TecTopics: LIQUISEAL Liquid Flashing Tips and Tricks
Preparation
LIQUISEAL Liquid Flashing won't adhere properly if surfaces aren't prepared. Always use the tables in the Liquid Flashing Attachments Inspection & Substrate Preparation to determine what preparation is needed for a given substrate. Here are some examples for common surfaces:
- Metal: Grind clean to expose bare steel or aluminum and create a rough surface before priming. Do not use a wire brush. Then apply LIQUISEAL Liquid Flashing Metal Primer and allow the primer to cure fully (this may take several hours).
- EPDM: Scuff the membrane using 60 grit sandpaper and clean with Weathered Membrane Cleaner. After this is complete, apply LIQUISEAL Liquid Flashing Metal Primer and allow the primer to cure fully (this may take several hours).
- TPO: Clean TPO with Weathered Membrane Cleaner - do not scuff with sandpaper as with other membranes - and apply Carlisle’s TPO Primer and allow to flash off.
- PVC and KEE HP: Scuff the membrane surface using 60 grit sandpaper and clean with PVC cleaner. No primer is needed prior to application on PVC or KEE membranes.
- Fleece: Always pre-cut and dry-fit your reinforcing fleece before mixing the resin. LIQUISEAL Liquid Flashing Resin has a "pot-life" of about 20-30 minutes once mixed, so prioritizing time is key.
General Tips, Tricks, and Precautions
- Carefully review all product data sheets, installation videos, and details (available on the Carlisle website) for proper installation techniques prior to use.
- Always wear gloves when mixing or applying LIQUISEAL Primers and Resin.
- The pot-life of LIQUISEAL products is short and will vary based on ambient temperatures. As the temperature rises, pot-life or workable time will get shorter. Always make sure area and materials are properly prepared before mixing.
- Fleece should be installed with the “fuzzy” size down. This is the natural direction that the product will unroll. If fleece is installed with the smooth side down, it will still perform. However, the finished surface will appear rough and may hold more dirt over time. Use a marker to mark which side should be up or down when dry-fitting fleece.
- To dispose of resin or primer, simply allow it to cure in mixing bucket before disposing in the trash.
- Never apply any LIQUISEAL products in temperatures lower than 40°F (4°C) and rising.
- Finished LIQUISEAL Liquid Flashing details will be rainproof within 2 to 4 hours of completion. Don’t walk on these areas for at least 24 hours.
- Repairs and touch-ups can be made by applying additional resin and fleece within 24 hours of application.
- Resin will be fully cured after 48 to 72 hours.
For more information about liquid flashing, check out these resources:
LIQUISEAL Liquid Flashing Installation Guide
Spec Supplement
LIQUISEAL Product Data Sheets
Liquid Flashing Tie-In Install Video
LIQUISEAL Liquid Flashing I Beam Detail Video
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