Ib daim ntawv thov tseem ceeb rau Magnesium oxide siv rau kev tsim vaj tsev. Raws li cov khoom siv hauv vaj tse ib puag ncig, magnesia board muaj lub zog thiab tiv thaiv vim tias cov ntawv cog lus muaj zog ntawm cov hlau nplaum thiab oxygen atoms uas ua rau cov hlau nplaum oxide molecules (tshuaj cim MgO).
MgO Cam yog siv nyob rau hauv qhov chaw ntawm ib txwm gypsum phab ntsa ntub dej raws li phab ntsa thiab qab nthab npog cov khoom thiab sheathing. Nws kuj tseem siv ntau hauv lwm cov ntawv thov kev tsim kho xws li fascias, soffit, ncej-thaj thiab thaj chaw sib cais, phab ntsa sheathing, thiab raws li cov nplais rov qab (cov thaub qab lub rooj tsavxwm) lossis raws li txheej rau txheej txheej thiab cov kab hauv tsev xws li cov tshuab ua tiav, EIFS, thiab qee hom stucco.
