Max-Seal
Butyl Tape
Substrate Preparation: All surfaces must be clean, dry, and smooth. Structural concrete should be cured for a minimum of 7 days.
Application Cut Max-Seal into manageable lengths. Remove the release liner. Apply membrane from the lowest point upward, overlapping horizontal edges in shingle fashion. Self-adhering membranes must be rolled with a suitable hard roller to ensure the entire membrane is pressed firmly into the substrate. Apply an approved sealant to all termination edges, laps, cuts, and penetrations. Seal all terminations, detailing, and protrusions with a recommended sealant.
Adhere Max-Seal to a dry and clean substrate when air and surface temperatures are above 10ºF. When applying Max-Seal in ambient temperatures below 40ºF, store at room temperature until use. The service temperature is -30ºF to 200ºF. Max-Seal must not be left permanently exposed and must be covered within 180 days of installation. Do not apply the membrane to a substrate that has absorbed water.
- Laps should have at least a 2" overlap and be sealed with an approved sealant.
- Repairs of the membrane must use Max-Seal to cover the hole at least 6" in all directions from the edge of the hole.
- The membrane must be protected after installation to prevent damage.
Precautions & Limitations
- SLIPPERY - DO NOT install on the roof or walking surfaces.
- Some caulk containing high levels of hydrocarbons and/or plasticizers may be incompatible with the adhesive in Max-Seal. Check with the caulk manufacturer or your local York representative.
