Westlake Royal Zephyr Roll 11 in x 33 ft Universal Ridge Vent & Weather Block - image 1

Westlake Royal Zephyr Roll 11 in x 33 ft Universal Ridge Vent & Weather Block

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Westlake Royal Zephyr Roll 11 in x 33 ft Universal Ridge Vent & Weather Block


This is a Westlake Royal Zephyr Roll universal ridge vent and weather block, supplied as one 11 in wide by 33 ft long roll for tile roofing. It ventilates the ridge while blocking weather intrusion, and pairs with tile ridge and hip cap installation. One piece covers the roll.


Key Features:

  • Universal ridge venting: Zephyr Roll is a universal ridge vent and weather block designed for tile roof ridge applications.
  • Long 33 ft roll: The 11 in wide roll comes 33 ft long, covering a full ridge run with fewer seams.
  • Weather block barrier: Functions as a weather block, helping keep wind-driven rain and debris out of the ridge opening.
  • Code-listed product: Applicable standards include ES ESR-2015, CRRC approval and Energy Star approval.
  • Lightweight handling: Each 33 ft roll weighs about 6.05 lb, making it easy to carry up to the ridge.
  • Tile roof ready: Listed under tile roofing, it installs beneath tile ridge caps as part of a vented ridge assembly.

Specifications Table:

Specification Details
Brand Westlake Royal
Manufacturer model 90744
Sell unit 1 roll, 11 in x 33 ft
Product line Zephyr Roll
Profile / style Universal ridge vent & weather block
Dimensions 11 in wide x 33 ft long
Coverage per unit 33 linear ft of ridge per roll
Applicable standards ES ESR-2015; CRRC Approved; Energy Star Approved
Intended use Tile roof ridge ventilation and weather blocking
Weight 6.05 lb per roll

Coverage & How Much You Need:

One 33 ft roll covers approximately 33 linear ft of ridge. Measure the total ridge length to vent and order enough rolls, butting roll ends together along the ridge.

Fit and Compatibility:

Designed for tile roofing ridge assemblies, installed under ridge caps of the same roof system. Ridge caps, fasteners and closure pieces are sold separately; follow the roof tile manufacturer's installation instructions.


Frequently Asked Questions (FAQ):

Q: What is included in one order?
A: One piece: a single 11 in x 33 ft Zephyr Roll ridge vent and weather block roll.


Q: How much ridge will one roll cover?
A: Each roll covers up to 33 linear ft of ridge; measure your total ridge length and order accordingly.


Q: What roofs is it for?
A: It is listed for tile roofing and installs beneath ridge caps on tile roofs.


Q: Is it approved by any standards?
A: Yes, listed standards are ES ESR-2015, CRRC Approved and Energy Star Approved.


Q: How heavy is a roll?
A: One 33 ft roll weighs approximately 6.05 lb.


Expert Verdict — Reviewed by the SuperArbor Pro Desk

Size the vent by total ridge length and confirm the net free area requirement with the tile manufacturer's ventilation calculations. Install per ESR-2015 evaluation report details, keeping the roll centered over the ridge opening before setting ridge caps. For wider tile profiles, verify the 11 in width suits the cap span before ordering.

Work on ridge lines from stable staging with fall protection, and follow local code and the manufacturer's installation instructions.


Order the Westlake Royal Zephyr Roll 11 in x 33 ft ridge vent for your tile roof today.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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