Is it necessary to seal flagstone for an outdoor patio? If so, what materials are used to seal the stone?
Jim
Is it necessary to seal flagstone for an outdoor patio? If so, what materials are used to seal the stone?
Jim
Skim-coating with joint compound covers texture, renews old drywall and plaster, and leaves smooth surfaces ready to paint.
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Replies
I think you would only apply an enhancing sealer if you wanted the stone to look darker...bring out the colors.
Whenever you are asked if you can do a job, tell'em "Certainly, I can!" Then get busy and find out how to do it. T. Roosevelt
I have never seen flagstone sealed, and also never seen a problem with freeze-thaw damaging flagstone. Nearly all stone is designed for exterior use without further treatment.
Not sure exactly what kind of stone you have.
I was asked to seal bluestone flags in a covered patio setting. The client wanted a sheen to it. I used a hard masonry seal, but every spring, the surface flakes up and off, probably from underground moisture rising, being trapped under the seal and then freezing to fracture the surface off.
If starting over again, I would use a latex type that would breathe.
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