With the Soudal sws Inside Extra butyl sealing membrane, you create a reliable airtight and vapour-inhibiting seal around interior window and door frame joints. You effectively block drafts and prevent warm indoor moisture from penetrating the insulation layer, protecting your building structure against condensation and mould. Thanks to the integrated self-adhesive strips, you apply the membrane quickly and firmly to both the frame and masonry without requiring additional adhesive. The synthetic fleece top layer can be plastered or pasted over immediately, keeping your interior finishing work on schedule. With a 250 mm width and a 30 m roll length, you achieve efficient and high-performance sealing.
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