RT40 BUTYL™ is a 40mil self-adhered flashing membrane. RT40™ is an exclusive laminate of reflective aluminum foil facer with butyl compound. As waterproof flashing membrane, it adheres to most surfaces and seals around punctures, forming a protective air, vapour and waterproof barrier. It is specifically designed to be self-adhered to most substrates without using any primer.

NO PRIMER NEEDED

Self-adhered (cold application).
Impermeable to air, moisture, vapour and water.
Excellent cold-weather adhesion.
Aluminum surface reflects heat, lowering the utility costs.
Tough, durable, with puncture and abrasion resistance.
Requires no coating or covering, allowing 365 days of UV exposure.
No primer is needed, allowing for quick installation.
High and low-temperature performance.
Self-sealing around nails and fasteners for long-lasting water tightness.
Can be installed at temperatures as low as 0 °F (-18 °C), keeping projects on schedule even during winter months.
Advanced adhesive allows flashing to remain in place without mechanical fasteners.
AAMA 711 compliant.