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Item #:
163835587
CertainTeed 12 mil Thick Gray Polymer Synthetic Underlayment 937.5 Sq ft Coverage
85% of respondents would recommend this to a friend
Item #:
163835587
NGN 509874
Price Details
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*All items will import from US
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Imported from USA store
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Only 12 items left in stock.
Order now and get it around Friday, November 27
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What Stands Out
Superior Thickness
With a robust 12 mil thickness, this underlayment provides exceptional durability and protection against moisture, enhancing the lifespan of your flooring investments.
Large Coverage Area
Covers 937.5 square feet, making it ideal for larger projects. This extensive coverage minimizes waste and ensures consistent performance across your entire flooring installation.
Moisture Barrier
Designed as a synthetic underlayment, it effectively prevents moisture infiltration, reducing the risk of mold and mildew, thus safeguarding your living space.
Product Details
- The CertainTeed Diamond Deck Synthetic Underlayment is a high performance, polymer-based layer that is reinforced with gauze and is water-resistant. This underlayment layer is meant to be placed beneath asphalt roofing shingles, wood shingles and shakes, metal shingles and panels, concrete tile or slate. Compared to standard asphalt felt underlayment, Diamond Deck Roof Underlayment has remarkable dimensional stability that eliminates the possibility of hygro-expansion wrinkles. The standard asphalt felt underlayment can cause distasteful wrinkles on the finished roof, because it can become very wrinkled when it picks up moisture. Diamond Deck has an extra-large length and width for a speedy application, and it has a special top surface treatment that provides superb slip resistance, even when it is wet. Please Note: Walking or crawling on any roof surface can be dangerous, especially when wet or snow/ice-covered.
| Material | Polymer |
| Coverage area | 937.5 sq ft |
| Color | Gray |
| Thickness | 0.01 in |
| Shape | Roll |
| Brand | CertainTeed |
| Features | Water-Resistant |
| Recommended surface | Concrete |
| Height | 0.01 in (0.03 cm) |
| Fire rating | Class A, B, C |
| Assembled product weight | 38 lbs (17.24 kg) |
| Accessories included | None |
| Model | CTDD |
| Multipack quantity | 1 |
Who Should Buy?
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Homeowners
Ideal for homeowners seeking durable and moisture-resistant underlayment for roofing projects, ensuring better insulation and protection.
-
Contractors
Professional contractors will benefit from the ease of installation and reliable performance of this synthetic underlayment during construction.
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Climate Areas
Best suited for regions with varying climates, providing enhanced waterproofing and temperature regulation for roofing systems.
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Low-Budget Projects
Not suitable for low-budget projects where cheaper materials may already be sufficient and cost efficiency is prioritized.
Product Description
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Customer Questions & Answers
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Question:
How to Shop CertainTeed 12 mil Thick Gray Polymer Synthetic Online From Ubuy?
Answer: It’s easy to shop CertainTeed 12 mil Thick Gray Polymer Synthetic online from Ubuy. You just have to search for the product, choose your shipping method while checking out and get it delivered to your location. -
Question:
Is CertainTeed 12 mil Thick Gray Polymer Synthetic Available to Shop Online in Nigeria?
Answer: Yes, at Ubuy Nigeria this product is available for you to shop at a reasonable price. The CertainTeed 12 mil Thick Gray Polymer Synthetic is not available locally but you can trust us with our express shipping services. -
Question:
How Long Does It Take to Get Product After Placing the Order?
Answer: The delivery time of your ordered product varies as per what you've ordered and the shipping method that you've chosen. The estimated delivery time is mentioned during the checkout process, so be carefree while shopping.
CertainTeed Editorial Review
CertainTeed 12 mil Thick Gray Polymer Synthetic Underlayment is designed for optimal moisture protection with a coverage area of 937.5 sq ft. This water-resistant underlayment is suitable for use over concrete surfaces, making it a versatile choice for your flooring projects. With a thickness of 0.01 in, it provides a solid barrier while maintaining a lightweight profile of 38 lbs. Users have praised its effectiveness in enhancing the longevity of flooring installations, especially for those concerned about water damage. This product is built with a Class A, B, C fire rating, ensuring safety alongside performance, making it a reliable option for any construction or renovation work.
Customer Reviews & Ratings
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Pros
- Water-resistant for enhanced flooring protection
- Suitable for concrete surfaces
- Lightweight design for easy handling
- Class A, B, C fire rating for safety
- Covers large area of 937.5 sq ft
Cons
- Limited color options available for aesthetic matching
Platform Trust & Buyer Confidence
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Mona
Verified buyer
“Everything was efficient and fast. ”
05 November 2026 · via Trustpilot
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Music
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“The prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services. My experience with the "Ubuy" website was excellent. I purchased a PRS USA Swamp Ash Special guitar, and it arrived in just 11 days. The shipping service was fantastic, and the product arrived in perfect condition. What I particularly appreciated about the site is that the prices—including shipping costs and customs duties—are clear from the very beginning, with no hidden fees. I highly recommend using their services.”
05 November 2026 · via Trustpilot
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William
Verified buyer
“I can't fault this purchase. Had a scarce part i needed, cheaper than i could source it in the UK, ordered and was followed up with great communication and speedy delivery of a very well packaged part.”
06 November 2026 · via Trustpilot
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Andrew
Verified buyer
“Fast delivery, good and secure packaging, everything was fine and with no problems.”
06 November, 2026 · via Trustpilot
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Stephen
Verified buyer
“I am very happy with my insoles purchase, they make my work boots very comfortable and soft to walk on and even mitigate the vibration from driving the truck all day. I would highly recommend this company for online purchases, reliability of product delivery and value for money.”
07 November 2026 · via Trustpilot
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NGN 509874
Order now and get it around Friday, November 27
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
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