Sandstone is not waterproof, to install, there is a way to do it?
Upstairs say varieties still have a certain reason, after all, the sandstone composition is not the same, but it is not without problems, the time length, difference frequency and time interval. The protective properties of stability, properties of iron containing alkali containing less stable point
However, it should be done to do, after all, if you do not do the problem will be greater, it is recommended to do a good jobSandstone is to rely on the protection of the early, followed by the maintenance of the late look, regular cleaning protection is very important
Now do a lot of waterproof effectEven if the water will be changed to change the color of the sandstone, but relatively slow,You can only do waterproof surface waterproof, no way to do six waterproofSo other surfaces that are not protected are easily oxidized and contaminatedAnd if you're not using dry hanging, but wet paste with cement, then the problem is more obvious
