How Do You Use Muriatic Acid To Etch Cement Blocks?
Etching concrete blocks with muriatic acid provides a surface that your topcoat can adhere to. The acid roughens the surface of your blocks to create a stronger bond between the blocks and your topcoat. Muriatic acid is an extremely volatile chemical and caution must be exercised to ensure your safety. Mix 1 part muriatic acid to 10 parts water in your 5-gallon bucket. Water must be added to your bucket first, and then the muriatic acid. If you pour water into muriatic acid, it can explode. Use your wooden stir stick to mix your solution. Water down all grassy areas you are working in. Water will keep the acid from burning your grass. Dip your scrub brush into your acid solution and brush it onto the surface of your blocks. The acid solution should start bubbling when it comes in contact with the concrete. If your solution does not bubble, add more acid to your water in small amounts at a time. Apply acid to all surfaces of the concrete blocks that you need etched. Allow the acid solut
