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Select the Right Size:
Ensure that you choose expanding foam tape that is designed for gaps within the 2-6mm range. Using a tape that is too thick or too thin may not provide an effective seal.
Pre-compressed foam sealant tape is made from impregnated fine cell polyurethane tape which expands slowly and evenly to provide a high performance weather seal.
Clean the Surfaces:
Before applying the tape, make sure that the surfaces on either side of the joint are clean and free from dust, debris, and grease. This will help the tape adhere better and create a more effective seal.
Cut to Size:
Trim the expanding foam tape to the length of the joint you are sealing. If the tape is too long, you can cut it to fit precisely, ensuring complete coverage of the gap.
Peel and Stick:
Most expanding foam tapes come with a peel-off backing. After cutting the tape to the desired length, peel off the backing and carefully apply the tape along the joint, pressing it firmly into place.
Compression and Expansion:
Expanding foam tape works by compressing when applied and expanding to fill the gap. Ensure that the tape is compressed slightly when applied so that it can expand to fill the joint effectively.
Allow for Expansion:
After applying the tape, allow it some time to expand and fully fill the joint. This may take a few hours or even a day, depending on the specific product. Follow the manufacturer's instructions for the recommended expansion time.
Check for Excess Foam:
Once the foam has fully expanded, check for any excess foam that may have expanded beyond the joint. Trim off any excess material using a utility knife or scissors.
Paint or Trim:
Depending on the application, you may want to paint over the foam tape or trim it for a more finished appearance.