Soudatight SP is a high-quality water-based polymer paste which, after drying, forms a seamless, airtight and vapour-retardant elastic membrane.

This product allows for a very easy, fast and economical application on larger surface areas and connections in between those surfaces (floor to wall, wall to ceiling, etc). Soudatight SP forms an elastic, air- and vapour tight membrane after drying and is an ideal basis for paint or plaster. Combine with Soudatight LQ for optimal results. Soudatight SP can be applied with a professional airless spraying tools, such as an airless gun connected to either a plunger or a membrane pump.

Features and benefits:

Air- and vapour tight.
Radon barrier.
Stays elastic after curing and very sustainable.
Forms a seamless membrane.
Very good adhesion on many porous materials.
Good adhesion on slightly moist substrates.
Good adhesion on slightly dusty substrates.
Can be painted, plastered or taped after drying.
Meets GEV EMICODE EC-1 PLUS: very low emission.
Passive House certified.
M1 emission label.
ecobau certified: eco-1 label.

Passivhaus Certified Component