Hluav taws kub qhov rooj core board plays lub luag haujlwm zoo heev hauv qhov rooj hluav taws, thiab tuaj yeem pab peb ncua sijhawm yog tias muaj hluav taws. Hluav taws kub qhov rooj cores yog cov khoom xws li pob zeb wool, aluminium silicate wool, nthuav perlite, thiab lwm yam. Nws yog ntuj thiab ib puag ncig tus phooj ywg, tsis muaj tshuaj lom thiab tsis muaj hluav taws xob, thiab qee qhov yog kim, thiab lawv cov khoom siv hluav taws xob ntau.