Ndani akudziwa kuti zipangizo zomangira si zotsika mtengo, zopangira bituminous shingles ambiri, choncho ndi wa mtengo sing'anga pa msika, ndipo mtengo wa bituminous shingles si mkulu, zomwe zimagwirizana ndi ndalama Madivelopa ndi ogula, choncho chimagwiritsidwa ntchito msika wathu.

Chachiwiri, zosiyanasiyana mankhwala

Zinthu kwa nthawi yayitali zipangitsa kuti anthu azitopa kwambiri, komanso zinthu zambiri zamtundu wa asphalt shingle, mtundu wazogulitsa umakhala wolemera kwambiri, ndipo pali mbiri yokongola, kotero ogula amakhala ndi zosankha zambiri za asphalt shingle.

Katatu, khalidwe la mankhwala

kampani utenga galasi CHIKWANGWANI, kutentha sintered mchenga, mkulu-kalasi msewu phula ndi zipangizo zina zopangira, kukonzedwa, angatchedwe wotchipa ndi zabwino, ndipo ali ndi madzi, kuteteza kutentha, kutchinjiriza phokoso ndi makhalidwe ena, okondedwa ndi ogula, moyo wake utumiki akhoza kufika zaka zoposa 30, ndi wa kuwala denga zipangizo zomangira, kuchepetsa kwambiri kulemera kwa denga.