HS Butyl 0421

• Bitumen-free.
• Easy to use with good adhesion to most building substrates.
• Permanently flexible.
• Non-shrinking.

Surface preparation

• All surfaces should be clean, dry, and free from frost, grease, and loose materials.

• When cleaning contaminated substrates, HS Butyl recommends using propan-2-ol (IPA) and allowing it to dry before applying the butyl tape.

Application

• Apply directly from the reel onto one surface and press along its entire length to ensure good initial adhesion.

• Overlap the tape ends to ensure a good seal and compress.

• Remove the backing paper, position the other surface onto the sealant, and push firmly to seal across the joint.

• Spacers may be inserted into the tape to prevent over-compression.

Sealing concrete caisson rings, box culverts, manhole sections.

HS Butyl 0421 is normally supplied as an extruded strip on a siliconised release paper. A wide range of dimensions can be supplied. Product dimensions will determine the number of rolls per carton.

24 months when stored flat in original packaging in cool, dry conditions.