Varidzi vazhinji mukuvaka imba yesimbi yakareruka, makambani mazhinji anoratidza kuti denga rinoshandiswamatanda easphalt, muridzi weimba anonyanya kunetseka nezvedambudziko iri nderokuti hupenyu hwema shingles easphalt hunogara kwenguva yakareba sei?

Zvakanakira zvekuvaka shingles dzeasphalt mutengo wakaderera uye nyore zviri pachena, asi kana nguva yekushanda kwe shingles dzeasphalt iri pfupi zvakanyanya, kugadzirisa kunonoka kunonetsa zvikuru, asi kunowedzera kuoma kwemutengo wekuvaka nekuvaka.

Kutaura zvazviri, shingles dzeasphalt dzakagadzirwa pakutanga kuti dzishandiswe mudzimba dzemapuranga. Nekuti hupenyu hweimba yemapuranga pachayo hupfupi, uye simba rekutakura harina simba, saka mhando yeshingle yakatetepa inodiwa, shingle yeasphalt yakabuda panguva yenhoroondo, panzvimbo pejira rekutanga re linoleum, yakava sarudzo yakanakisa yedenga reimba yemapuranga.

Kusvika pari zvino, machira easphalt ave aripo kwemakore anopfuura makumi matanhatu, mushure memakore anopfuura makumi matanhatu ekuvandudzwa, zvese zvine chekuita nemachira easphalt zvavandudzwa, shanduko iri pachena ndeyekuti machira easphalt ane mwero wenyika.

Masherufu easphalt akagadzirwa zvichienderana nemitemo yenyika, hupenyu hwebasa remasherufu easphalt imwe chete hunogona kuvimbiswa kwemakore makumi maviri, hupenyu hwebasa remasherufu easphalt maviri hunogona kuvimbiswa kwemakore makumi matatu.

Nguva yekushanda haisati yakwana seyemataira echinyakare, ayo ane chokwadi chekuti anogara kwemakore makumi mashanu. Asi padanho riripo rekuvandudzwa kwemaguta nekugara kwekuvaka muChina, makore makumi matatu ekuisa matanda easphalt akakwana kukwana muzvivakwa zvakawanda. Saka mumakore gumi apfuura, kushandiswa kwematanda easphalt kwave kwakakura kwazvo, denga rese rakatsetseka, kune zviitiko zvekushandiswa kwematanda easphalt.

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