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Ventura GountyGultural Heritage Board

Agenda

Monday, September I 4,2015 Public Meeting

ROLL CALLPatricia Havens, Ricki Mikkelsen, John Kulwiec, Don Shorts, Gary Blum, Stephen Schafer, MiguelFernandez

ORAL COMMUNICATIONThis time is set aside for public comment on items not otherwise on this agenda which are within thepurview of the Cultural Heritage Board. Each speaker is allowed a maximum of five minutes. Boardmembers may question the speaker but there will be no debate or decision. Staff may refer the matterfor investigation and/or a future report.

APPROVAL OF MINUTESNone

GONVENE THE MEETING OF THE VENTURA COUNTY CULTURAL HERITAGE BOARD4a) California Preservation Foundation Webinar: Modernism on the Brink 12 NOON -1:30 PM

4b) Timber School Presentation by William Maple

4c) Landmark No. 155 (Briggs School) located at 14438 West Telegraph Road, in the unincorporatedarea of Ventura County.Action: Consider a request for a Certificate of Appropriateness for the removal of 96 original windows

and replacement with 96 new multi-lite dual-glazed fiberglass clad windows and refurbishment of all

front façade windows to their original condition.

DrscussroNa. Board Member Reportsb. Update from Staff.

6. MEETING ADJOURNMENT

ln Compliance w1h the Americans w1h Disabilities Act, if you need special assistance to participate in this meeting, please contactNicole Doner at 805-654-5042. Reasonable advance notification of the need for accommodation prior to the meeting (48 hours

advance notice is preferable) will enable us to make reasonable anangements to ensure accessibility to this meeting.

5.

Notice is hereby given that on Monday, September 14,2015 at 12:00 noon, Ventura CountyCultural Heritage Board will convene for a Public Meeting at the Ventura County GovernmentCenter, Administration Building, Second Floor, Atlantic Conference Room, located at 800 S.

Victoria Avenue, Ventura, CA. Members of the public are welcome to attend.

Staff Report and Recommendations

Agenda of September 1 4,2015, Item 4bCounty of Vennrra . Resource Management Agency' pl¿¡ning Division8Ø S. Victoria Avenue, Ventur4 CA 93009-1740' (805) 654-2478'ventura.org/rma/planning

SUBJEGT:

Request approval of a Certificate of Appropriateness (COA) for the removal of 96original windows and replacement with new 96 multi-lite dual-glazed fiberglass-cladwindows and refurbishment of all front façade windows to their original condition atLandmark No. 155, Briggs Elementary School located at 14438 W. Telegraph Rd,unincorporated area of Ventura County. Project No.CH15-0007

APPLICANT OWNER:

Alan CameranoDC Architects820 N. Mountain Avenue, Ste. 200Upland, CA 91786

Deborah Cuevas, District SuperintendentBriggs School District12465 Foothill RoadSanta Paula, CA 93060

REQUEST:

On behalf of the property owner, the applicant requests a COA to remove 96 originalwindows and replace them with 96 new multi-lite dual-glazed fiberglass-clad windowsand refurbish all front façade windows to their original condition at Ventura CountyHistorical Landmark No. 155.

LOCATION:

14438 W. Telegraph Rd, unincorporated area of Ventura CountyAPN: 098-0-010-015

I. CULTURAL HERITAGE BACKGROUND:

A. Historical Backoround

On March 15, 1994, the Ventura County Board of Supervisors approved the designationof Briggs Elementary School as Ventura County Historical Landmark No. 155.

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Staff Report and RecommendationsCultural Heritage Board Meeting of September 14 2015

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At that time, San Buenaventura Research Associates (SBRA) prepared California StateOffice of Historic Preservation DPR 523 Forms A and B (DPRs) that describe thehistory, historic assoc¡ation and the architecture of the Briggs Elementary Schoolproperty located at 14438 W. Telegraph Road (attached as Exhibit 1 and incorporatedherein by reference). The property's existing elementary school is estimated to havebeen built around 1924-5 and is described in the DPRs as follows:

Briggs Schoo/ District, formed in 1869, is one of the earliest drsfricfs in VenturaCounty, and is named after George G. Briggs who settled in the area in 1862,purchasing 15,000 acres of Rancho Santa Paula y Saticoy from T.W. More.Briggs eventually subdivided the rancho in 1867 into 150 acre parcels, openingthe land to farming. One of those farmers, Abner Haines, donated one acre ofland for the present Briggs School. C/asses were held in other nearby locationsuntil 1881 when a small school building was moved to the presenf sife. ln 1900,a new building was constructed on fhe sife. By the 1920s, with the steady growthof agriculture and especially the economic success of the nearby LimoneiraCompany, it was decided to build a larger school in 1925.

The school building is constructed in an "E" plan with a small addition to theauditorium. The low-pitched gable roofs are covered with Spanrsh f/es. Thefront façade is symmetrically arranged with a central two-story section flanked bya one story portion. The entrance contains a pediment, and on either side of thetall arched entry are engaged pilasters. Above the double front door is a multi-paned segmental arched window with curued moulding. Within the pediment is aquatrefoil vent. The tall narrow multi-paned wood casement windows are slightlyrecessed and evenly distributed with seven windows on each side of the entry.Similar windows are found on the srdes of the school building.

The style is Mediterranean with ltalian influence seen in the more formalclassrba/details.

B. Alterations

The school building has retained a high level of integrity and appears in good condition.All of the exterior windows are original from the 1925 construction except for the 1951kitchen addition which contains steel-framed windows with the top portion as an awningwindow and bottom as a fixed window. ln 1951 , Roy C. Wilson completed rehabilitationwork that consisted of replacement of interior doors with self-closing solid core doors,adding a platform smoke vent to the main roof, removing cast stone ornamentation onthe top parapet of the front façade, adding acoustic texture to the school's interiorceilings, and providing a new gas service. Two modern rectangular flat-roofed buildings'were constructed in 1951 and 1958 that added six classrooms.

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The manual training building (1910) that was moved to the site in 1922 remains at therear of the property along Briggs Road. The Quonset hut that was moved on-site postWWll has been removed. The board and batten cottage and the garage (circa 1908)that were moved on-site in 1923 have been relocated to the southwest corner of theproperty.

Photographs of Briggs School:

Photo 1 -Front facade looking west of 14438 W. Telegraph Rd., Santa Paula (2015)

Photo 2 -- Aerial Photo of the West Elevation (2015)

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Photo 3 - Front façade looking west (Google Earth 2015)

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Photo 4- Front façade looking west (Briggs School District - 1924-5)

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Photo No. 5 - 14438 W. Telegraph Rd -Aerial Photo of the South Elevation (2015)

II. PROJECT DESCRIPTION & CHO ANALYSIS:

A. Proiect Description

The applicant proposes to replace windows throughout the building except for thosewindows on the front façade facing Telegraph Road that will be refurbished utilizing theoriginal historic windows. Windows on the other facades will be replaced using dual-glazed fiberglass clad units that replicate the appearance of the original fenestration. Alloriginal windows, except for the existing steel-framed windows, are slightly recessedinto their openings. The proposed replacement windows would also be recessed.Specifically, the following alterations are proposed:

Refurbished Window Quantitv. Tvpe. and Plan Location (See Exhibit 2a)

o 12 Multi-lite double casement windows with multi-lite tilt & turn awning transomwindows ("A")

o 2 Multi-lite double casement windows ("8")o 1 Multi-lite transom panel above door ("C")o 1 Arched multi-lite double casement window ("D")

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Staff Report and RecommendationsCultural Heritage Board Meeting of September 14 2O15

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o 30 Multi-lite double casement windows with multi-lite tilt and turn transoms ("E"). 6 Multi-lite double casement windows ("G'). 8 Multi-lite double hung windows ("H")o 11 Multi-lite double hung windows (var¡ous sizes - "J')o 5 Multi-lite single casement windows ("K"). 25 Multi-lite tilt and turn (awning) transom windows ("L")o 2 Multi-lite fixed windows ("M")o 2 Multi-lite fixed transom windows above double doors ("N")o 7 Steelframed windows at kitchen wing with top awning window and bottom fixed

window to be replaced with multi-lite awning type windows with fixed bottompanels (See photos - Exhibit 3)

B. Proiect impact on the histo ric resource. oursuant to CHO.

ln evaluating requests for Certificates of Appropriateness, the Cultural Heritage Boardand staff shall consider the existing architectural style, design, arrangement, texture,materials, and any other factors with regard to the site's original distinguishingcharacteristics [and] shall approve a Certificate of Appropriateness, for anyproposed work site if, and only if, one of the following findings [in Cultural HeritageOrdinance Section 1366-3(a)through (e)l can be made....u (CHO S 1366-3) Tothisend, there are several well-established and applicable criteria or guidance fordetermining whether a particular treatment, development or building project will have asignificant adverse impact on an historic resource.

Siqnificance of the New Construction and Review of The Secretarv of thelnterior's Standards for Rehabilitation & lllustrated Guidelines forRehabilitatinq Historic Buildinqs, ("the Standards")

As required by the Cultural Heritage Ordinance, the Standards have been used toreview this project and the Board's review must be based on consistency of the projectwith them. Standards Nos. 1, 2, 5, 6, and 9 apply to this case in particular. Next toeach Standard is a corresponding RMA Planning staff comment.

Standards No. 1 : A property shall be used for its historic purpose or be used for apurpose that requires minimal change to the defining characteristics of the buildingand its site and environment;

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Discussion: The use of the property will not change

Standards No. 2: The historic character of a property shall be retained andpreserued. The removal of historic materials or alteration of features and spaces fhafcharacterize a property shall be avoided;

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Standards No. 5 - Distinctive features, finishes, and construction techniques orexamples of craftsmanship that characterize a property will be preserved.

Discussion: The Secretary's Standards encourage the retention of historic featuresthat contribute to the interpretation of the significance of a historic property. Thecirca 1925 windows consist of multi-paned wood casement, wood double-hung, andwood fixed windows with multi-paned transoms. All original windows, except for thesteel framed windows, are slightly recessed into their openings. The proposedreplacement windows would match the historic window unit placement (recessed)and would match the historic window's general appearance, method of operation,profile and dimensions. The major differences between the proposed and theexisting windows are that the replacement windows have simulated divided litepanes unlike the historic windows' true divided light panes and the replacementwindows' exterior materials would not match the historic windows.

The existing windows are in need of repair and maintenance. After consulting withthe applicant, staff believes that not all of the windows are to the point wherereplacement is necessary nor would the window repair cost exceed the replacement.As indicated by the applicant's analysis of the windows' condition (COA application -Exhibit 4), the primary reasons to replace them are to make the building moreenergy efficient, to weatherize the structure, and to reduce traffic noise fromTelegraph Road. Staff recognizes these objectives are very important to theteaching environment. Based on the above considerations, staff believes that theStandards would be met.

Standard 6.' Deteriorated architectural features shall be repaired rather thanreplaced wherever feasible. ln the event replacement is necessary, the new materialshould match the material being replaced in composition, design, texture and othervisual qualities. Repair or replacement of missing architectural features should bebased on accurate duplications of features, substantiated by historic, physical orpictorial evidence rather than on conjectural designs or the availability of differentarchitectural elements from other structures or objects.

Discussion: lf the windows are deteriorated beyond repair, the Secretary'sStandards encourage the replacement window to match the original in its design,materials, texture and other visual qualities. According to the NPS TechnicalPreseruation Seruices: Planning Successful Rehabilitation Projects - ReplacementWindows that Meet the Standardsl (Exhibit 5), replacement windows should matchthe historic windows' using the same material, however, a substitute material may beconsidered in secondary locations if the appearance of the window components willmatch those of the original in dimension, profile and finish.

1 "Planning Successful Rehabilitation Projects - Replacement Windows that Meet the Standards,",Technical Preservation Services, National Park Service, U.S. Department of the lnterior, Washington,D.C.,

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The proposed replacement windows will match the profile and dimensions of thehistoric windows' rails, stiles, and muntins and will match the historic windows'method of operation. The proposed replacement windows will provide energyefficiency, will result in reduced traffic noise with the dual-glazing, and will match theoriginal windows in appearance. The historic windows along the front façade facingTelegraph Road will be repaired and restored to working order. The windows on theother facades that are proposed to be replaced, are those that are not readily visiblefrom Telegraph Road. Based on the above considerations, staff believes that theStandards would be met.

Standards No. 9 - New additions, exterior alterations, or related new use compatiblematerials and construction techniques, will not destroy historic materials, features,and spatial relationships that characterize the property. The new work shall bedifferentiated from the old and will be compatible with the historic materials, features,size, scale and proportion, and massing to protect the integrity of the property and itsenvironment

Discussion: Staff believes the proposed replacement windows would match thehistoric windows' general appearance, method of operation, window unit placement,design, and composition. The proposed replacement windows would be located onnon-primary elevations and the appearance of their components would match thoseof the original in dimension and profile. Based on the above considerations, staffbelieves that the Standards would be met.

2. Public Resources Code S 21084.1 and CEQA Guidelines S 15064.5(b):

CEQA statutory and regulatory provisions help guide the CHB in determining whether aproject, treatment or other development activity may cause a significant adverse changein the significance of an historical resource.

The proposed project is considered to have a significant historical resources impact if itwill cause a substantial adverse change of a historic resource as defined in Section15064.5 (bX1) of the CEQA Guidelines. A "substantial adverse change" is the physicaldemolition, destruction, relocation or alteration of the historical resource or its immediatesurroundings such that the significance of an historical resource would be materiallyimpaired. Material impairment means altering in an adverse manner those physicalcharacteristics of an historical resource that convey its historical significance and itsinclusion in a local register or its identification in an historical resources survey meetingthe requirements of Section 5024.1(g) of the Public Resources Code, unless the publicagency reviewing the effects of the project establishes by a preponderance of evidencethat the resource is not historically or culturally significant.

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There are several well-established and applicable criteria or guidance for determiningwhether a particular treatment, development or building project will have a CEQAsignificant adverse impact on an historic resource. See 14 Cal. Code of Regs., $15064.5(bX3) wh¡ch states that "...a project that follows the Secretary of the lnterior'sStandards for the Treatment of Historic Properties with Guidelines for Preserving,Re.habilitating, Restoring, and Reconstructing Historic Buildings (Secretary of Interior'sStandards) or the Secretary of the Interior's Standards for Rehabilitation and Guidelinesfor Rehabilitating Historic Buildings (1995), Weeks and Grimmer, shall be considered asmitigated to a level of less than a significant impact on the historical resource."

Staff believes that the proposed project would not adversely affect the existing setting,environment, or the integrity that characterize the existing Landmark No. 155.

3. Opportunitv to Show Hardshio

At the CHB public hearing on this matter, if desired, the property owner must be giventhe opportunity to present facts and evidence demonstrating that a failure to grant therequested Certificate of Appropriateness will cause an economic hardship as providedby CHO Section 1366-3(d).

4. Planninq Staff Conclusions Reqardino Proiect lmpacts to HistoricResources on This Site

It is recognized that in some cases repair will not be feasible because the windows aredamaged, deteriorated, or missing, or because the cost of repair significantly exceedsthat of replacement. Staff finds, after consulting with the applicant, that although thewindows are in need of repair (some more repair than others), they are not to the pointwhere replacement is necessary nor would the repair cost exceed the replacement. Theprimary reasons to replace them are to make the building more energy efficient, toweatherize the structure, and to reduce traffic noise from Telegraph Road.

Staff believes that the proposed project would not adversely affect the existing setting,environment, or the integrity that characterize the existing Landmark No. 155. Staff'srecommendation is for approval of the COA request. The CHB may disagree withstaff's recommendation and consider the project to have an adverse effect on LandmarkNo. 155. lf so, the effect may be reduced or eliminated by pursuing an alternativecourse of action or through mitigation. This can be accomplished through redesign ofthe project to eliminate objectionable or damaging aspects of the project. lf the CHBdecides to request a redesign of the project, the following improvements would increasethe energy efficiency of the existing historic windows:

o Passlve improvemenfs-such as adding interior blinds;. Window repair so/ufions-removing excessive layers of paint, replacing loose

window putty, and ensuring each window fits tightly in the jamb;

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Adding interior storm windows-adding interior storm windows (when they canbe added into the wall depth without furring out interior walls) is another viableoption; andAdding window films to historic A/ass-applying high-quality films can be aneffective means of reducing solar heat gain while still retaining the historic clearappearance of the glass.

PROPOSED CULTURAL HER¡TAGE ORDINANCE FINDINGS FOR APPROVAL

After consideration of the proposed project, staff report and accompanying exhibits, andall public testimony, the Cultural Heritage Board may approve or deny the issuance of aCertificate of Appropriateness.

The requested COA may be approved on the basis of either one of the followingfindings:

1) "The proposed work will neither adversely affect the significant architecturalfeatures nor adversely affect the character of historical, architectural or aestheticinterest or value of the Cultural Heritage site." ICHO S 1366-3(a))

OR

2) .ln the case of construction of a new improvement, addition, building or structureupon the site, the use and exterior of such construction will not adversely affect,and will be compatible with fhe use and, or exterior of the sife." (CHO 51366-3(b))

PROPOSED CULTURAL HERITAGE ORDINANCE FINDINGS FOR DISAPPROVAL:

Alternatively, the Cultural Heritage Board or staff may disapprove the issuance of saidCOA for any proposed work if, and only if, it makes one [or more] of the followingapplicable findings. (CHO S 1366-7, subdivisions (aþ(c)) ln this instance, the CHB may,if it so decides and finds, deny the subject request of a COA on either one or both of thefollowing findings:

(1) "The proposed project is to remove or demolish a designated Cultural Heritagesite that is determined by the Cultural Heritage Board to be significant andimportant to the history of the County." (CHO $ 1366-7(a))

OR

(2) "The proposed project would adversely affect the historical significance of thesite or would not be compatible with the use and/or exterior of the designatedCultural Heritage sife." (CHO 51366-7(b))

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Staff Report and RecommendationsCultural Heritage Board Meeting of Septembe¡ 14 2015

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PUBLIC COMMENTS

No comments have been received to date

RECOMMENDED ACTIONS:

1. CONDUCT the public hearing, RECEIVE oral and written testimony, andCONSIDER the County Planning staff report and all exhibits and attachments onthis project; and

2. FIND that the proposed window replacement and refurbishment project atLandmark No. 155 meets the requirements of the County Cultural HeritageOrdinance and the Secretary of lnterior's Standards based on the substantialevidence presented in the staff report and the entire record; and

3. Based on the preceding evidence and analysis, APPROVE a Certificate ofAppropriateness for the proposed window replacement and refurbishment projectat Landmark No. 155.

Prepared by: Reviewed by:

icole Doner, Case Planner Maier, Manager805-654-5042 Planning Programs Section

805-654-2464

Attachment:

Exhibit 1:

Exhibit 2a:Exhibit 2b:Exhibit 2c:Exhibit 3Exhibit 4:Exhibit 5:

C:

California State Office of Historic Preservation DPR 523 A & B FormsProposed Elevation PlanProposed Site PlanProposed Floor PlanColor Photos of Windows ("4 -L")COA applicationNPS Technical Preservation Services: Planning Successful Rehabilitation Projects- Replacement Windows that Meet the Standards

Deborah Cuevas, Briggs School District SuperintendentRod Leard, California Construction Management, lnc. project managerAlan Camerano, Applicant

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Certificate of APPropriateness ApplicationCounty of Ventrrra' Resource Managemeut Agency800 S. VictoriaAvenue, Ventura, CA 93009-1740'(805) 654-2478'

. Planning Divisionve n tu ra. org/rm a /pI a n n Í n g

Sections 1g64-12 and 1366 of Ventura County Ordinance No. 4225, require submission and

approval of a Certificate of Review or a Certificate of Appropriateness application by the Cultural

Heritage Board (CHB) prior to commencement of or receipt of necessary permits for

maintenance, alterations, restoration rehabilitation, remodeling, addition, change of use,

demolition, subdivision, or relocation of a designated or potentially eligible Cultural Heritage

Site. This includes: additions, walls, fences, light fixtures, sidewalks, steps, solar collectors, roof

changes, parking lots, trees or other associated features on the exterior of a property.

ptease note that the issuance of the certificate of Appropriateness (COA) or the Certificate of

Review (COR) is not a permit to construct, remodel, or demolish. Rather, the COA/COR is an

authorization issued by the CHB (or support staff) in accordance with criteria adopted by the

CHB. This criteria indicate that those actions listed above will not adversely affect the

designated Cultural Heritage Site's values or unduly compromise the eligibility of a potential site

to become a designated Cultural Heritage Site. After approval of the COA/COR, the applicant is

responsible for obtaining all required building or planning permits from the appropriate

jurisdiction.

. " Please Print ar Type

Briggs School DlstrlctName:Na

12465 FoothillRd.12465 FoothillRd.Address:

CitytZip:CitylZip

Phone: 805-525-7540Phone: 805-525-7540

riggsesd.org.orgEmail:Email:

A. Applicant/Contact Person B. Property Owner (lf multiple owners,attach additional sheets as necessary)

County Landmark No. 1551443S W. Telegraph RoadSanta Paula, CA 93060

Historic Designation and NoProperty Address:

D. Landmark/DistricUPoint of lnteresUSiteof Merit and Historic Resources Survey (ifapplicable)

C. Site lnformation

Exhibit 4

33

State NationalLocalCommunity or CitY/ ZiP:

Santa Paula, 93060

Date of Designation:

Maroh 1994()qa -o'tlo4lAssessor's ParcelNumber(s):

Name

Brlggs Schools

Name:

National Register Status Code:YesMills Aot No

E. Project Description/Proposecl lmprovements in Detail:

Refurbish and rePlace windows throughout the buildlng. Windows on the front facade faclng Telegraph

Rd. will be refurbished utillzlng the original wlndows to the oxtent possible. Windows on other facades wlll

replaced using high quallty double-glazed archltectural units that replicate the appearance of the

windows.

Exlstlng windows do not seal-out weather, iesulting in water damage to the lnterlor of the slructure. The

wlndows croate onlY a minimal barrler to ambient nolse' Trucks stopplng at the corner of Telegraph

Briggs Rd. are extremelY nolsy, creating an imPedlment to the teacfrlng and leamlng envlronment.

of the wlndows are deterlorated and most do not oPen or close properly. ln fact, many are so

to close that the school tYPicallYso the closed windows

never opens the windows, even during hot weather. There ls no

condltloning, create a very uncomfortable environment for teachers and

F. Reason for ProPosed Ghanges:

Filing COA (see next Page)Attach Checklist for

G. Submittal and Fee Requirelnents:

Date:

#Applicant:

qnt frorn Date:Owner cant)

H. Signature(s)

Certificate of Appropriateness Application

PageZof 4

JAN-2013

34

Planning Successful Rehabilitation Projects, Replacement Windows-Technical Preserva... Page 1 of 4

Technical Preservation Services tlÊüffillàrt s€wkrUS. DÐshilt of tie lDtsrioi B

Home > The Standards > Applyino the Rehab¡l¡tation Standards > Successful Rehab¡litat¡ons > Replacement Windows

Planning Successful Rehabilitation Projects

W¡ndows

Evaluatino Historic Windows for Reoair or Reolacement

Replacement Windows that Meet the Standards

Documentation Reouirements for Prooosed Window Replacement

Interior treatments

Changing Secondarv Interior Soaces in Historic Buildings

Subdividino Assemblv Soaces in Historic Buildings

New additions andrelated new construct¡on

New Add¡tions to H¡stor¡c Bu¡ld¡ngs

New Construct¡on w¡th¡n the Boundaries of H¡storic Properties

Modern requirements and new technologies and materials

Evaluatino Substitute Materials in Historic Buildinos

Replacement Windows that Meet the StandardsThe decision-making process for selecting replacement windows divides into two tracks depending on whether historic windows remain

in place or no histor¡c windows survive.

Replacement of Existing Historic WindowsWhen historic windows exist, they should be repaired when possible. When they are too deteriorated to repair, selection of the

replacement windows must be guided by Standard 6. Design, visual qualities, and materials are specific criteria provided by the

Standard that are pertinent to evaluating the match of a replacement window. Evaluating the adequacy of the match of the replacement

window involves the consideration of multiple issues.

How accurate does the match need to be?The more important a window is in defining the historic character of a building the more crltical it is to have a close match for its

replacement. Location is a key factor in two ways. It is usually a consideration in determining the relative importance of a building's

various parts. For example, the street-facing facade is likely to be more important than an obscured rear elevation. The more impoftant

the elevation, feature or space of which the window is a part, the more important the window is likely to be, and thus, the more critical

that its replacement be a very accurate match. Secondly, the location of the window can affect how much of the window's features and

Exhibit 5

http://www.nps.gov/tpsistandards lapplying-rehabilitation/successful-rehab/windows-repla... 091021201535

Planning Successful Rehabilitation Projects, Replacement Windows-Technical Preserva... Page2 of 4

details are visible. This will affect the nature of an acceptable replacement. For example, windows at or near ground level present a

different case from windows ¡n the upper stories of a tall building.

Using the hierarchy of a building's features and taking into account the window's visibility, some general guidance can be drawn.

. Replacement wlndows on primary, street-facing or any highly visible elevations of buildings of three stories or less must match the

historic wlndows in all their details and in material (wood for wood and metal for metal).

. Replacement wlndows on the primary, street-facing or any highly visible elevations that are part of the base of high-rise buildings

must match the historic windows in all thelr deta¡ls and in material (wood for wood and metal for metal). The base may vary in the

number of stories, but is generally deflned by massing or architectural detailing.

. Replacement windows on the primary, street-facing or highly visible elevations of tall buildings above a distinct base must match the

hlstoric wlndows ¡n size, design and all details that can be perceived from ground level. Substitute materials can be considered to the

extent that they do not compromise other important vlsual qualities'

. Replacement windows on secondary elevations that have limited visibility must match the historic windows in size, configuration and

general characteristics, though finer details may not need to be dupllcated and substitute materlals may be considered

. Replacement windows whose interior components are a significant paÉ of the interior historic finishes must have interior profiles and

finishes that are compatible w¡th the surrounding historic materials. However, in most cases, the match of the exterior of a

replacement window will take precedence over the interior appearance.

. Replacement windows in buildings or parts of buildings that do not fit into any of the above categories must generally match the

historic windows in all their details and in material (wood for wood and metal for metal). Variations in the details and the use of

substitute materials can be considered in individual cases where these differences result in only minimal change to the appearance of

the window and in no change to the historic character of the overall building.

How well does the new w¡ndow need to match the old?The evaluation of the match of a replacement window depends primarily on its visual qualities. Dimenslons, profiles, finish, and

placement are all perceived in relative terms. For example, an eighth of an inch variation in the size of an element that measures a few

inches across may be imperceptible, yet it could be more noticeable on the appearance of an element that is only half an inch in size.

The depth of a muntin or the relative complexity of a brick mold profile are more often made visually apparent through the shadows

they create. Thus, while comparable drawings are the typical basis for evaluating a replacement window, a three-dimensional sample or

mock-up provides the most definitive test of an effective visual match'

The way a historic window operates is an important factor in ¡ts design and appearance. A replacement window, however, need not

operate in the same manner as the historic window or need not operate at all as long as the change ¡n operation does not change the

form and appearance of the window to the point that it does not match the historic window or otherwise impair the appearance and

character of the building.

Factors to consider in evaluating the match of a rePlacement w¡ndowo Window unit placement in retation to the wall plane; the degree to which the window is recessed into the wall. The location of

the window affects the three-dimensional appearance of the wall.

. Window frame size and shape. For example, w¡th a wood window, this would include the brick mold, blind stop, and sill.

. The speclfic profile of the brick mold is usually less critical than its overall complex¡ty and general shape, such as stepped or

curved.

. Typical sight lines reduce the importance of the size and profile of the sill on windows high above ground level, especially when the

windows are deeply set in the wall.

. Though a blind stop is a small element of the overall window assembly, it is a noticeable part of the frame profile and it is an

important part of the transition between wall and glass.

. Steel windows that were installed as a building's walls were constructed have so little of their outer frame exposed that any

replacement window will necessitate some addition to this dimension, but it must be minimal'

http://www.nps.gov/þs/standards lapplying-rehabilitation/successful-rehab/windows-repla... 091021201536


. Gtass size and divisions. Muntins reproduced as simulated divided lights - consisting of a three-dimensional exter¡or grid, between-

the-glass spacers, and an interiorgrid - may provide an adequate match when the dimensions and profile of the exteriorgrid are

equivalent to the historic muntin and the grid is permanently affixed tight to the glass.

. Sash elements width and depth. For example with a wood window, this would include the rails, stiles and muntins; with a steel

window, this would include the operator frame and muntins.

. The depth of the sash in a dou ble-hu ng window, or its th ickness, affects the depth of the offset at the meeting rail of a hu ng

window. This depth is perceived through the shadow that it creates.

. Because of its small size, even slight differences in the dimension of a muntin will have a noticeable effect on the overall character

of a window. Shape, as well as depth, is impoÉant to the visual effect of a muntin.

. The stiles of double-hung historic windows align vertically and are the same width at the upper and lower sashes. The use of

single-hung windows as replacements may alterthis relationship with varying effects on the appearance of a window. In particular,

when the distinction between the frame and the sash is blurred, details such as lugs may be impossible to accurately reproduce.

. Meeting rails of historic windows were sometimes too narrow to be structurally sound. Reproducing a structurally-inadequate

condition is not required.

. The operating sash of a steel window is usually widerthan the overall muntin grid of the window. In addition, the frame of the

operating sash often has slight projections or overlaps that vary from the profile of the surrounding munt¡ns. The shadow lines the

munt¡ns create add another important layerto the three-dimensional appearance of the window.

. While it may be theoretically possible to match all the significant characteristics of a historic window in a substitute material, in

actuality, finish, profiles, dimensions and details are all affected by a change in material.

. In addition to the surface characteristics, vinyl-clad or enameled aluminum-clad windows may have jo¡nts in the cladding that can

make them look very different from a painted wood window.

o Secondary window elements that do not match the finish or color of the window can also diminish the match. Examples include

white vinyl tracks on dark-painted wood windows or wide, black, glazing gaskets on white aluminum windows.

. Glass characteristics.

. Insulated glass is generally acceptable for new windows as long as it does not compromise other important aspects of the match.

. The clarity and reflectivity of standard clear window glass are significant characteristics of most windows. Because these

characteristics are often diminished for old glass, new glass equivalent to the original should be the basis for evaluating the glazing

proposed for new windows. Color should only be a noticeable characteristic of the new glass where it was historically, and any

coating added must not perceptibly increase the reflectivity of the glass'

. Where the glazing is predominantly obscure glass, it may be replaced with clear glass, but some ev¡dence of the historic glazing

must be retained, either in parts of windows or in selected window units.

Replacement Windows Where No Historic Windows RemainReplacement windows for missing or non-historic windows must be compatible with the historic appearance and character of the

building. Although replacement windows may be based on physical or pictorial documentation, if available, recreation of the missing

historic windows is not required to meet the Standards. Replacement of missing or non-historic windows must, however, always fìll the

original window openings and must be compatible with the overall historic character of the building. The general type of window -industrial steel, wood double-hung, etc. - that is appropriate can usually be determined from the proportions of the openings, and the

period and historic function of the building. The appearance of the replacement windows must be cons¡stent with the general

characteristics of a h¡storic window of the type and period, but need not replicate the missing historic window. In many cases, this may

be accomplished using substitute materials. There may be some additional flexibility with regard to the details of windows on secondary

http://www.nps.gov/tps/standards lapplying-rehabilitation/successful-rehab/windows-repla... 091021201537


elevations that are not hlghly vislble, consistent with the approach outlined for replacing existing historic windows. Replacing existing

incompatlble, non-hlstoric windows with similarly lncompatible new windows does not meet the Standards.

Ç nns.eov cxPERtExcE voun lil¡nlcr"

http://www.nps.gov/tps/standards lapplying-rehabilitation/successful-rehab/windows-repla.. . 091021201538

Ventura Gounty À3 Gultural Heritage Board -...

Documents

Transcript of Ventura Gounty À3 Gultural Heritage Board -...

Ventura Gounty À*3 Gultural Heritage Board -*...

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Ventura Gounty À3 Gultural Heritage Board -...

Transcript of Ventura Gounty À3 Gultural Heritage Board -...