Qhov saum npoo ntawm lub qhov rooj hluav taws yuav tsum yog du thiab huv, tsis muaj qhov pom tseeb dents lossis kev puas tsuaj rau txhua yam. Qhov vuam ntawm lub qhov rooj hluav taws yuav tsum ruaj khov, cov pob qij txha yuav tsum sib npaug sib npaug, thiab yuav tsum tsis txhob muaj kev sib tsoo tsis zoo, kub hnyiab, tawg ntawm vuam, thiab lwm yam. Cov seam yuav tsum ruaj thiab du, thiab cov plywood yuav tsum tsis txhob muaj kev sib tsoo. tau npaj los ntawm qhov chaw veneer.