BM WB Satin Impervo Chalking

13 years ago

I recently painted my kitchen cabs. The process has taken me a few months, (not much time outside Full Time Employment) as I'm somewhat of a perfectionist, and I've been diligent about cleaning, sanding, vacuuming, etc. between each coat. I brushed the boxes, and sprayed the doors and drawer fronts with an HVLP - two coats of BIN and more than couple coats of Waterborne Satin Impervo. I put the last coat on the doors and drawers almost two weeks ago and they've not yet been reinstalled because I wanted to give them time to fully cure. They are currently laid out flat in my garage/basement (not on the ground).

Here's the issue: there is a chalky dust on them when I run my hands over them. I can't be certain if it's paint "chalking" or simply dust settling on them from being in the garage. I'm afraid if it's chalking maybe I thinned the paint too much in order to be able to spray it, or that I learned too late in the project that I didn't have to be so timid with the sprayer, and should've been laying down thicker or wetter coats...? (It certainly shouldn't be due to "inferior" paint as I though BM WB Impervo was high quality...)

If it is chalking...will it continue to chalk forever, or is there an extent at which it will stop (if that makes sense)? Or, is the only way to remedy to re-prime and re-paint?

Advice?

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Comments (8)

Faron79
13 years ago
How much were you thinning the paint?
How long between spray-coats?

I believe however, that's it's good-'ol airborne dust!

About the only thing that causes chalking is UV-bombardment from the sun...so therefore this only occurs on exterior surfaces. Sun and weather break down the paints' binder-resin, leaving exposed pigments (chalk!) on the surface.

Is the "chalk" the same color as your paint?
Use a smooth white cloth...

Faron
kelligirl
Original Author
13 years ago
Thanks, Faron. I was hoping you'd respond. (I lurk in this forum often and appreciate your insight and knowledge.)

I thinned the paint according to the directions for the sprayer by using the included viscosity cup to measure, and was always within the specified range for latex paints (which I believe is something like 30 - 60 secs). There was a wide variance in the time between spray coats because it was most dependent on when I had time to work on the project. Sometimes it was days, weeks, months (January and February saw little action on the painting). But, perhaps there were times when it was a little as 3-6 hours... Because I was spraying such light coats they seemed to dry pretty quickly so I thought (hoped) that would be okay. Is that bad...?

The chalk/dust *is* pretty much the same color (white/off-white) of the paint, but that may or may not be indicative since I did all of the sanding in this same garage. And, since the project isn't finished I haven't been able to thoroughly clean or sweep so there is a fair amount of that dust floating around down there. Which I'm sure gets stirred around every so often when the garage door gets opened/closed...
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sombreuil_mongrel
13 years ago
Since they were not painted under climate-controlled conditions, a chalky appearance (but not color rubbing off) could be explained by a) dew settling on the work or b) freezing temps after application.
Casey
Faron79
13 years ago
Kelli-

There's almost TOO MUCH time between some of your coats, especially if they went on real light. Coat "A" may have been twice as heavy as coat "C", and so on.
Coat "B" may have been completely cured b4 a re-coat.
Unless the cured-out coat was scuff-sanded evenly, the coat applied after that won't hold as good as it could.

>>> This wouldn't automatically cause any type of chalking though...only possible durability issues of the lightest coat.
>>> A garage is a horrendously dirty place to be painting cabinets! It may not be visibly dusty, but shine a flashlight in the air at night, and it'll look like it's SNOWING...
>>> The only way painting-in-garages works PROPERLY is to create a "Paint-booth" out of plastic hung from rafters...including a "ceiling"! A fan blowing OUT of this booth is required, as is a furnace-filter on another "inlet", to filter venting air.
>>> Spray Filter-charger on this filter to hold dust better.
>>> A "wet floor" needs to be used too.
>>> Ideally, these coats would've been completed in a day or two, so the whole film-build could cure-out at the same rate, and fuse together better.

Faron
Michael
13 years ago
I painted the cabinets in my garage!

This is what happens when a painter retires from painting. LOL
Faron79
13 years ago
That's not a garage....that's a friggin' NASA Clean-Room!!!

;-)

OK Kelligirl,
Haul your cabs to Brushworks garage!

Faron
PRO
Christopher Nelson Wallcovering and Painting
13 years ago
That's not a garage....that's a friggin' NASA Clean-Room!!!

I agree!
kitchendetective
13 years ago
Showing Brushwork's garage to DH now. . .

BM WB Satin Impervo Chalking

Comments (8)

Faron79

kelligirl
Original Author

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BM WB Satin Impervo Chalking

Comments (8)

Faron79

kelligirlOriginal Author

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kelligirl
Original Author