CertainTeed DiamondDeck HD Synthetic Roofing Underlayment, 48 in. x 250 ft (10 SQ Roll)
SKU: 96964821275

CertainTeed DiamondDeck HD Synthetic Roofing Underlayment, 48 in. x 250 ft (10 SQ Roll)

Sale price$169.50 Regular price$188.33
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Description

CertainTeed DiamondDeck HD Synthetic Roofing Underlayment, 48 in. x 250 ft (10 SQ Roll)DiamondDeck HD Synthetic Roofing Underlayment, 10 SQ Roll High performance, scrimreinforced synthetic roofing underlayment designed for superior weather protection and contractor safety. Offers outstanding dimensional stability versus felt and a slip resistant top surface for secure footing, even when wet. Key Features: High Performance Protection: Synthetic, scrimreinforced design resists water and helps prevent telegraphing wrinkles through shingles

DiamondDeck HD Synthetic Roofing Underlayment, 10 SQ Roll

High-performance, scrim‑reinforced synthetic roofing underlayment designed for superior weather protection and contractor safety. Offers outstanding dimensional stability versus felt and a slip-resistant top surface for secure footing, even when wet.


Key Features:

  • High Performance Protection: Synthetic, scrim‑reinforced design resists water and helps prevent telegraphing wrinkles through shingles
  • Slip-Resistant Surface: Special top treatment enhances traction and safety in wet conditions
  • Dimensional Stability: Won’t wrinkle like felt underlayment, ensuring a flatter shingle application
  • Durable & Lightweight: Excellent tear resistance with easy handling to speed installation
  • Code Compliance: Meets ASTM D226/D4869, UL 790 Class A, ASTM E108 Class A; ICC-ES ESR-3344; Florida/Miami‑Dade/TDI approvals

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Dimensions 48 in. x 250 ft
Coverage 937.5 sq. ft. per roll (10 squares)
Material Synthetic, scrim‑reinforced underlayment
Surface Slip‑resistant top surface
Style Underlayment
Manufacturer Number 95313
Product Number CTRDD
Approvals/Standards ASTM D226 and D4869; UL 790 Class A; ASTM E108 Class A; ICC‑ES ESR 3344; CAN/CSA A220; Florida Building Code Approved; Miami‑Dade County Approved; TDI Approved
Weight 38 lb per roll

Frequently Asked Questions (FAQ):

Q: What is the coverage per roll?
A: Each roll covers approximately 937.5 sq. ft. (10 squares).


Q: What roof types can it be used under?
A: Suitable beneath shingle, shake, metal, or slate roofing systems.


Q: Is it safer to walk on than felt?
A: Yes. The slip-resistant top surface provides improved traction, even when wet.


Q: How much does a roll weigh?
A: Approximately 38 lb per roll.


Q: Does it meet building code approvals?
A: Yes. It meets ASTM D226/D4869, UL 790 Class A, ASTM E108 Class A, ICC‑ES ESR‑3344, and has Florida, Miami‑Dade, and TDI approvals.


A Sleek, Secure Foundation for Elevated Rooflines

DiamondDeck HD lays down a clean, resilient base that keeps roof planes taut and refined. I love its slip‑resistant finish—form meets function for a safer, smarter installation. Pair it with dark architectural shingles to accentuate crisp edges and shadow lines. It’s the quiet luxury beneath the surface that ensures your exterior reads polished and enduring.


Choose DiamondDeck HD today for a safer install and a flatter, longer‑lasting roof system.

Warranty

Installation

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 96964821275

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4.7 ★★★★★
Based on 720 reviews
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Product Reviews
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Verified Purchase
TS
Lexington, US
★★★★★ 5
Great quality
Size: King (Pack of 2), Style: Medium, Configuration: Hometextile
LOVE this pillow. Soft and supportive for sitting against. Too big for sleeping but great for lounging.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 25, 2026
C
Verified Purchase
Cristiano K
Pawtucket, US
★★★★★ 4
Do not buy, I recommend looking for something else
Size: King (Pack of 2), Style: Medium, Configuration: Hometextile
I don't like the quality of those pillows. They don't have any support, super flat, it's like just using the pillow sheet without the pillow. I honestly don't get why this could even be a product. Amazon Basics brand is veryh nice but this one was a very bad one. I usually go with anything but this was worst than cheap airbnb pillows.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 15, 2026
N
Verified Purchase
Natalie Sopa
Alexandria, US
★★★★★ 5
Great
Size: King (Pack of 2), Style: Medium, Configuration: Hometextile
The medium density support is exactly as advertised and provides more support and firmness. The pillow is taller because of the density so maybe not great for stomach sleepers but works well for back and side sleeping. I bought this because I tried the same pillow at my sister’s house and woke up without neck pain for the first time in forever. Honestly better than my $100 pillow.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
M
Verified Purchase
MidwestMama
San Leandro, US
★★★★★ 1
These are firm pillows not medium as described.
Size: King (Pack of 2), Style: Medium, Configuration: Hometextile
These pillows are much too firm to be medium density as described. They are too stuffed full of filling. They barely give when my head is on them, so my neck ends up twisted. And they are ridiculously heavy. The filling is also uneven. I wish there was a zero stars option. Definitely returning them.
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Reviewed in the United States on May 17, 2026
J
Verified Purchase
Jessica F
New York, US
★★★★★ 3
Medium Density is flat and underfilled, soft is better. Get medium if you hate life or for in-laws
Size: King (Pack of 2), Style: Medium, Configuration: Hometextile
I thought the medium density version would be a firmer version of the soft version but I was very wrong. The medium version is very flat and has no support. Medium density feels like a cheapo $2 black friday pillow that's only useful as a decoration. I suppose the medium density fill version does have its use, you can get this pillow for a guest bed. Perfect for the in laws/guests you dislike so they don't get too comfortable and overstay their welcome. The soft one is very filled and nice to sleep on. The soft one feels firmer than the medium version, probably due to the fact that its probably filled twice as much as the medium density. Would recommend to get the soft density fill version of this pillow.
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Reviewed in the United States on August 10, 2024

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