Leej twg paub tias cov ntaub ntawv siv hauv tsev tsis pheej yig, cov khoom siv raw ntawm bituminous shingles yog dav dav, yog li nws yog tus nqi nruab nrab hauv kev ua lag luam, thiab tus nqi ntawm bituminous shingles tsis siab, uas haum rau kev nqis peev ntawm cov neeg tsim khoom thiab cov neeg siv khoom, yog li nws tau siv dav hauv peb lub khw.

Qhov thib ob, ntau yam khoom

Cov khoom siv ntev yuav ua rau tib neeg pom kev qaug zog, thiab ntau yam khoom siv asphalt shingle, xim ntawm cov khoom nplua nuj dua, thiab muaj lub koob npe nrov, yog li cov neeg siv khoom muaj ntau thiab ntau txoj kev xaiv rau asphalt shingle.

Peb, qhov zoo ntawm cov khoom

Lub tuam txhab siv cov iav fiber, cov xuab zeb sintered kub siab, txoj kev asphalt qib siab thiab lwm yam khoom siv raw, ua tiav, tuaj yeem hu ua pheej yig thiab zoo, thiab muaj dej tsis nkag, khaws cia kub, rwb thaiv tsev suab thiab lwm yam ntxwv, nyiam los ntawm cov neeg siv khoom, nws lub neej kev pabcuam tuaj yeem ncav cuag ntau dua 30 xyoo, yog cov khoom siv lub ru tsev sib dua, txo qhov hnyav ntawm lub ru tsev.