How to choose waterproof materials for home decoration?
防水涂料：属柔性材料，延伸性好，能应变结构变化大的部位（预制板屋顶等），多为石化制品。顾客必须花费比原来多出数倍的费用才能享受到同样的品质，否则就可能买到'Y'货。
Waterproof coating: It is a flexible material with good elongation and can change the structure of the parts (prefabricated roof, etc.), mostly petrochemical products. Customers have to spend several times more than they used to before they can enjoy the same quality, otherwise they may buy'Y'goods.
砂浆防水剂：属刚性材料，就成分而言，分为氧化铁类、无机铝盐类、有机硅类、高级脂肪酸类。氧化铁类：在施工后防水效果不稳定，已经被淘汰。无机铝盐类：渗透性较好，但呈酸性，对金属有腐蚀性，并降低水泥砂浆强度，易造成龟裂，正逐步被淘汰。高级脂肪酸类：耐久年限长，用其搅拌水泥砂浆，能使水泥砂浆的密度大幅度提高，并消除和填充、堵塞了水泥砂浆在凝固时产生的微小裂纹和毛细孔，使水泥砂浆层的整体形成水分子无法通过的永久性防水层，即只要水泥砂浆层不被破坏，防水效果就永在。一般为30年。其适用范围广，可在潮湿的基面施工，凡是水泥、砖、石建筑的构面，需要防水、防渗、防潮的部位，在迎水面和背水面均可采用。例如卫浴间、厨房等。
Mortar waterproofing agent: is a rigid material, in terms of composition, it can be divided into iron oxide, inorganic aluminium salts, organosilicon and high-grade fatty acids. Iron oxide: After construction, the waterproofing effect is unstable and has been eliminated. Inorganic aluminium salts: good permeability, but acidic, corrosive to metals, and reduce the strength of cement mortar, easy to cause cracks, is being phased out. Advanced fatty acids: long durability, mixing with cement mortar, can greatly improve the density of cement mortar, and eliminate and fill, plug the cement mortar in the solidification of micro-cracks and capillaries, so that the overall formation of water molecules can not pass through the permanent waterproof layer, that is, as long as the cement mortar layer is not destroyed, waterproof effect will be forever. It's usually 30 years. It has a wide range of applications and can be constructed on wet foundations. All facets of cement, brick and stone buildings need waterproof, seepage-proof and moisture-proof parts. It can be used on both water-facing and backwater surfaces. For example, bathroom, kitchen, etc.