Reliable exterior weatherproofing for building joints
- Proven Soudal weather protection: You create a reliable driving rain and airtight seal around exterior window frames and façade joints.
- Full surface self-adhesive backing: You install the membrane quickly and securely on the building substrate without needing extra adhesive.
- Immediately ready for plastering: Thanks to the soft synthetic fleece, you can plaster or render directly over the installed tape.
With the Soudal sws Outside Extra sealing tape, you create a dependable weather barrier around exterior window and door joints that keeps out driving rain and wind. This 200 mm wide membrane establishes an airtight and vapour-permeable seal, eliminating drafts and protecting surrounding insulation from moisture damage. Thanks to its full-surface self-adhesive backing, you can install the 30 m roll quickly and securely onto masonry without requiring additional adhesive. The soft synthetic fleece surface allows you to plaster directly over the joint or finish it with external wall insulation, giving you a clean, durable seal on any construction or renovation job.