Nrog rau cov vuas hloov pauv tau paub zoo, feem ntau cov khoom siv vov tsev tau muab tso rau ntawm lub ru tsev me me, uas tso cai rau kev tiv thaiv sab hauv los ntawm kev nkag mus ntawm noo noo. Tsis tas li ntawd, cov khoom siv no yog siv rau cov dej tsis muaj dej thiab lwm yam khoom siv. Tau ntau xyoo tam sim no, nws tau qhia nws tus kheej los ntawm sab zoo tshaj plaws, muab kev tiv thaiv kev ruaj ntseg ntawm tus nqi pheej yig. Tsis tas li ntawd, cov txheej txheem nteg tsis yog ib qho yooj yim mos vov tsev. Cov thev naus laus zis yog qhov yooj yim heev thiab txhim khu kev qha, yog li nws tuaj yeem txhim kho cov dej tsis zoo hauv lub sijhawm luv luv. Qhov tsis zoo suav nrog lub neej ua haujlwm tsis ntev thiab tsis muaj ntau txoj kev xaiv tsim.
Cov khoom siv vov tsev yog tau los ntawm impregnating qhov chaw ntawm cov ntawv tshwj xeeb nrog ntau yam bitumen. Cov khoom siv los npaj cov ntaub pua tsev vov tsev feem ntau muaj lub ntsej muag pem hauv ntej nrog ib txheej ntawm coarse-grained hnav khaub ncaws. Raws li txoj cai, lawv tsis siv rau hauv cov txheej txheem qis ntawm cov cua sov-insulating txheej. Raws li qhov dav ntawm lub canvas, nws tuaj yeem sib txawv kiag li. Txawm li cas los xij, yob los ntawm 750 txog 1050 hli feem ntau yog tsim. Thaum sib koom teskev ua nrog cov neeg siv khoom, cov chaw tsim khoom tuaj yeem hloov qhov ntev.
Hnub no, kev xav vov tsev tsuas yog ib qho ntawm ntau yam ntawm cov khoom siv vov tsev. Muaj ntau tshaj li rau caum yam khoom zoo sib xws. Txawm hais tias lub xeev ntawm cov xwm txheej no, lawv txhua tus muaj cov tshuaj lom neeg zoo sib xws thiab kev tsim khoom siv tshuab. Ib tug loj tus naj npawb ntawm cov vaj tse nyob thiab kev lag luam tsim nyob rau hauv lub xyoo tom qab tsov rog tsuas muaj xws li coatings. Lwm analogue ntawm vov tsev cov ntaub ntawv kuj proven nws tus kheej zoo. Rubemast yog cov khoom siv tsim khoom hauv cov yob. Qhov sib txawv tseem ceeb ntawm cov khoom saum toj no yog qhov muaj cov txheej txheem bitumen nyob hauv qab ntawm lub vev xaib.
Txawm hais tias cov cuab yeej siv vov tsev tau dhau los ua qhov nyuaj thiab thev naus laus zis ntau dua txhua xyoo, tsis muaj leej twg yuav tsis kam lees cov khoom siv vov tsev, vim qee qhov lawv siv yog qhov kev xaiv zoo tshaj plaws. Tsis tas li ntawd, hloov kho analogues thiab welded membranes tshwm sim txhua xyoo. Ntau ntxiv, fiberglass lossis hluavtaws yog siv los ua lub hauv paus. Qee tus neeg sawv cev ntawm cov khoom siv bituminous tau xyaum tsis siv.
Ib zaug ntawm lub khw muag khoom, lub vov tsev yuav tsum tsis txhob muaj qhov, tawg, quav thiab lwm yam tsis zoo. Ib tug protrusion ntawm qhov kawg ntawm yob ntawm ntau tshaj 15 hli yog tsis tso cai. Ib pawg raug tso cai siv tsis pub ntau tshaj tsib feem pua ntawm cov yob sib xyaw. Lub hauv paus cardboard yog impregnated tag nrho cov thickness ntawm lub canvas. ATcov khoom txiav yuav tsum muaj xim dub, tig mus rau xim av tint. Lub xub ntiag ntawm unimpregnated qhov chaw nyob rau saum npoo ntawm cov khoom yog tsis tso cai. Txhua yob muaj ib lub hnab ntim ntawm daim ntawv nrog qhov dav ntawm yam tsawg 500 hli. Kev kos npe yog ua los ntawm kev siv lub thwj tshwj xeeb uas qhia tus lej batch, tus qauv, xyoo ntawm kev tsim khoom thiab cov ntaub ntawv tsim khoom.
