Questions and Answers for BEHR PREMIUM 1 gal. #STC-35 Dark Coal Semi-Transparent Flat Interior/Exterior Concrete Stain

A:  Hi joe, thanks for writing in with your question. Each gallon of the Semi-Transparent Concrete Stain will cover between 250-500 sq. ft. depending on the texture of the surface. Good luck with your project! -Giovanna

A:  Hi mark, thanks for writing in with your question. Yes, it is a good idea to use the Concrete Bonding Primer No. 880 before applying the Semi-Transparent Stain to promote adhesion. The concrete should also be etched until it feels like 150-grit sandpaper before priming. Good luck with your project! -Giovanna

A:  Hi Chad - Thank you for your questions! Our Semi-Transparent Concrete Stain is a durable, stand-alone product, so applying a separate sealer on top isn't necessary. However, if you prefer a glossy finish, our Wet-Look Sealer can be applied on top. To ensure a long-lasting finish, we recommend removing the existing finish completely, etching the bare concrete, then priming the surface with our Concrete & Masonry Bonding Primer before staining (https://www.homedepot.com/p/BEHR-Premium-1-Gal-Concrete-and-Masonry-Bonding-Primer-88001/100129649). Best wishes for your project! - Sara

A:  Probably because unsealed would be porous. Try it on a piece of the material, or side or bottom first to see if you like the result.

A:  Hi Sunshine, Thanks for your question. Unfortunately, we don't recommend applying this product to unsealed slate. We currently don't have a floor coating we can recommend for slate surfaces, so you may want to reach out to your local Home Depot for some suggestions on a different product that will adhere properly to slate. Best wishes for your project! - Sara

A:  Hi Sam, thank you for your question and interest in our products. If your deserved look and coverage are achieved in one coat, an additional coat is not needed. However, keep in mind that two coats are recommended to ensure the most successful application. For your square footage, you would need one gallon to apply two coats. Hope this info helps. Happy staining, and best of luck with your project! -Joanna

A:  Dear Valued Home Depot Customer, to better answer your question, please contact the HD.com customer service department at 800-430-3376 call any day between 6 a.m. and 2 a.m. EST, they can either answer your question or transfer you to your local store to answer your specific question.

A:  It is already tinted and you order based on your color choice.

A:  Hi Rob, This specific product listing is for Behr Semi-Transparent Color Concrete Stain already tinted to Dark Coal #STC-35, so you would be able to use it straight out of the can because the stain would already be tinted before arriving to your doorstep. However, the stain itself needs to be tinted before use. Please feel free to reach out with any additional questions you may have. Best of luck with your project! ~Doris

A:  Hi Jen, thank you for your question. Our Semi-Transparent Waterproofing Stain & Sealer can be removed, if needed, with our Wood Stain & Finish Stripper No. 64, by sanding it off, or with a conventional wood stain stripper. Hope this info helps. Best of luck with your project! -Joanna