Qhov zoo ntawm tus nqi qis thiab yooj yim tsim cov vuas asphalt yog qhov pom tseeb, tab sis yog tias lub neej ua haujlwm ntawm cov vuas asphalt luv dhau, kev saib xyuas lig yog qhov teeb meem heev, tab sis ua rau muaj teeb meem ntawm kev tsim kho thiab tus nqi tsim kho.

Qhov tseeb, lub hom phiaj thawj zaug ntawm kev tsim cov vuas asphalt yog rau kev tsim tsev ntoo. Vim tias lub neej ntawm lub tsev me me luv luv, thiab lub peev xwm thauj khoom tsis muaj zog, yog li qhov xav tau cov vuas sib dua thiab nyias, cov vuas asphalt tau tshwm sim thaum lub sijhawm keeb kwm, es tsis txhob siv cov ntaub linoleum qub, dhau los ua qhov kev xaiv zoo tshaj plaws rau lub ru tsev ntawm lub tsev me.

Txog rau tam sim no, cov vuas asphalt tau muaj ntau tshaj 60 xyoo, tom qab ntau tshaj 60 xyoo ntawm kev txhim kho, txhua yam ntawm cov vuas asphalt tau zoo dua, qhov kev hloov pauv pom tseeb tshaj plaws yog tias cov vuas asphalt muaj cov qauv hauv tebchaws.

Ua raws li lub teb chaws tus qauv tsim cov vuas asphalt, lub neej ua haujlwm ntawm ib txheej ntawm cov vuas asphalt tuaj yeem lav 20 xyoo ntawm lub neej, lub neej ua haujlwm ntawm ob txheej ntawm cov vuas asphalt tuaj yeem lav 30 xyoo.

Qhov ntawd tseem tsis ntev npaum li cov vuas ib txwm muaj, uas tuaj yeem kav ntev txog 50 xyoo. Tab sis raws li Tuam Tshoj txoj kev loj hlob hauv nroog thiab lub neej tsim kho tam sim no, lub neej ua haujlwm ntawm cov asphalt shingles ntawm 30 xyoo txaus kom phim feem ntau lub tsev. Yog li ntawd, nyob rau 10 xyoo dhau los, qhov ntau thiab tsawg ntawm kev siv cov vuas asphalt tau dav heev, txhua tus muaj lub ru tsev nqes hav, muaj cov xwm txheej ntawm kev siv cov vuas asphalt.

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