
Bostik
Sika 500ml Boom Expanding Foam Filler is a fast-curing polyurethane foam for filling gaps and voids, with good adhesion to most substrates for indoor and outdoor work.
It can be applied held upside down, which makes it easy to reach awkward spots when fitting window and door frames or insulating around pipes. Once cured it can be cut, sanded and painted. To use Sika Boom, shake the can well, fit the applicator and apply, allowing the foam to expand and fill the cavity before trimming back.
Sika 500ml Boom Expanding Foam Filler is a fast-curing expanding foam designed for filling gaps and voids in various applications, suitable for both indoor and outdoor use.
It provides good adhesion to most substrates and can be applied held upside down, making it ideal for installation tasks such as window and door frames and insulating around pipes. The foam can be cut, sanded and painted after curing.
Shake the can well, fit the applicator, then apply into the gap and let the foam expand to fill the cavity. Once cured it can be cut, sanded and painted.
It is recommended for windows, door frames and pipes, and suits filling gaps and voids indoors and outdoors.
Yes. It can be applied while held upside down, helping you reach awkward areas.
Yes. Once cured the foam can be cut, sanded and painted.
It is dry to touch in around 15 minutes.



