what is epoxy grout used for

what is epoxy grout used for

The Goal of Grout

When grout does its job — locking tiles tight, protecting out water, and giving flooring and partitions a completed look — no one pays a lot consideration. It is solely when grout fails, turning into stained, cracked, or falling out altogether, that folks take discover.

However grout deserves extra respect. “Not solely does grout fill the voids, it makes the ground, wall, or countertop stronger by bonding the tiles collectively and stopping the sides of a tile from chipping and cracking,” says David Goodman, the tile contractor for This Outdated Home’s Nantucket venture.

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Right here’s all the things you want to learn about grout: from the differing types, sealing and shade choices and methods to restore.

Cement-based Grout

Grout is available in two primary varieties, and the selection of which one to make use of relies upon not on the tiles however on the width of the joints between them. Slender joints of 1/8 inch or much less name for unsanded grout, a pudding-smooth mix of Portland cement and powdered pigments blended with water. Joints wider than 1/8 inch get sanded grout — the identical materials, however with sand added. The sand helps bulk up the grout and retains it from shrinking within the joints.

Three many years in the past, when he began within the enterprise, Goodman says, “we might simply add powdered grout to a bucket of water and away we might go.” However older cement-based grout was brittle and liable to cracking. It additionally dried irregularly, leaving colours inconsistent. Right now’s grouts use polymer components, which guarantee shade high quality and elevated flexibility, permitting for joint widths of as much as 1 1/4 inches. These extensive joints come in useful for camouflaging irregularities in handmade tiles and for bridging the various thicknesses of tile in some patterned installations.

Regardless of their improved efficiency, nevertheless, all cementitious grouts are porous and topic to staining. That is why producers and installers suggest sealing grout after it has cured for a few days and is totally dry.

Grout Sealers

Grout sealers are available two varieties: membrane-forming and penetrating. The primary sort is liable to peeling or getting cloudy when residual moisture from mastic or underlayments pushes to the floor of the tile. Penetrating sealers, which nonetheless breathe after soaking into tile and grout, are preferable.

Goodman generally invitations prospects to avoid wasting on labor prices by sealing the grout themselves. “I give them some cotton swabs or a disposable brush, together with a can of sealer, and make them promise me they will end the job.”

Epoxy Grout
Epoxy grout is costlier and harder to use, however its sturdiness makes it a good selection for high-traffic areas.
Picture by John Lawton

Epoxy Grout

There are some settings — notably these uncovered to acids and greases — by which even an additive-enhanced, sealed grout falls quick. Such harsh situations name for epoxy grout. Made up of two components, resin and hardener, epoxy grout is available in each sanded and unsanded varieties and is impervious to most chemical compounds and stains. Early epoxies had been unforgiving and tough to use, and had only a 45-minute pot life. This made them quick to treatment however gradual to be embraced by many tile setters, and anathema to freshmen.

The brand new technology of epoxies comprise detergents within the hardeners, which make for fast cleanup with water and enhance workability. As a result of epoxy can discolor porous surfaces, resembling unglazed quarry tiles or limestone, these must be sealed earlier than grouting. However its stain resistance, hardness, and sturdiness make epoxy grout your best option for showers, kitchen counters, backsplashes, flooring, and different heavy-traffic areas.

Is Epoxy Grout Extra Costly?

Sure, epoxy grout is costlier — as a lot as $8 per pound, in contrast with $1 to $2 for cement-based grout — however there may be an upside to the price distinction: Powdered Portland cement grouts have a shelf lifetime of just one yr, whereas two-part liquid epoxies, if they don’t seem to be subjected to freezing temperatures, will final without end of their sealed containers.

Grout Colors
Selecting very completely different tile and grout colours can present a placing distinction.
Picture by John Lawton

Grout Colours

In terms of grout shade, there are three approaches: contrasting (say, white grout with black tile), harmonizing (inexperienced grout with inexperienced tile), or impartial (a shade of grey or white). Whereas it may be tempting to go together with an eye-popping mixture, David Goodman tries to steer his purchasers towards the impartial choice. “You is probably not head over heels in love with grey,” he says, “however likelihood is you will not hate it, both.”

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In case you do select a daring shade, grout up a pattern part of tile on plywood and dwell with it for a couple of days. “I inform individuals to take a look at the colour in a lot of completely different lights — pure, incandescent, fluorescent,” Goodman says. In case you make a mistake, unsealed cementitious grout could be stained or painted after it cures (sealed or epoxy grouts must be eliminated). “Nonetheless, it is a fairly tedious process,” Goodman says, “so why not make the fitting alternative the primary time?”

Grout Cleaning
Worn and blackened, the grout on a kitchen counter and backsplash first will get a dose of highly effective degreaser. “By no means clear tile and grout with an oil-based cleaning soap,” Parker says. “The wax in them builds up and stains grout.”
Picture by John Lawton

Grout Cleansing Options

Years of meals and grease stains can penetrate surfaces, leaving darkish grout. In excessive instances, the one treatment could also be to regrout or retile, however most of the time, outdated grout could be renewed. All it takes is a degreasing agent, a stiff-bristle brush or business steam cleaner, and elbow grease. Some spot regrouting is normally crucial — a course of that includes digging out and changing cracked or crumbled areas.

Debby Parker, who does enterprise as The Tile Woman, has been within the trade for 25 years. In a number of hours, she and her husband, Roger Thorp, restored the drained grout on this Sacramento, California, kitchen.

Grout Steam Cleaner
A steam cleaner brings stains to the floor, the place Parker and Thorp wipe them up. Owners can lease steam machines, however a stiff-bristle nylon brush and a degreaser additionally do the trick.
Picture by John Lawton

Grout Contractor Companies

Tile contractors

David Goodman

Nantucket, MA


The Tile Woman

Debbie Parker

Citrus Heights, CA


Jan MacLatchie

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Creative Tile

New York, NY




Customized Constructing Merchandise

Seal Seashore, CA


Our because of

Todd Sturm

normal contractor

New York, NY


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