MAPEI Keracaulk S 10.5-oz Pearl Gray Sanded Paintable Latex Caulk
Item #290706 |
Model #31910
For caulking around sinks, tubs, showers, countertops and ceramic tile floors
Use where horizontal and vertical surfaces meet
For gaps up to 1/4-in
This item is no longer sold on Lowes.com
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For caulking around sinks, tubs, showers, countertops and ceramic tile floors
Use where horizontal and vertical surfaces meet
For gaps up to 1/4-in
Mold and mildew-resistant
Interior use only
Designed to match MAPEI grouts
General | |||
|---|---|---|---|
Color/Finish Family | Gray | Unit of Measure Quantity | 10.5 |
Manufacturer Color/Finish | Pearl gray | Unit of Measure | Ounce(s) |
Series Name | Keracaulk S | Product Set Time | 24-48 hours |
Type | Latex | Paintable | Yes |
Package Quantity | 1 | Fire Rated | No |
Use Location | Interior | ||
Dimensions | |||
|---|---|---|---|
Container Size | 10.5-oz | ||
Features | |||
|---|---|---|---|
Fire Resistant | No | Sandable | Yes |
Mildew Resistant | Yes | Sanded/Unsanded | Sanded |
Mold Resistant | Yes | Stain Resistant | No |
Certifications | |||
|---|---|---|---|
CA Residents: Prop 65 Warning(s) | Prop 65 Warning(S) | ||
Warranty | |||
|---|---|---|---|
Warranty | 1-year limited | ||
Compatibility | |||
|---|---|---|---|
For Use in Bathrooms | Yes | For Use on Doors | Yes |
For Use in Kitchens | Yes | For Use on Siding | No |
For Use on Metal | No | For Use on Windows | Yes |
For Use on Concrete | Yes | For Use on Gutters | No |
For Use on Glass | No | For Use on Roofing | No |
For Use on Fiberglass | Yes | For Use on Trim/Moulding | Yes |
For Use on Masonry | No | For Use on Marine | No |
Miscellaneous | |||
|---|---|---|---|
UNSPSC | 31201600 | ||
Ratings may include incentivized customer reviews.
What Customers Are Saying
Customers overwhelmingly praise this product for exceptional color matching with existing grout and remarkable ease of use. Most highlight its seamless blend with surrounding grout, effortless cleanup compared to traditional options, and flexible, durable seal in tight areas. Many appreciate the caulk gun application, low odor, and quick drying time. Reviewers report strong performance in kitchens, bathrooms, and showers, valuing the grout appearance with caulk flexibility. A few mention higher pricing and isolated nozzle clogging issues, but these concerns are minimal. Overall, customers strongly recommend it for reliable, aesthetically pleasing results.
Customer review summary generated by AI, including incentivized reviews.Terrible
The caulk would not come out the tip on the first tube I purchased. Instead, it squished out the back. The same thing happened with the second tube that I purchased from another Lowes. However, because I needed to finish my job, I found a coat hanger and stuck it down the tip. About half came through the tip and the rest came out the back of the tube. Worse yet, is that after 20 hours, the caulk has not even attempted to dry where I applied it. This is a terrible product. I would definite...
This stuff saved my entire project!
Unfortunately. I didnt have any luck with the mapei chocolate colored grout because it didnt dry anywhere near the dark chocolatey color it was supposed to. It looked kind of light grey and was not the look I was going for. I tried everything but nothing worked. Finally i bought a tube of this online and gave it a try and it was way easier too apply than normal grout and it dried true to color saving my entire project. The cleanup is way easier too. I used a scotch brite scrubber and water an...
From Keracaulk 10.5-oz Chocolate Paintable Latex Caulk Verified PurchaserSweepstakes
Mapei Caulking
The majority of the time I’ve used this caulking, it’s been good experiences. The color is close to the grout color and the strength of the caulking is great. However, on occasion, after I’ve made a small opening on the end of the nozzle and lightly squeezed the gun, it continues to come out. I’ve removed the tube completely from the gun and it still steadily comes out. It’s wasted a third of the container before eventually an air pocket comes through. It makes using it impossible when your tryi...
Verified PurchaserSweepstakes
Manufacturers responses
What is thoroughly inconsistent about the responses from the manufacturer are they only respond with “100% silicone should be used in wet areas” if you see a complaint in a review. Someone sings the praises of the product and no reminder from the company to “watch for cracking as pull away as we do recommend 100% silicone for wet area projects”.
Thank you for your feedback regarding MAPEI products! Both 100% silicone and caulking, while suitable for wet areas or changes of plane in a wet area... Read More

Good Color Match
We used this sanded caulk in pearl grey to finish our kitchen backsplash. We used un-sanded pearl grey grout but the unsanded matching caulk was out of stock. Overall, we are very happy with how it turned out & the grout and caulking are a very very close match, especially considering one is sanded and one is not!
Functional and easy to install
I use this product when doing tile work - my wife and I fix up and resell homes and this is a product that we use between the granite counter tops and the tile. We also use it in tile showers in the corners and also between the tile and the base.
Verified PurchaserVerified Pro Sweepstakes
Don’t Buy It!
It does not firm up and dry in wet areas. Near the faucet it’s bleeding onto the tub and won’t dry. Going to remove it and use a good silicone caulk.
Verified Purchaser
Perfect latex caulk
This is the first time I have used this caulk. It was easily applicable and clean up was a breeze. It is smooth and easily finish-able. Now time will tell to see how it holds up. I think it will do great.
Verified PurchaserSweepstakes
Matched the grout perfectly
I had several cracks in the grout on the floor tile, as well as cracked grout beside the exterior walls. This product worked well to solve the problems and was a good match for the old grout on the floor.
Verified PurchaserSweepstakes
cheaper online
I grabbed some of this today and noticed that the instore price was twice as much as the online price. That would be my only issue.
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Hello David,
Thank you for reaching out and we are sorry you had a problem working with our Keracaulk Sanded product.
Please ca... Read More