Butyl Tape for Roofs and Waterproofing
Butyl rubber tapes never fully cure — they stay flexible and keep sealing the joint even as the structure expands and contracts through the seasons. That is why professional butyl tape is the standard solution for roof and facade sealing.
Roof waterproofing tape is used wherever water can get under the covering: at sheet overlaps, metal flashings, gutters and the ridge joint. Butyl tape with an aluminium facing also reflects heat and resists UV, so it works on exposed areas too.
Chimney sealing tape is a special case: around chimneys and roof penetrations the joint moves constantly and is exposed to large temperature swings. Butyl tape on a fleece or aluminium carrier lasts considerably longer here than mastic.
Alenor butyl tape range
- Alenor BF butyl tape (RAL 8017) 100 mm x 3 m
- Alenor roof ridge tape 310 mm x 5 m (RAL 8004)
- Alenor BF aluminum butyl multi-purpose tape 100 mm x 3 m
- Alenor butyl sealing cord
- Alenor K-2 double-sided butyl tape
- Alenor waterproofing butyl fleece tape
- Alenor Repair Patch repair patch 150x100mm
- ALENOR BF-FR reinforced butyl tape
See the full range of butyl tapes in the store →
Frequently Asked Questions
Which butyl tape should I use for a roof versus windows or metal?
For roof ridges and flat surfaces, Alenor BF butyl tape or ridge tape works best; for tricky details like pipes and corners, K-2 double-sided butyl tape or butyl cord adapts to irregular shapes.
Do butyl tapes withstand high and low temperatures?
Yes — Alenor butyl tapes stay flexible across a wide range, typically -30°C to +80°C, so they hold up on roofs and facades year-round.
How do I fix damaged waterproofing without replacing the whole roof?
For small damage or cracks, the Alenor Repair Patch works well — apply it directly over the damaged spot without extra tools for a fast, reliable fix.
Can butyl tape be applied to a wet or dusty surface?
No — for a proper bond, the surface needs to be clean, dry, and free of dust or oil residue. A wet or dirty surface significantly shortens the tape's service life.