Hlau qhov rooj kho kom zoo nkauj yog ib hom tshiab ntawm cov khoom siv kho kom zoo nkauj hauv tsev, uas yog siv dav hauv kev tsim kho vaj tse, ntu, qab nthab, tshav ntuj, sam thiaj thiab chaw ncig, cov menyuam qhov muag tsis pom kev, ntaiv, thiab tshav dav hlau, chaw nres tsheb, tsev so, tsev cia puav pheej, tsev ua yeeb yaj kiab, nkauj paj nruag High- xaus rau sab hauv thiab sab nrauv kho kom zoo nkauj ntawm cov tsev, chaw ua haujlwm hauv tsev, chaw ua yeeb yam, khw khw, thiab lwm yam.
Thaum hlau cov hlau kho kom zoo nkauj siv rau hauv kev tsim kho kom zoo nkauj rau sab nraud cov kab hlau rhuav phab ntsa, vim nws qhov tshwj xeeb tsis ruaj khov ntawm nws cov ntaub ntawv hlau, nws tuaj yeem tiv thaiv qhov ntxeem tau ntawm cov huab cua tsis zoo xws li cua daj cua dub, thiab nws yooj yim los tswj. Los ntawm cov tswv yim ntshiab ornamental, cov hlau ntxaij Nws muaj cov yam ntxwv ntawm cov ntuab kab npuag thiab muab cov neeg pom kev lom zem. Thaum siv los ua lub ru tsev sab hauv lossis phab ntsa muab faib, cov khoom siv tshwj xeeb permeability thiab gloss muab qhov chaw muaj kev zoo nkauj dua.
Cov khoom siv ntoo ua kom zoo nkauj feem ntau yog siv hauv chav ua yeeb yam, tsev so, teeb tsa kev tshuaj ntsuam hauv chav ua si kom zoo nkauj, chav ua haujlwm siab, chav nplua nuj, chav ua lag luam, thiab cov khw loj.