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Soprema DensDeck Prime Roof Board, 1/4 inch, 4 ft x 4 ftDensDeck Prime 1 4" Roof Board (4' x 4') Durable gypsum based roof substrate engineered for commercial roofing systems. Designed to resist fire, foot traffic, and hail while delivering superior dimensional stability and compressive strength for long service life. Key Features: Versatile Compatibility: Suitable for hot bitumen, cold applied (COLPLY), self adhesive, and heat weldable membranes Enhanced Durability: Superior compressive strength supports
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DensDeck Prime 1/4" Roof Board (4' x 4')

Durable gypsum-based roof substrate engineered for commercial roofing systems. Designed to resist fire, foot traffic, and hail while delivering superior dimensional stability and compressive strength for long service life.


Key Features:

  • Versatile Compatibility: Suitable for hot-bitumen, cold-applied (COLPLY), self-adhesive, and heat-weldable membranes
  • Enhanced Durability: Superior compressive strength supports installation equipment and post-construction foot traffic
  • Fire and Impact Resistance: Helps mitigate risks from fire and hail to extend roof lifespan
  • Stable Performance: Low thermal and hygrometric expansion reduces movement; cover boards do not require gapping
  • Commercial Grade: Trusted substrate for virtually any commercial roofing system

Specifications Table:

Specification Details
Product Name DensDeck Prime
Brand Soprema
Style Roofing Insulation
Thickness 1/4"
Dimensions 4' x 4'
Unit of Measure SQ | PC
Item Weight 19.7 lb
Applicable Standards ASTM C1177; Florida Building Code Approved; Miami-Dade County Approved; ASTM E84; ASTM C473 Method B; ASTM E661; ASTM E96; ASTM C518; ASTM C473; UL 790 Classified; UL 1256 Classified; FM Class 1 Approved
Product Number SOP25DDP4
Florida Product Approval Resource https://www.floridabuilding.org/upload/PR_Tech_Docs/FL3915_R39_AE_2025_04_07_FINAL_NER-SOP-004.A.R3_FL3915-R39.pdf

Frequently Asked Questions (FAQ):

Q: What types of roofing membranes are compatible?
A: Compatible with hot-bitumen bonded, COLPLY cold-adhesive bonded, self-adhesive, and heat-weldable membranes.


Q: Do the panels need to be gapped during installation?
A: No, DensDeck panels used as cover boards do not need to be gapped.


Q: What standards and approvals does it meet?
A: Meets ASTM C1177, E84, C473 (incl. Method B), E661, E96, C518; UL 790 and UL 1256 Classified; FM Class 1 Approved; Florida Building Code and Miami-Dade County Approved.


Q: What is the board size and thickness?
A: This variant is 4 ft x 4 ft with a 1/4 inch thickness.


Q: How heavy is each board?
A: Approximate item weight is 19.7 lb per piece.


A resilient foundation for refined rooftops

DensDeck Prime brings a sleek, purposeful layer to the roofscape—quiet strength with a cultivated edge. Its prime surface and steadfast core deliver stability underfoot and poise beneath high-performance membranes. Pair it with minimalist parapet detailing and a uniform membrane to create a crisp, architectural silhouette. For elevated projects, this board is the discreet essential that anchors luxurious durability.


Choose DensDeck Prime to fortify your roofing system with stable, code-approved performance that lasts.

Soprema DensDeck Prime Roof Board, 1/4 inch, 4 ft x 4 ft

Item no : 97588240606
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US$ 18.74
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Min. order: 1piece

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