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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osborne
Pawtucket, US
★★★★★ 3
Working
Hard to find work great
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Reviewed in the United States on May 14, 2026
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Jon
Birmingham, US
★★★★★ 4
Did its job
Got me back onto the water. The mounting holes distances from center to center are less than original equipment. But in a pinch they will do the job.
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Reviewed in the United States on May 29, 2024
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TS
West Palm Beach, US
★★★★★ 1
Missing the xomolete backside with bracket
Item had great reviews Came in and upon opening i noticed the whole backside was missing like it was never assembled properly and the missing part was not in bag Disappointed with whole thing Returned and ordered a oen Scared if this poorly made i dis not want kt leaving me on the water
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Reviewed in the United States on July 26, 2024
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Charity young
Houston, US
★★★★★ 5
for my minn kota trolling motor 70lb thrust
Size: 6 AWG - 25 Foot, Style: With Terminal Connectors
used these to run a plug in outlet for my minn kota trolling motor 70lb thrust worked great
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Reviewed in the United States on January 11, 2026
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Max Podolsky
Battle Creek, US
★★★★★ 5
Easy to use
Style: 6-Speaker
This was a lifesaver. After buying a house, I discovered a huge mess of audio cables wired throughout the place, and this plate made it possible to finally get everything organized. Quality is decent, not the best, but good for the value. Super easy to use and connect even old wires to it from the back.
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Reviewed in the United States on December 31, 2025

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