The main goal of sandstone repair is to retain the originality of the existing stone as possible. At times this is not possible when you use materials that are not standard. You should use materials that will not be destroyed a short time after their application. Also there is a specific procedure that should be followed during sandstone repair. The main part when repairing sandstone is to understand the history behind that stone. You should know the make and the cause of damage or decay when you understand the cause of the damage you will be able to repair the stone permanently.
Sandstone is made of particles known as quartz. These particles are not easily affected by weather. But sometimes the size of the particles matters. Particles making sandstone can be attacked by alkaline milk. This means that the cause of decay may always not be weather causes it may also be caused by chemicals. The method of repairing sandstone hence lies on understanding the components of the sandstone and the cause of damage. Sandstone is susceptible to staining. They can be affected by the weather and permanently change their color.
Repair of sandstone.
There are different methods of repairing sandstone. After understanding the material component of the stone then you can start the process of repairing it. There is a method of sandstone repair that is known as conventional repair. This you take the stone and clear out the decayed part. This part may contain crystalized salt. You clear the unwanted part until you are left with sandstone only. This method however leads to loss of great material of the sandstone. This is because you cut out great chunks of sandstone together with the destroyed parts.
Another type of sandstone repair is the hydraulic lime repair. This consists of cleaning out the part that you want to repair. With this method you will lose less of the sandstone. To repair part you only need t to clean it up. You then dress up the part of the stone that you want to repair. This kind of method preserves the stone.
Another method of sandstone repair is called plastic repair. This method is mostly used when decay is occurring around the joints. The main aim here is to prevent water penetration. It was discovered that when it rained water entered into these joints. This water the n started causing decay to that part of the stone. To prevent this kind of damage water was trapped before entering these joints.
How to clean sand stone before repairing it.
There are different methods that exist to clean sandstone. Among the methods used is use of chemical and air agents to clean sandstone. Chemical method is often discouraged as it is sometimes to strong and don’t have good neutralization effect. The other method that is used to clean the sandstone is by the use of steam or water. These materials are safe and they effectively remove all the unwanted particles
