subject: Contribute Towards A Green Future by Fitting uPVC Windows [print this page] For more information on fitting uPVC windows, visit http://www.cavalok.com. Cavalok Building Products is a leading manufacturer of cavity closers and insulated window templates. Mastering the science and art of manufacturing cavity closers, Cavalok has developed innovative products that provide a thermal break from the external environment. Approved by the British Board of Agrment (BBA) and the National House Building Council (NHBC), Cavalok provides building insulation material to leading UK builders and installers.
Contribute Towards A Green Future by Fitting uPVC Windows