防水剂的作用就是阻挡木质材料对水分的渗入和渗出(挥发更确切)，木质材料由于吸收水分而膨胀，会引起木质材料变形；木质材料由于水分的挥发而收缩，也会引起木质材料扭曲变形。
Waterproofing agent role is to stop the woodiness material of water infiltration and seepage (volatile rather), woodiness material expansion due to absorb moisture, and will cause woodiness material deformation; Woodiness material shrinkage due to evaporation of moisture, and can also cause woodiness material distortion.
有机硅防水剂是由甲基硅醇钠为基材，在水和二氧化碳作用下，生成甲基网状树脂膜(即防水膜)的一种憎水性防水剂。除了用于房屋防水，在石材防护中，有机硅防水剂 也发挥着重要作用。
Organosilicon waterproofing agent is composed of sodium methyl silicone glycol as the base material, under the effect of water and carbon dioxide, the methyl reticular resin film (that is, the waterproof membrane) of a hydrophobic waterproofing agent. In addition to building waterproof, in stone protection, organosilicon waterproofing agent also play an important role.
无机铝盐防水剂是以无机物为主体材料的水泥砂浆、混凝土防水剂。它以防水抗渗功能为主，同时兼有微膨胀、增加密实度功能，根据工程需要可配制成减水、缓凝和早强等型号。该防水剂防水效果好，施工简易，工程造价低廉，适用于砂浆、混凝土结构地下工程、水池、水塔、桥梁、涵洞、隧道、码头、堤坝水电站等东莞工程的刚性结构自身防水。
Inorganic waterproof agent is a inorganic aluminum salt as the main materials of cement mortar, concrete waterproofing agent. It is given priority to with function of waterproof impermeability, micro expansion concurrently at the same time, increasing the compactness of function, according to the needs of engineering can be made into water reducing, retarded and early strength model. The waterproofing agent waterproof effect is good, simple construction, low engineering cost, applicable to the cement mortar, concrete structure of underground engineering, pool, water towers, Bridges, culverts, tunnels, terminals, such as hydropower station dam construction project of rigid waterproof structure itself.