Sandblasting concrete: a popular and practical finish
Learn how sand and pressurized air can transform concrete
Sandblasting: practical, popular, and trendy in the world of concrete. And who do we have to thank for it? General Benjamin Chew Tilghman! After a stint in the army stationed him in the desert, Mr. Tilghman noticed the effects sand had on windows. This inspired him to create and patent the sandblasting process around 1870 with a simple device. Over 100 years later, modern concrete pros have refined his invention into the method we use today.
Join us as we cover some of the most common questions about sandblasting concrete here:
What is sandblasting concrete?
It’s an abrasive form of blasting using highly pressurized air and sand (among other things) to clean or polish a concrete surface.
Why should you sandblast concrete?
If you want to give new concrete a polished and refined look, sandblasting is for you. It’s also a sustainable way to restore and reuse old concrete. Because it blasts away the older, crumbling, top layer of concrete, the end result is a stronger product.
What projects is it good for?
It’s perfect for kitchen countertops, floors, and objects like garden benches made of concrete. Or you can revive an old concrete patio with sandblasting.
Can sandblasting remove paint and graffiti?
In short, yes! If you want to avoid chemical stripping agents, sandblasting is a great alternative. It eliminates both paint and graffiti. The process can also rid concrete surfaces of mold, mildew, dust, and algae.
Can sandblasting create decorative patterns?
One of the biggest draws of using sandblasting on concrete is its ability to create intricate designs by using stencils. While the options are limitless, many people use this process to etch logos, borders, and patterns on concrete. Stenciling should be done after 28 days, when the concrete is fully cured.
How do you care for it?
Once your project is complete, your concrete will need a little TLC. Use a solvent-based sealer to protect it and give it a high-gloss finish. Since concrete is a porous surface, it’ll benefit from regular power-washing as well.
How to prepare an area for sandblasting
First, remove any easily damaged and valuable items from the work site. Once the area is clear, do a small test in an inconspicuous area. For safety reasons, make sure to also have a HEPA-filtered vacuum standing by to remove the dust and waste from the site immediately.
Safety
If you’re starting a concrete sandblasting project, it’s critical to wear the right gear. Sandblasting can create hazardous dust, so ensure you’re outfitted with PPE like goggles, respirators, and protective clothing. Always work in a place with good ventilation. Keep children and pets away from the job site at all times.
Get Started
Because our team only provides the materials, don’t forget to hire another trusted professional to do the concrete pouring and sandblasting.
Feeling inspired? Mathews Readymix can provide you with the materials you need for your next project! Contact us and we’ll help you out.