SKU: 56768694481

GAF STRUCTODEK High Density Fiberboard Roof Insulation Cover Board, 1/2 in., 4 ft x 4 ft

Sale price$14.43 Regular price$16.03
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Description

GAF STRUCTODEK High Density Fiberboard Roof Insulation Cover Board, 1/2 in., 4 ft x 4 ftSTRUCTODEK HD Fiberboard Roof Cover Board, 1 2 in. 4x4 High density STRUCTODEK fiberboard cover board delivers strong adhesion and durability for commercial roofing systems. Its Primed Red Coating promotes solid membrane bonding while optimizing adhesive coverage for efficient, cost effective installations. Key Features: High Density Performance: Engineered fiberboard resists compression and provides a stable substrate for roof membranes Primed Red

STRUCTODEK HD Fiberboard Roof Cover Board, 1/2 in. 4x4

High-density STRUCTODEK fiberboard cover board delivers strong adhesion and durability for commercial roofing systems. Its Primed Red Coating promotes solid membrane bonding while optimizing adhesive coverage for efficient, cost-effective installations.


Key Features:

  • High-Density Performance: Engineered fiberboard resists compression and provides a stable substrate for roof membranes
  • Primed Red Coating: Enhances membrane adhesion and helps maximize square-foot coverage per gallon of adhesive
  • Code Compliant: Meets ASTM C208 Type II and multiple UL, FM, and Miami-Dade approvals for trusted use
  • Convenient Size: 1/2 in. thickness in a 4 ft x 4 ft panel for easy handling and layout
  • Versatile Application: Suitable as a cover board over roof insulation in a variety of commercial roofing systems

Specifications Table:

Specification Details
Brand GAF
Product Name STRUCTODEK High Density Fiberboard Roof Insulation Cover Board
Thickness 1/2"
Dimensions 4' x 4'
Item Weight 13.6 lb
Style Roofing Insulation
Unit of Measure SQ | PC
Manufacturer Number FB440.5
Product Number GAF05FB4HD
Applicable Standards/Approvals ASTM C208 Type II Grades 1 & 2; CAN/ULC-S706-09 Type II Classes 1 & 2; UL Classified UL 790; CAN/ULC-S107; FM Approved Class 1 (FM 4450/4470); Canadian Evaluation CCMC #13186-L; FBC FL #13792; LEED; Miami-Dade County Approved
Long Description STRUCTODEK High Density Fiberboard Roof Insulation possesses unique bonding characteristics for superior adhesion with current membranes and adhesives; the Primed Red Coating allows a solid membrane bond while optimizing adhesive coverage.

Frequently Asked Questions (FAQ):

Q: What is the thickness and size of this board?
A: This variant is 1/2 inch thick and measures 4 feet by 4 feet.


Q: How does the Primed Red Coating help?
A: It promotes a strong membrane bond while improving adhesive spread rate for efficient coverage.


Q: What standards and approvals does it meet?
A: ASTM C208 Type II (Grades 1 and 2), CAN/ULC-S706-09 Type II, UL 790, CAN/ULC-S107, FM 4450/4470, CCMC #13186-L, FBC FL #13792, LEED, and Miami-Dade County Approved.


Q: Where is it used in a roofing system?
A: As a cover board over insulation to provide a smooth, durable substrate for the roof membrane.


Q: What is the unit weight?
A: Approximately 13.6 lb per board.


A Refined, Resilient Foundation for Modern Rooflines

This board introduces a rich, earthy red surface that brings quiet confidence to the unseen layers of design. Its primed finish is the hero—creating an impeccably smooth canvas for membranes to adhere with precision. Pair it with clean-lined metal edges and a monochrome membrane for a crisp architectural statement. It’s an essential building block of luxurious, high-performance roofing craft.


Choose STRUCTODEK HD today for a stronger, faster-adhering roof system that’s built to last.

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: 56768694481

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Khwaja Hedayat Ullah sediqi
Los Angeles, US
★★★★★ 5
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Set name: Adult Tube - 3.4oz.
I really like this Grass-Fed Tallow Mineral Sunscreen. It feels natural on the skin and doesn’t cause irritation. The texture is smooth, easy to apply, and gives good sun protection. I also like that it uses mineral ingredients and doesn’t have a strong chemical smell. It leaves a slight white cast at first, but it blends in after a few minutes. Great option for people with sensitive skin
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Reviewed in the United States on May 20, 2026
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SD Tortuga
Louisville, US
★★★★★ 5
No burn after a week on Lake Havasu
Set name: Adult Tube - 3.4oz.
A week on Lake Havasu in the Arizona sun without any burning. The sunscreen goes on smoothly and works in quickly. No difficulty getting the white tint to go away. No odd smell. No sticky feeling. For reference I am of Scandinavian decent with fair skin and very blonde hair.
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Reviewed in the United States on May 11, 2026
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Hilcia Acevedo
Dallas, US
★★★★★ 4
easy to blend AND no white cast? UNREAL but true
Set name: Adult Tube - 3.4oz.
i was initially drawn to this sunscreen because i saw it had a great EWG score (1). i hesitated at first because of the price but very happy i went through with my purchase. i have medium to tan combination skin and this sunscreen was very easy to blend onto my face, given that it has a moisturizer like texture. and the best part? NO WHITE CAST. only removing a star because it is still pricey especially for the size which is why I've been limiting its use to my face lol
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Reviewed in the United States on April 9, 2026
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Erin Barrom
Natrona Heights, US
★★★★★ 5
Great for sensitive skin!
Set name: Adult Tube - 3.4oz.
Great product! With sensitive skin this is wonderful without the white cast, grainy feel, and chemicals! Used on my kids and myself during softball days with no burns or rashes!! We always have a hard time finding good sunscreen that I don’t stress about! This is one I will buy again! Highly recommend!
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Reviewed in the United States on May 23, 2026
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Laura E. Cote
Carnegie, US
★★★★★ 5
The best!! So glad I took a chance and ordered
Set name: Adult Tube - 3.4oz.
This is the best natural sunscreen I have ever used and I am so excited to find one that is tallow-based and has none of the usual offenders. It goes on like a dream, leaves no white cast, and is not greasy or thick. It’s just perfect and I will always order and keep some on hand. Thank you!!
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Reviewed in the United States on April 8, 2026

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