Concrete & Masonry Sealers Q&A

Question 1

Will this work on fiberglass? View answer

Asked 5 ´years ago

Question 2

Will this seal veneer plaster against grease and oil, other food stains, in a kitchen? View answer

Asked 6 ´years ago

Question 3

Can this sealer be used on a thin concrete overlay countertop? Is there a minimum concrete thickness to use this sealer? Thank you! View answer

Asked 6 ´years ago

Question 4

I removed the carpeting and drywall from one bedroom due to mold from a slow pipe burst. Now the mold is gone, the wall is repaired. I have a clean concrete slab floor. I have slightly painted the floor with a very watered down latex wall paint, just to see if it would adhere. I am looking at both your floor paint and the penetrating sealer. Is it too late to put the sealer on? Because I put the washed down paint on? I laid a towel down on one corner of the floor and it got musty. I think this is because moisture is slowly coming in the slab from outdoors. Would the penetrating sealer rectify this? Thank you for your help. View answer

Asked 4 ´years ago

Question 5

Would this help preserve a brick pathway? Would it make is slick? View answer

Asked 4 ´years ago

Question 6

Can this be power washed after it is applied? If so how long after the application can it be power washed? View answer

Asked 2 ´years ago

Question 7

We have a brick garage wall, the INSIDE is clay tile from the 1920's . The INSIDE is showing significant efflorescence and some spalling. Question 1: Should we apply GBS Penetrating Sealer to just one or BOTH (exterior brick , interior clay tile) sides of the wall? Question 2: Your instructions refer to the need to pressure wash surface prior to spraying. Is this necessary for a brick wall? Can we just brush it clean and apply the product? Thank you View answer

Asked 5 ´years ago

Question 8

Will this product work for bluestone walkway? View answer

Asked 4 ´years ago

Question 9

What type of flooring can I put over this product? View answer

Asked 3 ´years ago

Question 10

Can this product be used on aggregate driveways? View answer

Asked 7 ´years ago

Question 11

Does hydraulic cement use INSIDE YOUR HOUSE HARMFUL? Thank you. I cannot use the GBS Sealer on a cement basement wall that has paint on it, correct? Water is coming in where floor meets the wall. Thank you. View answer

Asked 5 ´years ago

Question 12

I want to clean, then seal and paint our old concrete porch and steps. Can I seal it to fill in divots, etc and then paint over it once the sealer is dry? View answer

Asked 4 ´years ago

Question 13

I would like to use this on colored stucco and joint compound. Is that successful? How long after I stuccoed has dried could I apply this? Will it affect the color? View answer

Asked 5 ´years ago

Question 14

Do you sell this in a smaller size? I am looking at sealers for my concrete 14 square foot shower floor. Your product sounds perfect for me except the cost per ounce options. Either I but a gallon at $.45/oz or a few of your samples at $.9/oz which (obviously) is double the cost. If I go with the lower cost per ounce option, I will have 119 oz left over. It seems if your product is to be used as advertised on "All Rooms, Basements, Bathrooms"...etc. I can't be the only homeowner with a small project wanting a smaller size than a gallon while also wanting the lesser $/oz cost. View answer

Asked 3 ´years ago

Question 15

Can I use this to seal raw Saltillo tile? Does this change the color of the tile at all? I'm looking for something matte. View answer

Asked 3 ´years ago

Question 16

Will this penetrating sealer block both moisture and any below slab off-gassing/gasses? View answer

Asked 3 ´years ago

Question 17

I have a some questions concerning your GBS Penetrating concrete sealer. I want to use it on a basement floor that has some areas that were ground down to make it level. It also has some areas the were patched with a concrete patch. Do I need to etch the concrete where it was ground and patched? Also how long can it be stored? I want to order it now when it will not get cold during shipping, but I plan to apply it on my basement floor later this winter. I can store it so it will not get cold and the basement room will be heated as well. Thanks , Julie View answer

Asked 5 ´years ago

Question 18

I have up carpet and have a concrete floor with a big crack running through it. I had a foundation guy check it, and he said foundation is okay but crack needs to be sealed with epoxy before covering with any type of flooring such as ceramic tile. I am extremely chemically sensitive. Do you have a product that might work for this? View answer

Asked 7 ´years ago

Question 19

Does this product contain PFAs or PFOAs? View answer

Asked 3 ´years ago

Question 20

we live in a new building (6 years old) with slab floor that was not originally planned as living space without a moisture barrier under slab. Can we use this to seal the slab to put wool carpet on slab, or do you recommend another product?We used 6 mil plastic and some of our rooms have musty odor and after pulling 90 dollar a yard wool carpeting up we noticed a white residue under plastic and super strong musty odor. we read that mildew can form between concrete slab and plastic underlayment. View answer

Asked 6 ´years ago

Question 21

Can I use this to seal my concrete before laying a moisture barrier and waterproof cork flooring? Is this necessary? I'm trying to avoid mold growth under the moisture barrier. View answer

Asked 2 ´years ago

Question 22

How often should GBS Concrete Sealer be reapplied to pavers? View answer

Asked 6 ´years ago

Question 23

On a recently enclosed patio, most of the slab is sealed. But there are a couple of patches where the sealer is no longer there. Am i able to cover the existing sealer with the Green Building Supply, Penetrating Concrete Sealer? View answer

Asked 4 ´years ago

Question 24

After I apply your sealer on my driveway, can I still paint or stain it? View answer

Asked 5 ´years ago

Question 25

will it adhere at 35 degrees? View answer

Asked 6 ´years ago

Question 26

Can sealer be applied with brush? View answer

Asked 6 ´years ago

Question 27

After using this sealer on basement concrete walls, can I use adhesive to glue foam insulation panels to the sealed concrete? View answer

Asked 3 ´years ago

Question 28

Can sealer be applied to only one section of basement? View answer

Asked 6 ´years ago

Question 29

We are looking to seal our outdoor patio that seems to be eroding in spots. Is this as simple as applying with a roller brush, or do we need to do any prep before? View answer

Asked 5 ´years ago

Question 30

Can this product be used for limestone retaining walls? View answer

Asked 4 ´years ago

Question 31

Does the concrete paint have a granular texture. I read that paint on concrete can be slippery unless a sandy component is present.? View answer

Asked 1 ´year ago

Question 32

Use for concrete candles? View answer

Asked 4 ´years ago

Question 33

We have hairline cracks in small our concrete fish pond/water lily bowl. 1. Is this safe for the fish ( generic mosquito fish). Will it work as a crack sealer? View answer

Asked 6 ´years ago

Question 34

Can this sealer be used over a concrete dye that has been applied topically to the concrete? View answer

Asked 1 ´year ago

Question 35

Can you use on exterior brick chimney? View answer

Asked 6 ´years ago

Question 36

I'm looking at the product SafeCoat Hard Seal to cover up cat urine. The previous owner of my home had a cat and I'm looking for a way to cover the smell. How well does this product cover up cat urine that's on a concrete subfloor? Can this product be used on a concrete subfloor? Is there a better product that you are aware of that would do this?" View answer

Asked 9 ´years ago

Question 37

Will this work over concrete painted with acrylic concrete paint? View answer

Asked 1 ´year ago

Question 38

Can this be used on tile and grout? View answer

Asked 1 ´year ago

Question 39

I need a non-toxic stain and sealer for the brick floors in my house. The floors are made from the same brick that is on the outside walls of my house. View answer

Asked 7 ´years ago

Question 40

If I'm applying this outdoors, what amount of time should pass before any rain can fall onto the surface? View answer

Asked 5 ´years ago

Question 41

Do you have something I can use to seal a concrete bird bath that is leaking? It would have to be non toxic to birds drinking the water. Would you like me to experiment with a free sample of your product and report back to you? View answer

Asked 7 ´years ago

Question 42

What are the ingredients? View answer

Asked 2 ´years ago

Question 43

I have some interior brick which is crumbling and creating dust. Would AFM Safecoat Grout Sealer be an appropriate product for this? View answer

Asked 7 ´years ago

Question 44

Will this product work in basements with a seeping leak? View answer

Asked 5 ´years ago

Question 45

Two questions. 1. The specs say 1 coat is recommended, but the description says it waterproofs and preserves in 3-4 coats. Am I missing something? 2. Is this suitable for interior concrete floors, or would it not be durable enough? View answer

Asked 4 ´years ago

Question 46

Does this leave a scratch resistant surface on concrete? View answer

Asked 4 ´years ago

Question 47

Is this product safe to use on flagstone that is being used as countertop in a bathroom? View answer

Asked 6 ´years ago

Question 48

Can I use this on my slate kitchen floors? View answer

Asked 5 ´years ago

Question 49

We used concrete paint for our basement floor, what can we put over it to seal it so that it doesn't scuff up? Afm poly bp says it's for wood and the concrete sealers I see on here are for the raw floor, not to be applied once painted. View answer

Asked 4 ´years ago

Question 50

Is this good for saltillo after the tile has been stripped of all sealers? View answer

Asked 5 ´years ago

Concrete & Masonry Sealers Q&A

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