Need help finishing a concrete hearth
I’ve made a new concrete hearth and was quite happy with the smoothness/colour of it (the front airholes will be covered by wooden trim) however whenever I touched the surface with my hand or a brush, a lot of particles came loose (is this “dusting”?).
I decided I needed to seal the concrete and used bostik concrete sealer. After 24 hours it now looks really patchy, still feels grainy to touch and I have no idea what to do next to give it a smooth clean finish?
Images below to show context and desired finish
Submitted June 11, 2021 at 06:21AM by juniorhood
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