SWS Inside Extra is a high-performance, flexible, self-adhesive foil designed for vapor-inhibiting and airtight sealing around windows, doors, and wall connections in interior applications. With dual adhesive zones—one for securing to the window profile and another for full-surface bonding to the structure—it offers quick, clean, and secure installation. The tear-resistant synthetic fleece layer allows for immediate plastering or bonding, saving time and ensuring a seamless finish. SWS Inside Extra is part of the Soudal Window System (SWS) and fully compliant with DIN 4108 and RAL installation guidelines.
Key Features:
-
Airtight & Vapor-Retardant: Ensures energy efficiency by preventing air leakage and vapor transmission.
-
Dual Self-Adhesive Design: Pressure-sensitive adhesives on both sides for fast and reliable installation.
-
Plaster-Ready Surface: Can be immediately plastered or pasted over without additional prep.
-
Easy to Install: Tear-resistant, flexible, and pre-slit liner options make corner folding and handling simple.
For more sealants, please click here. For our full range of Soudal products, please click here.
For more information, please visit the Soudal website.













Reviews
There are no reviews yet.