Sika Sarnafil Insulation/Roof Boards - Sarnatherm® Roof Board A-III
Sarnatherm Roof Board A‐III is a high‐density polyisocyanurate roof board
Sarnatherm® Roof Board A-III is a lightweight, high‐density polyisocyanurate roof board with coated glass facers. Sarnatherm® Roof Board A-III 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
- Manufactured using CFC‐, HCFC‐ and HFC‐free foam blowing technology
- Virtually no Global Warming Potential (GWP)
- Zero Ozone Depletion Potential (ODP)
- Recognized as resistant or highly resistant to mold growth
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
- Manufactured using CFC‐, HCFC‐ and HFC‐free foam blowing technology
- Virtually no Global Warming Potential (GWP)
- Zero Ozone Depletion Potential (ODP)
- Recognized as resistant or highly resistant to mold growth
Packaging
- 4 ft x 4 ft (1.2 m x 1.2 m), 8 lbs (3.6 kg)
- 4 ft x 8 ft (1.2 m x 2.4 m), 16 lbs (7.2 kg)
- 0.5" (12.7 mm) thickness, 42 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, Grade 1
- FM 4450 / 4470
- FM 4473 hail rating SH‐1
- UL Classified 790
- UL Certified for Canada
Product Information
Chemical BasePolyisocyanurate foam core with coated glass facers
Recycled Content7.4% Pre-consumer
Shelf LifeN/A
Storage ConditionsFactory‐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
Service Temperature-100 - 250°F (-73 - 121°C)
Application
Application Steps
APPLICATION INSTRUCTIONSSarnatherm® Roof Board A-III is installed by a Sika Authorized Applicator. Sarnatherm® Roof Board A-III 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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