Project fit
Review roof covering, deck, slope, ventilation and applicable local requirements.
LAYVEX SA · ROOFING UNDERLAYMENT
Reflective underlayment. Ice and water shield.
Self-adhered reflective roofing underlayment and ice and water shield for suitable roof assemblies, supplied in 240 sq ft rolls.
SELF-ADHERED PROTECTION
An ice and water shield with a reflective surface.
LAYVEX SA combines self-adhered roofing underlayment with a reflective surface. The supplied product literature identifies SA as an ASTM D1970 ice and water shield with self-sealability around fasteners.
Review substrate preparation, application conditions and all roof-system requirements with the current SA installation instructions.
- Roll format
- 4 ft × 60 ft
- Gross roll area
- 240 sq ft / 2.4 squares
- Attachment
- Self-adhered
Gross roll area is not net installed coverage. Allow for required overlaps and project details.
PRODUCT-SPECIFIC TECHNICAL INFORMATION
LAYVEX SA testing references.
The following summarizes the supplied SA marketing literature.
| Test reference | Reported product information |
|---|---|
| ASTM D1970 | SA is described in the supplied marketing literature as an ice and water shield with self-sealability around fasteners. |
Results apply to the specified product. Suitability depends on the complete roof assembly and applicable requirements.
BEFORE YOU SPECIFY
Confirm the complete roof assembly.
Installation details
Use current product instructions for laps, attachment, penetrations and exposure limits.
Performance context
Reflective performance depends on assembly and air spaces. Surface properties alone do not establish installed-system performance or energy savings.
BEFORE YOU GET STARTED
Questions business owners ask.
What is the difference between LAYVEX RB and SA?
RB is mechanically attached reflective roofing underlayment. SA is self-adhered reflective roofing underlayment and an ice and water shield. Select the product for the intended roof assembly using current project-specific documentation.
How much material is on each roll?
RB is 4.5 ft × 100 ft, or 450 sq ft (4.5 squares) per roll. SA is 4 ft × 60 ft, or 240 sq ft (2.4 squares) per roll. These are gross roll areas. Installed coverage is reduced by required overlaps and project details.
Is LAYVEX the same as ELEVATE attic insulation?
No. LAYVEX is roofing underlayment for suitable roofing projects. AttiicELEVATE™ is Advanced Multi-Layer Reflective Insulation designed for residential attic applications. They have different applications and installation requirements.
Does a reflective surface guarantee energy savings?
No. Thermal performance depends on the roof assembly, air spaces, ventilation, climate and installation. Surface properties alone do not establish installed-system performance or energy savings.
What should be considered for a roofing project?
Consider the roof covering, substrate, slope and local requirements. Follow current product-specific installation instructions.
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