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.