Introducing the first 15# breathable synthetic underlayment

Introducing the first 15# breathable synthetic underlayment

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Sahara AnchorDeck
15# Breathable Synthetic Roof Underlayment

At Sentry, we live and breathe synthetic roofing underlayment. We manufacture and stand by our products. So, when we claim that Sahara™ AnchorDeck™ is the only breathable synthetic roofing underlayment with multiple layers of waterproofing protection, you can trust that it was produced with state-of-the-art equipment by experts who excel in creating exceptional waterproof products. Damaged roof illustration

Using Sahara™ AnchorDeck™ breathable underlayment allows for roof decks exposed to rain or snow during construction to dry after the primary roof has been installed. Breathability is vital in preventing mold, mildew, and potential structural damage. By specifying Sahara™ AnchorDeck™ breathable underlayment, you'll gain the competitive edge, giving your clients the confidence and security they demand to safeguard their valuable homes or buildings.
Sahara AnchorDeck’s textured, slip-resistant walking surface offers excellent steep-slope walkability, productivity, comfort, and increased safety for roofers. Sahara™ AnchorDeck™ is designed for use under various roof types, including asphalt shingles, concrete tiles, synthetic shingles, primed cedar shakes, and metal roof systems, such as stone-coated steel shingles, metal panels, and metal accents. Sahara™ AnchorDeck™ meets all the necessary code requirements, including ASTM D226, ASTM D4869, ASTM D8257 and AC 188, as mandated by ICC-ES.

Why you should use a breathable
synthetic roof underlayment

Why you should use a breathable
synthetic roof underlayment

Why you should use a breathable
synthetic roof underlayment

Sahara™ AnchorDeck™ is not just any underlayment - it's a game-changer. Our innovative product actively draws trapped moisture through the underlayment and releases it to the outside air. This means wet roof decks or damp attic spaces can finally breathe and become a drier, healthier roof system.
When moisture is trapped within the roof, it creates the perfect environment for black mold and fungal growth to thrive. Unseen from the outside, mold and moisture can weaken the structural integrity of the roof system, causing voids in the roof deck and ultimately leading to primary roof failure.

As a home seller, the presence of black mold in the attic space can be a major problem. Removal is expensive, poses a potential health hazard, and can significantly impact the value of your property.

Fortunately, using a breathable synthetic roof underlayment like Sahara™ AnchorDeck™ during new construction or re-roofing is a simple way to avoid these costly headaches in the future. With Sahara™ AnchorDeck™, you can breathe easy knowing your roof is protected from the inside out.

Ask for it at your nearest roofing distributor today.



Sahara™ AnchorDeck™ is the only synthetic underlayment that matches the breathability aspect of 15# felt! Installing Sahara™ AnchorDeck™ helps keep your projects dried-in during new construction or re-roofing, and assists in drawing moisture out of the attic space for the lifetime of the roofing system.

Multiple Layers of Waterproofing

Rest assured knowing Sahara™ AnchorDeck™ is the only breathable underlayment manufactured with multiple layers of waterproofing that provides unparalleled protection against moisture damage, while also allowing for the same crucial breathability aspect of 15# felt.

Steep Slope Confidence

Sahara™ AnchorDeck™ combines micro-etched slip resistance plus Nexgen surface grip technology for unmatched walkability you can trust, every time.

No more felt blow-offs!

Sahara™ AnchorDeck™ is up to 8 x stronger than felt! Sahara™ AnchorDeck™ stays secured to the deck in all weather conditions & minimizes tearing around fasteners.

Sahara™ AnchorDeck™ is the only synthetic underlayment that matches the breathability aspect of 15# felt! Installing Sahara™ AnchorDeck™ helps keep your projects dried-in during new construction or re-roofing, and assists in drawing moisture out of the attic space for the lifetime of the roofing system.

Multiple Layers of Waterproofing

Rest assured knowing Sahara™ AnchorDeck™ is the only breathable underlayment manufactured with multiple layers of waterproofing that provides unparalleled protection against moisture damage, while also allowing for the same crucial breathability aspect of 15# felt.

Steep Slope Confidence

Sahara™ AnchorDeck™ combines micro-etched slip resistance plus Nexgen surface grip technology for unmatched walkability you can trust, every time.

No more felt blow-offs!

Sahara™ AnchorDeck™ is up to 8 x stronger than felt! Sahara™ AnchorDeck™ stays secured to the deck in all weather conditions & minimizes tearing around fasteners.

Sahara AnchorDeck Features & Benefits


Sahara™ AnchorDeck™ Spec Sheet [PDF]  Sahara™ AnchorDeck™ Installation Instructions  Sahara™ AnchorDeck™ Warranty  Sahara™ AnchorDeck™ Safety Data Sheet [PDF]

Sahara AnchorDeck Technical Data

Test/Standard* Sahara AnchorDeckTypical Value
Tensile Strength ASTM D5034 MD 95 lbs (43 kg) | CD 85 lbs (38.5 kg)
Tear Strength ASTM D4533 MD 18 lbs (8.16 kg) | CD 16 lbs (7.26 kg)
Liquid Water Transmission ASTM D4869 Pass
Fire Rating ASTM E108 Class A
UV Exposure 3 Months
Temperature Range -40° F to 240° F

Sahara AnchorDeck Roll/Pallet Specs

Length per roll: 286’ / 87 m
Width per roll: 42” / 1.1 m
Weight per roll: 23 lbs / 10.4 kg
Roll size: 10 sq / 93 m2
Rolls per pallet/truck: 49 / 1764
Pallet weight: 1,177 lbs / 534 kg

*Test data is based on average taken over several production runs and should not be considered or interpreted as minimum or maximum values. Values are typical data and not limiting specifications. 1Grains/h/ft2/in Hg (perms) All values ± 10 %. This product is manufactured in accordance with national standards which allow for non-critical variances in weights and measures. † When correctly installed as per Sahara™ AnchorDeck™ installation instructions.