Reply by LesB

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Posted on Epoxy or not?

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2620 posts in 4324 days

#1 posted 12-30-2019 06:09 PM

I’m with John. First allow the slab to stabilize for a couple of weeks.

I too do not like epoxy finishes. For someone inexperienced in finishes I would strongly suggest using a water based Poly floor finish, about 4 coats. Very durable, I have used it on on both stairs and table tops with great results. Sand between coats with 320 sand paper and after the final coat cures for a few days you can buff it with a white 3M pad and carnauba paste wax for a glass smooth finish.

The cracks, you said they were about 1” long but not how wide. Narrow cracks can be difficult to fill with epoxy and it is quite messy. I like to fill cracks that are under 1/4” wide using fine sawdust and CA glue. You can collect color matched sawdust by sanding with a belt sander or orbital sander that has a collection bag attached. Pack the crack as full as you can with the sawdust then put THIN CA glue on the sawdust followed “immediately” with MEDIUM or THICK CA glue until it will take no more and forms a raised surface. The thin CA acts as a wicking agent for the thicker glue so it will penetrate. After it cures, which could be hours depending on the depth of the crack, sand level. if the crack is deep you can do this in a couple of stages. Sometimes the glue will heat up and give off fumes be careful not to inhale them. You can also spray the surface with a CA glue accelerant to form a quick top seal but it will still take time for the interior to cure.

-- Les B, Oregon

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