Reworking 101: Easy methods to Revive Stained Concrete Flooring, Shade Version

I’ve lengthy liked concrete flooring. I like their zero-maintenance attraction, their industrial look that will get higher with time, and—although they work effectively with radiant underfloor heating (see our Reworking 101 on the subject)—I even like the sensation of a cool flooring underfoot, particularly when temperatures rise.

However I’ve not too long ago discovered a flaw in concrete flooring—one thing that had by no means occurred to me till I tried to remediate the state of affairs: In case your concrete flooring are stained, their colour is kind of actually “set.” In my residence, that’s an inconsistently utilized, dusty crimson. If you wish to change it, you’ll must put in both main cash or elbow grease.

To wade by way of the choices, I talked to Anthony Zamora of C Rock Ending in Oakland, California—right here’s what I realized.

San Francisco interior designer Nicole Hollis had new concrete floors poured in her 5,000-square-foot studio. For the rest of the space, see A Noirish Studio for a San Francisco Design Star. Photograph by Laure Joliet, courtesy of Nicole Hollis. Above: San Francisco inside designer Nicole Hollis had new concrete flooring poured in her 5,000-square-foot studio. For the remainder of the house, see A Noirish Studio for a San Francisco Design Star. {Photograph} by Laure Joliet, courtesy of Nicole Hollis.

How simple is it to vary the colour of stained concrete flooring?

Not very. “Concrete is sort of a large rock sponge,” Zamora says. “Earlier than it has something on it, it needs to take in every thing.” Which means that no matter has already been utilized to your concrete flooring has essentially modified the fabric and can have an effect on coloration going ahead. This can be a generalization, after all—however when flooring are “stained,” or extra precisely, handled with a penetrating sealant, the colour has been absorbed to an unknown depth.

To alter the colour, we’re overlaying the 2 commonest options right here: You may re-stain the flooring (by making use of a brand new penetrating sealant) or paint them (by making use of an industrial coating). Different choices embody staining after which sharpening your flooring (which achieves a special impact than simply re-staining) or overlaying them solely with a brand new materials, like a microtopping or concrete overlay.

In an early iteration of the office of SF-based fashion retailer Everlane (see their new space here), the existing concrete floors were re-covered with a new cement layer, a process called microtopping. For more, see Office Visit: The Everlane Studio in San Francisco. Photograph by June Kim, courtesy of Everlane. Above: In an early iteration of the workplace of SF-based trend retailer Everlane (see their new house right here), the present concrete flooring had been re-covered with a brand new cement layer, a course of referred to as microtopping. For extra, see Workplace Go to: The Everlane Studio in San Francisco. {Photograph} by June Kim, courtesy of Everlane.

How can I re-stain my concrete flooring?

To begin, you’ll must have the present floor mechanically floor down, each to prime the concrete to just accept a brand new stain and to take away as a lot of the offending colour as potential. “You may’t management how a lot stain permeated the concrete within the authentic course of,” Zamora says.It might be superficial and are available off pretty shortly, or it may have permeated as deeply as half an inch down, which implies it’s not going wherever. You’ll must mechanically grind your flooring to find out the next step.

When Seattle chef Matt Dillon remodeled a bathroom at his farm on Vashon Island, Washington, its concrete floor was preexisting but needed to be demoed when plumbing was added. Dillon and his contractor patched the floor and polished it with acid etching. See more in Bathroom of the Week: A Vintage Bath on Old Chaser Farm on Vashon Island, Washington. Photograph by Aaron Leitz for Remodelista. Above: When Seattle chef Matt Dillon reworked a rest room at his farm on Vashon Island, Washington, its concrete flooring was preexisting however wanted to be demoed when plumbing was added. Dillon and his contractor patched the ground and polished it with acid etching. See extra in Rest room of the Week: A Classic Tub on Outdated Chaser Farm on Vashon Island, Washington. {Photograph} by Aaron Leitz for Remodelista.

What does it imply to mechanically grind the concrete?

You want to use one thing more durable than concrete to be able to grind it down, explains Zamora, which often means a substrate like steel, ceramic, or resin that’s been impregnated with diamonds. “Diamonds are so sturdy that they’ll truly minimize up the floor of the concrete.”

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