Rain after applying Epoxy?

[imgntht]

I was planning to do my Epoxy floor this weekend, one coat on Saturday and the second on Sunday. Looks like my weather forecast is calling for potential rain late Sunday or early Monday, and possibly for a few days. Is this going to cause any issues with the finish of the Epoxy, or will it only take longer to dry completely? I'm using a 2-part solvent based coating.

 

[munkey]

Are you worried about direct exposure to water, or just the increased humidity? My best guess is that you really don't want water coming into contact with your floor at least until the solvent has fully evaporated. At that point, your floor will still be "curing" but not "drying" per se.

As far as the maximum (airborne) humidity, surely your product literature has guidelines for both this and temperature extremes. Again, just speculating but once your floor has gotten to the tack-free/"light foot traffic" stage, it will probably not be greatly affected by some moisture in the air.

(Disclaimer: I am not a professional, but I have successfully used solvent based epoxy to do several garages... perhaps somebody could give you better information or a more informed opinion if you named the exact product you are using and the exact weather conditions you are expecting.)

 

[Edger]

No expert either when it comes to rain, but I have done several jobs indoors while it was raining outside and with different epoxy mixes with no problems. Even got flooded on one floor the night it was put down so it was about 8-16 hrs old and it did not alter the look. I would think that rain on wet epoxy would leave an orange peel finish.

...Just remembered that one type of Sika epoxy used to go white with water. Did a floor and condensation from the tin roof in the cold morning dripped all over the floor leaving white marks.

Better check with the manufacturers and hope you talk to someone who really knows.

 

[imgntht]

I was worried about humidity, but now that you mention it...my service door does have some slight space under it where wather will leak into the garage. So it could come in contact too. By then though, I should be on my second coat and hopefully even that would be down for a few hours.

My product instructions do recommend preferred humidity and temperature levels during painting, wasnt; sure about after. This is my first garage epoxy, so I guess I'm just a bit nervous that it turns out okay considering all the work and money invested.

 

[LegacyIndustrial]

I was worried about humidity, but now that you mention it...my service door does have some slight space under it where wather will leak into the garage. So it could come in contact too. By then though, I should be on my second coat and hopefully even that would be down for a few hours.

My product instructions do recommend preferred humidity and temperature levels during painting, wasnt; sure about after. This is my first garage epoxy, so I guess I'm just a bit nervous that it turns out okay considering all the work and money invested.

Wait

 

[rugerlady]

When using 100% solids, I would not apply it during rain or allow it to cure while it is raining. When it gets wet while curing, it can make the coating cloudy.

 

[imgntht]

I believe mine is only 70% solids...Rustoleum Prof Coating.

I can always block off the service door easily so no water actually penetrates through.

So as long as it doesn't get wait while curing I should be okay? I'll have to watch the weather and see how much we are expected to get and if it is a guarantee, or just possible.

 

[pajoshi]

i did my base epoxy coat yesterday and it was sunny and afterwards it started raining in the evening. The garage was closed so no water issue here. I am just concerned about the humidity today AM as it shows 100% and i am supposed to put clear top coat within 24 hours( dont want to go the sanding route later ). Does humidity matter for applying top coat? Th instructions dont say anything about top coat. Any help would be appreciated
Thanks