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homeguides.sfgate.com/long-should-shower-tile-grout-dry...

Cement-Based and Premixed Grout. Cement-based grout and premixed varieties require generally the same amount of curing time. Both are subject to variation depending on the brand and environmental ...

www.hunker.com/.../how-long-do-you-wait-before-sealing-grout

Let the grout cure for 48 to 72 hours; Wait two hours after sealing before allowing foot traffic -- and apply two coats of sealer for light-colored grouts; Wait 12 hours before contact with water. Full cure, when the sealant dries out completely, may take 24 hours.

www.wikihow.com/Seal-Grout

Allow new grout to cure for 48 to 72 hours before sealing. Existing grout should be cleaned and dried before resealing. Make sure grout lines aren't cracked, chipped, or otherwise compromised before treating with a sealant. If they are, touch up grout and wait the requisite 48 to 72 hours before sealing.

www.reference.com/home-garden/long-should-grout-cure...

According to Grout Masters, cement-based or sanded grout made from rock particulate requires 48 hours of curing time. In contrast, epoxy grout, made from resin, does not require sealer. Instead, it needs approximately two weeks of curing time before it can be cleaned with chemicals or used in a humid area, such as a shower.

diy.stackexchange.com/questions/2350/can-i-use-my-shower...

I think there's a semantic difference between "drying" and "curing" - I waited over 24 hours before I even touched the repair to ensure it was dry, but was more curious if it would have been ok to wet the grout prior to sealing (in the 7 day "cure time"). Thanks! – kkeilman Oct 28 '10 at 23:59

countrycustomtile.com/sealing.html

Sealing the grout is an extremely helpful addition to a tile and cement grout installation. Sealing will greatly improve the resistance of the grout to staining and discoloration and it reduces the overall maintenance. Many times questions are asked about the cure time required before sealing the grout and the type of sealer that should be used ...

www.mapei.com/public/US/linedocument/IG_Tile_Installation...

• Grout joints should have at least two-thirds of the tile thickness clear for application of the grouting material. • Avoid disturbing or walking on tiles. • Follow the setting material manufacturer’s directions on curing time before grouting. Curing or drying times will vary due to temperature, humidity and porosity of tile and

homeguides.sfgate.com/long-wait-after-grouting-shower...

Even though your shower grout looks dry, using it too early or sealing it before it's ready may damage it, leading to premature failure. Most cement-based grouts require a cure time of 48 to 72 ...

www.custombuildingproducts.com/support/frequently-asked...

What is the difference between a penetrating sealer and a finishing sealer? Penetrating sealers act as an invisible barrier to stains by penetrating the surface of grout and porous tile. TileLab's SurfaceGard and Grout Sealer are penetrating sealers that provide a natural look for any unglazed tile or grout.

www.homedepot.com/c/ah/how-to-grout-tile/9ba683603be9fa...

Spread the sealer with a small paintbrush or a sealer applicator. Clean off any smears within the first five minutes. Then let the grout dry for at least 24 hours.Let the grout dry for the length of time recommended by the manufacturer before applying sealer. Spread the sealer with a small paintbrush or a sealer applicator.