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Ridge Ventilation SolutionsEnka®ExFlo

Importance of Ridge VentilationThe longevity and integrity of a residential or commercial structure is a result of proper use of construction methods and materials. Air circulation and ventilation is crucial to preventing moisture build-up, and mold or mildew growth. Excess heat and moisture build up can create costly problems for home & building owners.

Enka® ExFlo vents provide airflow which reduces heat gain and dries out moisture in the attic space.

The openness of Enka ExFlo assures proper exhaust ventilation and achieves the appropriate NFA (Net Free Area)

needed for good air circulation.

Enka Exflo cools the attic space in warm seasons, giving energy savings and maintains constant airflow to promote drying of condensed moisture in the attic during winter months.

Product DescriptionThe Enka® ExFlo composite design is ideal for ridge ventilation applications for asphalt shingle and wood shake or shingle roofs of different pitches. The low profile configuration provides an enhanced sturdier and seamless roof line (conceals under shingles). Our product range can be also customized to meet special requirements or building codes upon special request.

Application Ridge exhaust ventilation. Use under:• Architectural Shingles• 3-Tab Roof Shingles• Wood Shakes or Shingles

Features & Benefits• Provide constant airflow which

prevent moisture, mold and mildew in the attic space

• Extend longevity and integrity of the roof

• Concealed under ridge cap shingles• Compatible with standard

shingle sizes• Versions for nail gun or hand

nail installation

Low & Bonar Enka® and Colback® technologies have led the construction industry in ventilation applications in the entire building envelope. The core and its composite design contribute to key requirements for attic ventilation applications. Each product design has a very open structure and is lightweight, which provides superior ventilation performance while preventing moisture penetration from wind-driven rain or blowing snow.

Enka®ExFlo Ridge Ventilation Solutions

• Lightweight and easy to handle.

• Easy to cut for a quick installation• Coil or Bagged Nails with each roll• Filter fabric squares included (end

cap closure)• Limited Lifetime Warranty

Roofunderlayment

Enka®InFlo(tapered)

Air flowthroughopening

Ice & watermembrane

Roof deck

Shingles

1” continuous slot

Cap shingles

Enka®ExFloRollable Ridge Ventilation

Roof deck

Roof joist or truss

Ridge vent

Cool air intake

Warm air exhauststhrough vent

Attic installation

Ridge ventilationBuild-up

Low & Bonar is a manufacturer for private label ridge and intake ventilation products. Custom technical properties & unique design characteristics can be developed to meet any market requirements.

Physical Properties

Type Core Color

Nominal CompositeThickness

Nominal CompositeWidth

Fabric Attachments

Enka® ExFlo A-3/4” Black 3/4” 10.5” None

Enka® ExFlo B-3/4” Black 3/4” 10.5” Top & Bottom

Enka® ExFlo C-1” Black 1” 10.5” Top & Bottom

Technical Properties

Type Calculated NFA (si/lf)

Air Infiltration @ 1.57 psf(ft^3/min/Lin Ft)

Water Infiltration (Modified TAS 100)

Enka® ExFlo A-3/4” 19.45 19.45 Passed @ 70 mph

Enka® ExFlo B-3/4” 17.30 17.30 Passed @ 110 mph

Enka® ExFlo C-1” 20.52 20.52 Passed @ 110 mph

Nailing Requirements

Type Nail type Nail size Nailing method

Enka® ExFlo A-3/4” Coil Nails HDG 1.75” Nail Gun or Hand Nail

Enka® ExFlo B-3/4” Coil Nails HDG 1.75” Nail Gun or Hand Nail

Enka® ExFlo C-1” Bagged Nails HDG 2.5” Hand Nail

Product Installation

1. At the ridge line of the roof, chalk a parallel line 1 ½” on each side for cutting a slot in the roof sheathing 3” wide. Set the circular saw cut depth so no roof trusses or structural members are cut. The slot should stop 18” from the gable at each end.

2. The Enka ExFlo vent should be cut to end 18” from each gable end. The cap shingles should be lapped down from the top of the Enka ExFlow to the ridge line & extending to the gable end of the roof. An alternate installation is to cut the Enka Exflo to end about 1” from each gable end. In this installation

method the enclosed square of Colback fabric should be wrapped around the end of the Enka ExFlo to protect from insect & rain infiltration. Cap shingles should be nailed along the nail line printed on top of the Enka ExFlo.

3. Enka ExFlow should be centered on the slot cut in the roof sheathing so that the side with the nail lines is up. Enka ExFlo can be held in place with 2 roofing nails (included) at the starting end. Then make sure the product is pulled tight to remove any slack or humps in the Enka ExFlo then attach at the other end. Cap shingles should be

centered over the Enka ExFlo & will overhang each side. Use the nail line to guide where cap shingles are nailed. Nail gun pressure should be set at 90-100 psi. Nails should imbed a minimum of 3.4” into sheathing or penetrate through the sheathing. For the alternate installation the ridge cap shingles should overhang the fabric protected end of the Enka ExFlo by 1”.

4. For butt end splices of the Enka ExFlo with fabrics remove 3” of the 3D mat core & bottom fabric to create a top overlap flap. For Enka ExFlo with no fabric just butt ends together.ail gun or handnail installation.

What to expect from Enka®Exflo

• Superior ventilation while preventing wind driven rain intrusion

• Reduces moisture issues and heat gain in the attic space

• Supports longevity and integrity of the construction

• Solution for both new and renovation projects

Enka® ExFlo B3/4”

Comp.3D Mat Entangled

PET Mesh

Coconut Fibers

% Thickness Loss from 0 psf to 500 psfCompression Performance

0

5

10

15

20

25

30

35

Enka® ExFlo A3/4”

Enka® ExFlo B3/4”

Enka® ExFlo C1”

Comp.3D Mat Entangled

PET Mesh

Coconut Fibers

Measured at 1.57 psf (ft^3/min/Lin Ft)Air Infiltration

0

5

10

15

20

25

Enka® ExFlo C1”

Comp.3D Mat Entangled

PET Mesh

Coconut Fibers

CorregulatedSheet

Calculated NFA (si/lf)Net Free Area

0

10

20

40

60

80

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Low & Bonar production facilities and sales offices are located in Europe, the USA and China.

The Quality Management Systems of Low & Bonar facilities have been approved to the ISO 9001 Quality Management System Standard. Certificates are available on request.

Contact us for a free sample kit or to discuss your specific requirements

Superior Building Performance for Better BuildingsWhether a multi-story high rise, an institutional or commercial office building or a family home, Low & Bonar Building products make any building a better, healthier place to be.

Low & Bonar Building products serve the building and construction industry and specialize in innovative solutions for carriers, reinforcement, drainage,ventilation and acoustics.

Low & Bonar bvPO Box 9600, 6800 TC ArnhemThe NetherlandsT +31 85 744 1300F +31 85 744 1310

Low & Bonar Inc.PO Box 1057 Enka, NC 28728USAT +1 800 365 7391F +1 828 665 3737

Low & Bonar (Shanghai) Trading Co., Ltd.Unit 1587 / 15F L’Avenue Shanghai99 Xianxia Road Changning DistrictShanghai, 200051 – ChinaT +86 21 6057 7287 F +86 21 6057 7587

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Disclaimer

All information and product specifications provided in this document are accurate at the time of publication. As the Low & Bonar Group follows a policy of continuous development,

the provided information and product specifications may change at any time without notice and must not be relied upon unless expressly confirmed by

a relevant member of the Low & Bonar Group upon request. No liability is undertaken for results obtained by usage of the products and information.

© 2019 Low & Bonar. Colback is a registered trademark of Low & Bonar.

www.enkasolutions.com | info@enkasolutions.com