ant coverings, such as shutters over windows and doors ... · your roof deck. This will help keep...
Transcript of ant coverings, such as shutters over windows and doors ... · your roof deck. This will help keep...
Rebuilding After the Storm“Seven Things You Need to Know Before Rebuilding Your Hurricane-Damaged Home”…Homeowners can now strengthen homes to “code-plus” standard.
6. Opening ProtectionYou can protect your home’s openings, such as windows and doors, from penetration by windborne debris by installing impact-resistant windows and doors or installing impact resist-ant coverings, such as shutters over windows and doors.
Impact resistant glass and shutters arespecifically designed to meet a combina-tion of impact and continuous pressurefrom the wind. Always use productsthat have been tested to one of thesestandards and have been designated assuch through a recognized productapproval system or evaluation report:SBCCI SSTD 12 ASTM E 1886 and ASTM E 1996 Miami-Dade Protocols PA 201, PA 202,and PA 203.
Equally important as the strength ofthe glass or shutter is the strength ofthe window’s frame and attachmenthardware. Opening protection devicesare tested as a unit that includes theglass, the frame, as well as the attach-ment hardware and the installationmethod. Impact resistant windowsand shutters should always beinstalled following the manufacturer’srecommendations.
7. DoorsExterior doors should also be wind and impact resistant or protected with an impact resistant covering.
Garage doors are particularly vulnera-ble to high winds, because of the longspan of opening they cover and therelatively lightweight material they aremade of. Two options are available forstrengthening garage doors.
Replace the door and track with a sys-tem that is designed to withstand highwinds and wind-borne debris. Thesecond option is to protect the garagedoor with a tested and approvedimpact resistant covering.
For more information…Construction information, builder/inspector courses and technical supportis available to homeowners, home-builders or inspectors at no chargefrom the Federal Alliance for SafeHomes – FLASH, Inc., a non-profit,501(c)3 education organization dedi-cated to strengthening homes andsafeguarding families from natural andmanmade disasters.
For more information on disaster-resistant, "code-plus building techniques visit www.flash.org, www.blueprintforsafety.org or call877.221.SAFE.
When repairing or rebuilding after a storm there are a numberof steps homeowners can take to strengthen their homes againstfuture disasters. Storms as recent as Hurricane Charleyunderscore the need for disaster-resistant homes thatexceed current building standards. The Federal Alliancefor Safe Homes offers “code-plus” construction tech-niques for new and existing homes that provide themaximum level of protection from wind, rainand windborne debris. Inside this SpecialEdition of Blueprint for Safety News arethe tips and techniques homeownersneed to strengthen their homesand safeguard their families.
A pub l i ca t ion o f The Federa l A l l iance for Sa fe Homes - FL ASH inc .
Special Edition®
Disaster Safety Through PartnershipAcademic Partners
Austin College Central U.S. Earthquake ConsortiumInternational Code CouncilTexas Tech Wind Science and Engineering
Research Center
National PartnersAmerican Red CrossAmerican Society of Home InspectorsCitigroupFEMAFirewiseInstitute for Business and Home SafetyNational Roofing Contractors AssociationNational Storm Shelter AssociationNational Weather ServiceNationwideState Farm Insurance CompaniesThe Home DepotThe Home Depot FoundationThe Salvation ArmySt. Paul TravelersUSAA
Regional PartnersApalachee Regional Planning CouncilRocky Mountain Insurance Information AssociationSouthwest Insurance Information ServiceTampa Bay Regional Planning Council
State PartnersAlabama Department of InsuranceArkansas Department of InsuranceBuilding Officials Association of FloridaCitizens Property Insurance CorporationDisaster Contractors NetworkFirst FloridianFlorida Department of Community AffairsFlorida Department of Financial ServicesFlorida Division of ForestryFlorida Emergency Preparedness AssociationFlorida Fire Chiefs AssociationFlorida Insurance CouncilFlorida SelectGeorgia Department of InsuranceGeorgia Emergency Management AgencyIndependent Insurance Agents of Texas Kentucky Division of Emergency ManagementKentucky Office of InsuranceKentucky Weather Preparedness CommitteeNew Jersey Office of Emergency ManagementNorth Carolina Department of InsuranceTexas Department of Public SafetyVirginia Bureau of InsuranceVirginia Department of Emergency ManagementVolunteer FloridaWest Virginia Insurance Commission
Community PartnersBrevard PreparesDuval PreparesHernando County Emergency Management Home Builders Association of Greater Dallas
Miami-Dade Emergency ManagementTulsa Partners
Leadership PartnersWalter A. Bell,
Alabama Insurance CommissionerJane L. Cline,
West Virginia Insurance CommissionerErnie Fletcher,
Kentucky GovernorTom Gallagher,
Florida Chief Financial OfficerAlfred W. Gross,
Virginia Insurance CommissionerJim Long,
North Carolina Commissioner of InsuranceGlen Jennings,
Executive Director Kentucky Office of InsuranceJohn W. Oxendine, Georgia Insurance &
Safety Fire CommissionerMike Pickens,
Arkansas Insurance Commissioner
Resource PartnersPGT IndustriesSimpson Strong-TieSmartVENT®
Ventilated AwningsWayne Dalton
together to form a ridge or a peak atthe top – each end looks like the let-ter A. Homes with gabled roofs aremore likely to suffer damage, such ascollapse of the end wall from highwinds because they are often notbraced properly during construction. If your home is built with a gabledend wall, use one of the followingconstruction techniques.
• Continuous Wall Constructionor Balloon Framing – Use full-height studs, concrete or solidmasonry walls from the floorbelow all the way up to the roof.Balloon-framed gable end wallsperform better in windstormsbecause they do not have thehinge that usually exists wherethe triangular part of the gable sitson top of the wall below. Homeswith high, cathedral-like ceilings,where there is no place to brace agabled end, should be balloonframed, or will require a specialdesign by a registered or licensed
engineer.
• Platform Framing – Brace theintersection of the gable and theend wall. This intersection is aparticularly weak point and thosethat are not properly braced cancollapse, causing major damage,allowing wind and wind-drivenrain into the home. In homeswith attics, an attic floor or ceiling
diaphragm with the prop-er bracing techniques can
be used to provide the lateral sup-port of the gable end wall if theend wall is NOT framed fullheight.
1. Roof Deck and AttachmentThe roof covering, and the deck beneath it, are your home’s firstline of defense and form a criti-cal shield of protection fromhigh winds and rain. The fol-lowing techniques should beused during roof installation onboth new and existing homes,and are best performed by alicensed, professional roofingcontractor.
• Install a roof deck of solid plywood– 5/8” thickness to maximizewind and windborne debris resist-ance with 10 penny common or 8penny ring shank nails spaced at4 inches along the panel edgesand every six inches in the field ofthe plywood panel. Make surethat the nails penetrate the deck-ing directly into the roof framing.
• Be sure to look in the attic to con-firm that the roof decking is prop-erly nailed to the roof framing. Ifyou can see nails along the sidesof rafters or trusses, where the nailpenetrates the decking, your roofdeck is probably not securelyattached.
2. Secondary Water BarrierEven though roof coverings are somewhat wind resistant, a secondary water barrier pro-vides protection if the covering is damaged or is blown off.
• Create a secondary water barrierby installing self-adhering flashingtape or modified polymer bitu-men strips on top of the joints inyour roof deck. This will helpkeep out the rain in the event theroof covering is damaged ordestroyed by severe weather.
• Install one layer of #30 underlay-ment – sometimes called feltpaper – over the roof decking andsecondary water barrier. The felthelps with drainage in the eventwater gets under the roof covering.
3. Roof Covering• Install a roof covering that has
been tested to the latest standardsfor wind and hail resistance.These standards are: ASTM D3161 enhanced or UL 2390 forwind resistance and UL 2218 forimpact resistance.
• Be sure to specify these standardsand look for labels on the prod-ucts confirming these standardsbecause ordinary roofing materialsmay not look any different fromthe wind resistant versions.
4. Roof Shape and Bracing Gabled EndsThe type and shape of the roof on your home can help deter-mine how well it will perform during a severe windstorm.
A hipped roof typically performs betterin windstorms than a gabled roofbecause of its aerodynamic propertiesand typical construction techniques.
A hipped roof is one that slopesupward from all sides of the building. Agabled roof has two slopes that come
Gabled Roof
HippedRoof
5. Roof to Wall ConnectionsYour home’s ability to resist the extreme force of wind is only asstrong as its weakest link, sothe only sure way to create awind-resistant home is tosecure all connections – roof-to-wall, floor-to-floor and wall-to-foundation.
The roof is your home’s first line ofdefense from a storm. To make surethe roof stays in place when severewinds blow, securely anchor the roof to the wall by installing hurricanestraps or clips at every wall-to-rafter (ortruss) connection to reinforce the roof.
These connections are critical inholding the roof together and willdramatically increase the home’soverall resistance to wind. Be sure toinstall all connectors following manu-facturer’s specifications.
Typical Roof-To-Wall and Wall-To-FoundationConnections
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3