本主题包括与施工过程中安装背衬条信息。贝克棒轮执行从开孔或闭孔泡沫材料制成,接头密封件。它们被类似或不同的建筑材料之间的接缝之内用于填充接头或间隙。A sealant is typically applied to open cell backer rods to prevent air or moisture infiltration, closed cell backer rods inherently deter air and moisture.