U.S. Gypsum Securock Gypsum-Fiber Roof Board, 1/4 in. x 4 ft. x 4 ft.
SKU: 40421034020

U.S. Gypsum Securock Gypsum-Fiber Roof Board, 1/4 in. x 4 ft. x 4 ft.

Sale price$14.12 Regular price$15.69
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Ships within 48 hours · Estimated delivery Jul 7 - Jul 12

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Description

U.S. Gypsum Securock Gypsum-Fiber Roof Board, 1/4 in. x 4 ft. x 4 ft.Securock 1 4 in Gypsum Fiber Roof Board (4x4) High performance USG Securock gypsum fiber roof board engineered for low slope roofing systems. Its fiber reinforced, uniform core delivers strength, water resistance, and reliable adhesion across adhered systems. Key Features: Fiber Reinforced Strength: Uniform composition provides durability through the core with no facer to delaminate Low Water Absorption: Designed for superior bond and reduced moisture

Securock 1/4-in Gypsum-Fiber Roof Board (4x4)

High-performance USG Securock gypsum-fiber roof board engineered for low-slope roofing systems. Its fiber-reinforced, uniform core delivers strength, water resistance, and reliable adhesion across adhered systems.


Key Features:

  • Fiber-Reinforced Strength: Uniform composition provides durability through the core with no facer to delaminate
  • Low Water Absorption: Designed for superior bond and reduced moisture uptake in adhered roofing systems
  • High Wind-Uplift Ratings: Consistent core construction supports robust performance in approved assemblies
  • Sustainable Content: Manufactured with 97% recycled material for environmentally conscious projects
  • Versatile Compatibility: Suitable for single-ply, fluid-applied, spray foam, built-up, metal, and modified bitumen roofs

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Thickness 1/4 in (6.4 mm)
Length 4 ft (1220 mm)
Width 4 ft (1220 mm)
Material Gypsum-fiber (facer-free, fiber-reinforced uniform composition)
Certifications/Approvals UL Classified; FM Approved; LEED; SCS Global Services Certified
Standards ASTM D3273; ASTM C1278; ASTM E84
Intended Use High-performance roof board for low-slope roofing systems
Compatible Roofing Systems Single-ply; Fluid-applied; Spray foam; Built-up; Metal; Modified bitumen
Recycled Content 97% recycled material
Item Weight 27 lb per sheet
Style Roofing Insulation
Manufacturer Product Number USG14SR4GF
Manufacturer Number 61050410

Frequently Asked Questions (FAQ):

Q: What roofing systems is this board compatible with?
A: Single-ply, fluid-applied, spray foam, built-up, metal, and modified bitumen systems.


Q: Is the board moisture resistant?
A: Yes. Its uniform gypsum-fiber core provides water resistance and low absorption to enhance adhesion.


Q: Does it have third-party approvals?
A: Yes. It is UL Classified and FM Approved, and meets ASTM D3273, ASTM C1278, and ASTM E84; also recognized for LEED and SCS certifications.


Q: What are the panel dimensions and thickness?
A: 1/4 inch thick, 4 feet by 4 feet.


Q: What is the weight of a sheet?
A: Approximately 27 lb per sheet.


Quiet Strength for Confident Roof Design

This gypsum‑fiber board brings a refined rigor to the roofscape—sleek, understated, and unwavering. The uniform, facer‑free core is the hero, ensuring a smooth, resilient substrate that performs beautifully beneath any membrane. Pair it with clean metal edge details and a monochrome membrane for a crisp, architectural silhouette. It’s an essential layer of stability and poise for truly elevated, modern envelopes.


Choose Securock Gypsum-Fiber Roof Board today for a strong, moisture-resistant substrate that elevates performance across your low-slope roofing 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: 40421034020

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林金池
Birmingham, US
★★★★★ 5
Very satisfied with the excellent quality and fast delivery.
Very satisfied with the excellent quality and fast delivery.
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Reviewed in the United States on June 2, 2026
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Dale E.
Grantham, US
★★★★★ 5
Great Sunscreen
Love this sunscreen. What I like most is that it goes on very dry with zero greasy feeling or shine. The sunscreen is also scent free. I’ve seen several review where purchases stated that they received expired product. Mine arrived in January 2023 and expires February, 2024. I highly recommend this product.
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Reviewed in the United States on March 6, 2023
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jeannie
Grantham, US
★★★★★ 5
A good product
I’m very satisfied with this product. The quality is excellent, it arrived on time, and it works exactly as described. Definitely worth the purchase and I would highly recommend it to others.
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Reviewed in the United States on October 4, 2025
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Runner girl
Port Orchard, US
★★★★★ 5
Doesn’t stain clothes and lightweight
Something that always bothers me about sunscreen is how it stains clothing. I did not have that problem with this sunscreen. It was lightweight. It only had a very mild gritty feeling after having it on for over 8 hours and sweating a ton. Best sunscreen out there right now!
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Reviewed in the United States on July 22, 2023
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Cessy
Belleville, US
★★★★★ 5
The only sunscreen that does not break me out!
I have oily to normal skin with general sensitivity. The breakout-free Neutrogena sunscreens are the only ones that don't break out my face and body, even with reapplication. I have repurchased several times and highly recommend. There is only a slight white cast left over but here's my hack for no whitecast: apply a small amount to fingers and rub to warm, pat to cover face, then rub to blend in, then repeat with another layer. Perfect for underneath makeup, I usually put it on before primer.
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Reviewed in the United States on December 5, 2022

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