Paints - Tools

Sika Boom®-520 Low Expansion is polyurethane foam of controlled expansion for adaptations and fillings. Applied with a suitable gun, it is easy to apply, has a high performance and is reusable, 750ml.
Uses
Installation and insulation of door frames, windows, stairs
Fixing and sealing gaps, joints, cavities, connections
Filling of penetrations in walls, around air conditioning ducts
Insulation of electrical outlets and water pipes

Sika Boom®-521 FoamFix is a one component, highly limited expansion, rapid curing polyurethane foam applied by gun. It is particularly suitable for thermal insulation – thermal facade systems, 800ml.
Uses
Sika Boom®-521 FoamFix is particularly easy to use on plasterboards and the following insulating materials: Extruded Polystyrene (XPS) Styrofoam – Expanded Polystyrene (EPS) Boards, Fibreboards, Cork Boards, Polyurethane/Polyisocyanurate Boards
Also used for:
Installation of thermal insulation panels and filling of gaps created during the application of the glue, welding of wooden building materials to concrete, metals, etc.