How To Sandblast Concrete Walls

When blasting a surface the operator should hold the nozzle perpendicular to the surface and about 2 feet away.

How to sandblast concrete walls. Hold the tip of the sprayer 8 to 16 inches away from your body and point it at the concrete. Concrete walls brick walls wood beams antique cars heavy equipment brick paint removal graffiti removal marina municipalities stamped concrete pools log homes residential construction equipment fire restoration and much more. Sandblasting is used in various ways. While the process is relatively simple the prep work is labor intensive.

Adjust the pressure upward to a maximum of 100 psi until the sand cleans the concrete when you hold the nozzle about 12 inches from it. The restoration of concrete to its original condition therefore requires a heavy blast removal of cement in the built up areas and a whip blast to achieve an exposed aggregate concrete finish. The concrete matrix will be easier to cut in the first 24 to 72 hours after casting. The surface you re blasting isn t uniform in strength so you ll wind up w holes all over the f n place get an aurand deck scaler if you must or attach frp panels to the wall.

Turn on the compressor and adjust the pressure to 40 to 50 psi. Depress the trigger to begin sandblasting. The first step is producing a smooth finish concrete surface as per regular smooth finish concrete technique. The exact distance depends on the pressure being used the hardness of the concrete matrix and the cutting ability of the abrasive.

Sandblasting is a method to texture the surface of hardened concrete on patio walls columns driveways floors to remove paint or expose aggregates. If you want to ruin either conc or cinder blks sandblast em won t make an difference what media you select corn cobs talc 00 sand glass beads walnut shells etc. The extent of sand blasting ranges from light cleaning to a deep cutting operation that exposes aggregates to around 2 cm. Regular sandblast finish concrete is a multi stage technique in which the final finished surface resembles that of a limestone.

It can remove paint from stucco and other textured structures rejuvenate concrete and bring back the original look of brick pebbles or other rock designs.