Disadvantages & Drawbacks ntawm Galvanized Hlau Hlau Roofing

Tsis muaj substrate Warranty

Qhov teeb meem tseem ceeb tshaj plaws rau galvanized hlau tshuab yog tias lub substrate tsis muaj warranty. Feem ntau cov tshuab galvanized muaj peev xwm ua tsis tau rau ntau qhov chaw (nqaij ntug dej hiav txwv, dej noo siab, thiab lwm yam), txhais tau hais tias feem ntau cov tuam txhab tsis muaj kev lav phib xaub rau feem ntau cov khoom siv galvanized.

Qhov tsis muaj kev tiv thaiv substrate feem ntau yog vim li cas cov tswv cuab feem ntau xaiv Galvalume tshaj galvanized (rau kev siv, Sheffield Metals ' Galvalume cov khoom nqa 25.5- xyoo substrate warranty).

Txhim kho Liab Rust

Lub zinc txheej raugalvanized ntawv/ coil ua haujlwm zoo tiv thaiv cov tub ntxhais hlau rau thawj xyoo caum lossis siv ntau dua. Txawm li cas los xij, ib zaug ib feem ntawm cov tub ntxhais hlau raug nthuav tawm, cov hlau yuav pib xeb liab, uas yog ob qho tib si tsis pom thiab yuav noj tam sim ntawm cov hlau dhau sijhawm.

Tag nrho cov khoom steel inherently muaj ib co degree ntawm "ntug creep" nyob ze ntawm kev txiav thiab nthuav tawm npoo ntawm panels. Qhov teeb meem nrog cov hlau galvanized, pleev xim los yog tsis, yog tias thaum nws pib xeb liab, nws tsis nres. Cov xeb ntawm cov khoom siv galvanized yuav txuas ntxiv mus thiab ua kom nrawm dua.

Lub neej ntev

Cov kev tshawb fawb tau pom tias cov vov tsev hlau galvanized yuav nyob ib ncig ntawm 15-20 xyoo nyob rau hauv qhov chaw zoo. Qhov no yuav zoo li lub sijhawm ntev, tab sis koj yuav cia siab tias nws yuav kav ntev npaum li cas yog tias koj siv tib lub ru tsev lossis ntau dua rau lub ru tsev galvanized dua li lub ru tsev Galvalume. Txawm li cas los xij, Galvalume ru tsev tuaj yeem nyob tau 40+ xyoo, uas yog tshaj ob npaug ntawm lub neej ntawm lub ru tsev galvanized.

Tsis haum rau ntug hiav txwv ib puag ncig

Cov txheej txheej galvanized yuav tsis sawv ntsug raws li cov xwm txheej cuam tshuam nrog ib puag ncig ntawm ntug hiav txwv, nrog rau cov khoom tiv thaiv ntug hiav txwv nrog kev tawg nthwv dej, loj bays, thiab marshes. Tshwj xeeb, cov dej qab ntsev hauv huab cua yuav ua rau cov txheej txheem galvanized thiab ua rau lub ru tsev lossis phab ntsa puas thaum ntxov.

Peb pom zoo tias cov khoom nyob rau hauv ib qho kev ncua deb ntawm ib tug ntug dej hiav txwv siv ib tug engineered txhuas ru tsev system, raws li txhuas resists corrosion thiab rusting los ntawm cov dej ntsev ntev npaum li cas.

Roj Canning

Roj canning yog ib tug yam ntxwv ntawm lub teeb-gauge, txias-tsim hlau cov khoom, tshwj xeeb tshaj yog cov khoom nrog broad tiaj tus. Nws yog ib qho kev pom tshwm sim pom raws li waviness los yog distortion nyob rau hauv lub tiaj tus ntawm cov hlau panels. Luckily, roj canning tsuas yog ib qho kev txhawj xeeb zoo nkauj uas tsis cuam tshuam rau lub zog lossis kev ua haujlwm ntawm lub cev. Qhov no yog ua tau nrog txhua lub ru tsev hlau lossis phab ntsa, nrog rau galvanized.