砂(sha)巖(yan)(yan)壁畫的泥砂(sha)巖(yan)(yan)還(huan)具有(you)(you)類似塑(su)料的塑(su)變(bian)性(xing)(xing),更(geng)適合雕(diao)刻和(he)切出10mm厚(hou)的薄板,關于砂(sha)巖(yan)(yan)輕微的塑(su)變(bian)性(xing)(xing),現普遍(bian)認為(wei)是SiO2之間(jian)分子聯結,卻(que)又未形成結塊的緣故。砂(sha)巖(yan)(yan)的吸水(shui)率很大(da),一(yi)些(xie)品種幾乎是將(jiang)水(shui)倒上即滲入石材內,砂(sha)巖(yan)(yan)因其(qi)內部構造空隙率大(da)的特(te)性(xing)(xing),都有(you)(you)吸聲、吸潮(chao)、防(fang)火、亞(ya)光的特(te)性(xing)(xing),這種特(te)性(xing)(xing)的品種裝飾到具有(you)(you)吸聲要(yao)求的影劇(ju)院(yuan)、體育館、飯店(dian)等公共場所效(xiao)果十(shi)分理想,甚(shen)至可省(sheng)去吸聲板和(he)拉毛墻。