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Georgia-Pacific DensDeck Prime Roof Board, 1/2 in x 4 ft x 4 ft

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Georgia-Pacific DensDeck Prime Roof Board, 1/2 in x 4 ft x 4 ft

DensDeck Prime 1/2" Roof Board (4x4)

Glass-mat faced gypsum roof board engineered for superior adhesion with modern roofing systems. Ideal for adhered and self-adhered membranes, modified bitumen, and hot-mopped or cold-applied applications, delivering consistent adhesive coverage and improved bond strength.


Key Features:

  • Enhanced Adhesion: Face mat optimized for uniform adhesive application and stronger bonds
  • Versatile Compatibility: Works with adhered, self-adhered, hot-mopped, cold mastic, torch-applied modified bitumen, and single-ply systems
  • Material Strength: Glass-mat faced gypsum core resists damage and helps create a robust roofing assembly
  • Installation Efficiency: Potentially reduces adhesive/mastic usage and may eliminate field primer
  • Code-Compliant: Meets ASTM C1177 with UL 790/1256 classifications, FM Class 1 approvals, and Florida/Miami-Dade approvals

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Thickness 1/2" (12.7 mm)
Dimensions 4' x 4'
Material Glass-mat faced gypsum
Product Number GPC12DDP4
Manufacturer Number DDP 1/2X4X4
Item Weight 31.6 lb
Style Roofing Insulation
Applicable Standards and Approvals ASTM C1177; CE Certified; UL 790, 1256 Classification; FM Class 1 Approvals; Florida Building Code; Miami-Dade County Approved

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and thickness?
A: It measures 4 ft x 4 ft with a 1/2 in (12.7 mm) thickness.


Q: Which roofing systems is it compatible with?
A: Designed for adhered and self-adhered membranes, hot-mopped, cold mastic, and torch-applied modified bitumen, as well as single-ply systems.


Q: Does it require a field primer?
A: Enhanced face mat may eliminate the need for a field primer depending on adhesive manufacturer guidance.


Q: What performance benefit does the enhanced face mat provide?
A: Testing with solvent-based adhesives showed an average of 24% better bond compared to the original product.


Q: What standards and approvals does it carry?
A: ASTM C1177; UL 790/1256; FM Class 1; Florida Building Code; Miami-Dade County Approved.


A refined, resilient layer for modern roof design

The DensDeck Prime Roof Board introduces a sleek, tailored foundation that elevates the rooftop into a meticulously composed surface. Its enhanced face mat is the quiet hero, ensuring adhesives glide on with precision for a flawless finish. Pair it with clean-lined single-ply membranes to underscore a contemporary silhouette. This board is a discreet essential—bringing durability and polish to luxurious, performance-driven exteriors.


Choose DensDeck Prime to streamline installation and achieve stronger, code-compliant roofing performance.

Warranty

Installation

$5.54

Original: $18.47

-70%
Georgia-Pacific DensDeck Prime Roof Board, 1/2 in x 4 ft x 4 ft

$18.47

$5.54

Product Information

Shipping & Returns

Description

DensDeck Prime 1/2" Roof Board (4x4)

Glass-mat faced gypsum roof board engineered for superior adhesion with modern roofing systems. Ideal for adhered and self-adhered membranes, modified bitumen, and hot-mopped or cold-applied applications, delivering consistent adhesive coverage and improved bond strength.


Key Features:

  • Enhanced Adhesion: Face mat optimized for uniform adhesive application and stronger bonds
  • Versatile Compatibility: Works with adhered, self-adhered, hot-mopped, cold mastic, torch-applied modified bitumen, and single-ply systems
  • Material Strength: Glass-mat faced gypsum core resists damage and helps create a robust roofing assembly
  • Installation Efficiency: Potentially reduces adhesive/mastic usage and may eliminate field primer
  • Code-Compliant: Meets ASTM C1177 with UL 790/1256 classifications, FM Class 1 approvals, and Florida/Miami-Dade approvals

Please check the Product Data Sheet Here


Specifications Table:

Specification Details
Thickness 1/2" (12.7 mm)
Dimensions 4' x 4'
Material Glass-mat faced gypsum
Product Number GPC12DDP4
Manufacturer Number DDP 1/2X4X4
Item Weight 31.6 lb
Style Roofing Insulation
Applicable Standards and Approvals ASTM C1177; CE Certified; UL 790, 1256 Classification; FM Class 1 Approvals; Florida Building Code; Miami-Dade County Approved

Frequently Asked Questions (FAQ):

Q: What are the board dimensions and thickness?
A: It measures 4 ft x 4 ft with a 1/2 in (12.7 mm) thickness.


Q: Which roofing systems is it compatible with?
A: Designed for adhered and self-adhered membranes, hot-mopped, cold mastic, and torch-applied modified bitumen, as well as single-ply systems.


Q: Does it require a field primer?
A: Enhanced face mat may eliminate the need for a field primer depending on adhesive manufacturer guidance.


Q: What performance benefit does the enhanced face mat provide?
A: Testing with solvent-based adhesives showed an average of 24% better bond compared to the original product.


Q: What standards and approvals does it carry?
A: ASTM C1177; UL 790/1256; FM Class 1; Florida Building Code; Miami-Dade County Approved.


A refined, resilient layer for modern roof design

The DensDeck Prime Roof Board introduces a sleek, tailored foundation that elevates the rooftop into a meticulously composed surface. Its enhanced face mat is the quiet hero, ensuring adhesives glide on with precision for a flawless finish. Pair it with clean-lined single-ply membranes to underscore a contemporary silhouette. This board is a discreet essential—bringing durability and polish to luxurious, performance-driven exteriors.


Choose DensDeck Prime to streamline installation and achieve stronger, code-compliant roofing performance.

Warranty

Installation

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