Sandblasting paint requires preparation, personal protection, and proper technique. Fine sand chips away at paint to reveal the surface, but nearby wood and sensitive materials should be covered. Protective eyewear and gloves are necessary, and blasting at an angle is recommended. Power washing should follow, and proper disposal of paint is important.
Sandblasting paint actually requires a few key steps, including preparation of surrounding unpainted surfaces, personal protection, and sandblasting technique. Power washing should also follow any sandblasting process. The treated surface must be free of paint before new paint is applied.
Most sandblasting paint projects are strictly outside jobs. Fine sand, such as silica, flows through an explosive machine to strike a targeted surface. These tiny grains of sand effectively chip away at small pieces of paint to reveal the underlying surface. All children and pets should be kept away from the surrounding area to avoid injury from the high speed sandblasting machine.
Since sandblasting paint requires a strong projectile sand force, any nearby wood surrounding the painted area should be covered with a tarp. For example, decorative wood ledges surrounding a stucco wall should be covered or they could become damaged during the sandblasting process. Any other sensitive material, such as television cable leads, should also be covered. High power sand can easily create dents and cracks in brittle materials.
Any project involving sandblasting paint should require the applicator to wear protective eyewear and gloves. The sand will hit the targeted surface at high speed; some of the sand and paint chips may bounce off the surface towards the applicator. It is good practice to stay to the side of the affected surface during application. Paint and grit residue can bounce in a different direction.
Proper technique is essential for sandblasting paint. The applicator should blast the surface at an angle; this will allow the sand grains to effectively peel the paint upwards. Front facing paint blasting will produce an indentation along the surface as all of the blasting power is directed at one focal point; the surface may need repairs if this technique is chosen improperly.
The sandblasting process normally uses water along with the sand; however, a thorough power wash after blasting will ensure that all paint and grit has been removed from the surface. Any grit residue or paint chips can prevent the new paint from adhering to the surface, but a clean surface should accept the paint easily. Sandblasting paint will make a big mess. As the paint is dry, it is legal to dispose of it in ordinary household waste. It’s good practice to ensure that all paint is disposed of properly so that animals, such as pets, do not ingest the tiny shavings.
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