Product Data Sheet Safety Data Sheet Show all documents

Sarnatherm® Roof Board M

Sarnatherm Roof Board M is a high‐density polyisocyanurate roof board

Sarnatherm® Roof Board M is a lightweight, high-density polyisocyanurate roof board with coated glass facers. Sarnatherm® Roof Board M is suitable for use in new construction and recover roof applications with Sarnafil® or Sikaplan® roof membranes. The coated glass facers provide strong, smooth surfaces suitable for mechanically attached or adhered applications.

  • Lightweight for easy hoisting, staging and maneuvering
  • High impact and flexural strength
  • Easy scoring, cutting and snapping
  • Improved coverage rates in adhered systems
Product Data Sheet Safety Data Sheet Show all documents

Usage

Used as a lightweight roof board in conventional roof assemblies  
Areas of Application
  • New Roofs
  • Recover Roofs
  • Mechanically Attached Systems
  • Adhered Systems
 

Advantages

  • Lightweight for easy hoisting, staging and maneuvering
  • High impact and flexural strength
  • Easy scoring, cutting and snapping
  • Improved coverage rates in adhered systems

Packaging

4 ft x 4 ft (1.2 m x 1.2 m), 6 lbs (2.72 kg)
4 ft x 8 ft (1.2 m x 2.4 m), 12 lbs (5.4 kg)
0.25" (6.4 mm) thickness, 30 boards per pallet

Colour

Off‐white core with off white/light tan facers

Product Details

Sustainability / Certifications / Approvals

APPROVALS / STANDARDS

  • ASTM C1289, Type II, Class 4, Grades 1, 2, & 3
  • FM 4450 / 4470
  • UL Classified 790
  • Miami‐Dade County
 
Product Information

Chemical Base

Polyisocyanurate foam core with coated glass facers.

Recycled Content

3.7% Pre-consumer

Shelf Life

N/A

Storage Conditions

Factory‐applied packaging is intended only for protection during transit. When stored outdoors or on the job site, the insulation should be stacked on pallets at least 4" (102 mm) above ground level and completely covered with a weatherproof covering such as a tarpaulin. The temporary factory‐applied packaging should be slit or removed to prevent accumulation of condensation. Refer to PIMA Technical Bulletin #109: Storage and Handling Recommendations for Polyiso Roof Insulation.
Technical Information

Compressive Strength

150 psi (1,034 kPa)

(ASTM D-1621)

Flexural Strength

1500 psi (10,343 kPa)1

25 lbf (0.111 kN)2

(ASTM D-1037)

1 Modulus of Rupture, 2 Breakload

Dimensional Stability

< 1 %

(ASTM D-2126)

Thermal Resistance

1.2

(ASTM C-518)

Permeability to Water Vapor

< 1 Perm (< 57.5 ng/(Pa∙s∙m2))

(ASTM E-96)

Water Absorption

< 4 %

(ASTM C-209)

Microbiological Resistance

Pass

(ASTM D-3273)

Application

Application steps

APPLICATION INSTRUCTIONS

Sarnatherm® Roof Board M is installed by a Sika Authorized Applicator. Sarnatherm® Roof Board M may be installed by mechanical attachment to the roof deck with approved fasteners and insulation plates or by attachment with Sarnacol board adhesive depending on project requirements and specifications. Roof boards that have become wet or damaged should be removed and replaced with solid, dry roof boards. Contact Sika Corporation – Roofing Technical Department regarding alternative methods of attachment.

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