boubbles

[varia]

Im doing my garage floor.
the floor was grinded, pressure washed, dryed sealed, painted then flakes.
First coat (AeroMarine Cycloaliphatic “Non Blushing” Clear Epoxy #300/21) was very good, but after the second, i noticed air bubbles, then later holes on the surface.

after researching i find this topic: http://www.garagejournal.com/forum/showthread.php?t=23338
however i dont want to spend $160 on an applicator

Any suggestion for this?
Thank you!
Chris

 

[LegacyIndustrial]

Chris, please post some pics.

 

[varia]

here are few:

 

[benwah]

How did you apply this? Pour and squeegee then back-roll? Do you know how thick you applied this? Looks pretty thick for a single coat, unless the pics are misleading.

I would sand the ENTIRE surface until uniformly de-glossed, solvent wipe, then roll on a THIN coat @ 4-6 mils.

 

[LegacyIndustrial]

Agreed, looks super thick.

 

[varia]

this was the 3rd coat, this morning.

so wait till its dry, sand it back (grid?) and then clean it, then apply a think coat again?
thank you!

 

[benwah]

Yes, wait at least 24 hours or until it has cured. Sand with 100 grit sandpaper or #60 mesh sanding screen (if you have a 17" floor buffer), until the surface is de-glossed. The key here is to sand the entire floor. After you clean it, roll on a thin coat.

 

[varia]

thank you!
I will wait till tomorrow then sand it with a floor buffer.

How should i do the thin coat? Poor it out or use tray, slow motion, anything else?
Thx
Chris

 

[benwah]

Whatever you feel comfortable doing. You're working with 100% solids right? If it were me, I would ribbon onto floor, and use a flat floor squeegee to spread, then back-roll with a roller. Don't over roll it, it only takes 1 - 1 1/2 passes to roll it. Go at normal speed. You should be able to see the liquid clear epoxy just fine since your floor won't have any sheen to it.

Note: If you're applying a polyurethane top coat, you could do it now, since you're sanding the floor. Since you already have 3 coats of epoxy on top of your flake, another coat isn't really necessary. If you're not doing polyurethane, just do your final coat of epoxy as planned. Good luck! Any questions ask away.