How to Seal a Concrete Countertop How to Seal a Concrete Countertop

What You'll Need
Vinegar and Sponge
squeegee
Penetrating or Densifier sealer
Paint Brush
Cloth

If you install a concrete countertop you are going to have to add a sealant to protect it from heat, stains, UV rays and scratches. Not to mention bacteria production. In this article we are going to tell you the best ways to seal your countertop.

Step 1 - Choosing Your Sealant

You have two of the best to choose from, but you need to know one thing about your countertop. If it has been polished with a grit finer than #200 it is too smooth for topical sealers; when polished to a gloss you can only use penetrating sealers.

Step 2 - Cleaning the Countertop

Wash the countertop really well with vinegar so that you can get all the grit and excess cement powder off it. Make sure you saturate it thoroughly. Then rinse and squeegee it off and get ready to apply the sealant.

Step 3 - Applying the Sealant

Regardless of which sealant you are using they are applied the same way. Just brush them on with a paint brush or you can spray them on. Make sure that you get a good coat of it on and then wipe off the excess with a soft cloth. Once dried these are the best sealants to cover all the areas you need covered. There are none that are completely stain proof that will leave the concrete looking like concrete. So any stains on this need to wiped off before they set.

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