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

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

Regular price $18.74

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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.

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Subject to Approval & Availability
All orders are reviewed before fulfillment. You are not charged until your order is approved and ready to ship — and you may cancel at any time before that at no cost.

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