Cavity Closer Product Range Cavalok System BigBlok System Economy Range Cavalok Cavity Closers (also known as cavity closures) have become a critical and compulsory building component used in all new-build projects to seal apertures in cavity walls. Our range focuses on rigid, frame-forming cavity closers which combine several essential features into just one product.

SAVE ENERGY- Dramatically speed-up and improve bricklaying by using the pre-made cavity frame as a template, guaranteeing the opening size.
SAVE ENERGY - Fit windows in seconds with the window acceptor features and accessories of our systems.
SAVE ENERGY - Integrate the closing of the cavity and DPC into the building process from the beginning.
SAVE ENERGY - Enhance CO2 emission performance with the thermal break and secure insulation created by a Cavalok closed wall junction.