Foam Sealant SikaBoom 557 All-Season

Sika Boom®‑557 is a one‑component, polyurethane, expanding foam for year‑round use (temperatures between -10°C and +30°C). Free from chlorinated paraffins and halogens. Can be applied to cold substrates at low temperatures. Forms a homogeneous foam structure even at low relative humidity. Once cured, the foam can be cut, sanded, and painted. Suitable for indoor and outdoor use.