Oil Impervo - Paint Talk

vermontpainter · 01-16-2009, 07:33 PM

If you were using satin impervo oil on a primer + 3 brushed application, for the in between coat sanding would you:

a. light wipe to smooth out any particles that settled in the finish during the eternal dry time

b. more comprehensive sand to dull the sheen and soften the brush marks

c. other, and if so, what do you like?

Tonyg · 01-16-2009, 07:36 PM

I'll Play!

What is "B" then "A" for $200

Quote:

Originally Posted by vermontpainter

b. more comprehensive sand @ 220-320 to dull the sheen and soften the brush marks

a. light wipe to smooth out any particles that settled in the finish during the eternal dry time

Even the WB Impervo has an 8hr recoat time...

PS: I bought the Aura semi-gloss for trim today instead of the WB Impervo. I'm beginning to use this more often. I put 2 coats on in a day and even went back on some for a 3rd on some.

vermontpainter · 01-16-2009, 07:38 PM

To achieve the ultimate finish with this product, do you find it necessary to dull the sheen in between coats and flatten out the brush strokes, or do you just let it build with each coat?

Tonyg · 01-16-2009, 07:43 PM

Quote:

Originally Posted by vermontpainter

To achieve the ultimate finish with this product, do you find it necessary to dull the sheen in between coats and flatten out the brush strokes, or do you just let it build with each coat?

Honestly, its been a while since I used the oil Impervo but I think every coating looks better when sanded and wiped clean between coats.

The paint whisperer · 01-16-2009, 08:08 PM

I normally use 220 before I prime or first top coat. In between coats, I use one of those dark green dish scrubber to lightly sand.

MAK-Deco · 01-16-2009, 08:10 PM

Boy its been awhile since we used it but with a little Penatrol it seem to level out great with sanding IMO. I would sand tho if I felt it was necessary due to dust or heavy brush marks...

**ProWallGuy** · 01-16-2009, 09:04 PM

I would scuff it with a fine or very fine sanding sponge, then tack off thoroughly.

I don't recall seeing or having brush strokes with the Impervo, but the last time I used it was probably prior to them changing the formula for the VOC compliance. That might have made a difference in the leveling characteristics. Or I might just be that freakin' good.

**daArch** · 01-16-2009, 11:09 PM

Although I always resisted using BM's interior oils, the SOP for other SG oils was b.

We would mix in a little raw linseed to retard drying and thus promote leveling..... and keep dust makers out.

DeanV · 01-16-2009, 11:54 PM

If all goes well on previous coats, I think it should be a real light sand before the final coat just to knock of any little nubs. I find if you sand too much, it can mess with the final sheen a bit with some finishes.

johnpaint · 01-17-2009, 01:50 AM

Green rubbing pad with grain between coats,tack rag,thin out paint a little bit so it goes on fast, if there is no air blowing on it and it dries slowly it will turn out great.You can also buff it a little after it dries.I would say three coats works best.I really like a brush finish with oil, give your eye something to look at, instead of the white-out look.

johnpaint · 01-17-2009, 01:54 AM

Quote:

Originally Posted by daArch

Although I always resisted using BM's interior oils, the SOP for other SG oils was b.

We would mix in a little raw linseed to retard drying and thus promote leveling..... and keep dust makers out.

DaArch:Wonder if they have changed linseed oil any over the years?

Dave Mac · 01-17-2009, 08:45 AM

Quote:

Originally Posted by MAK-Deco

Boy its been awhile since we used it but with a little Penatrol it seem to level out great with sanding IMO. I would sand tho if I felt it was necessary due to dust or heavy brush marks...

what he said

**Workaholic** · 01-17-2009, 12:20 PM

I also agree with Mak.

Bender · 01-17-2009, 01:10 PM

Are you saying it already has primer + 3 coats?

vermontpainter · 01-17-2009, 02:37 PM

Quote:

Originally Posted by Bender

Are you saying it already has primer + 3 coats?

Here are the exact details:

Its new construction. Paint grade trim package comes in as preprimed poplar, gets installed by carpenters, joints are sanded. We feather the joints, fill nails, caulk and apply full coat of oil primer, then two coats of oil impervo. All coats are brushed here, and we want to end up with the smoothest, most glass-like final coat we can achieve. My inclination is to smooth out alot in between our coats and lay that final coat out thin just to "tip it off". I was curious to hear from people who do alot of brush work with impervo, as to how far they go with the in between coat sanding. I like the look and feel of dulling the sheen and flattening out the brushed look to end up with a final coat where the brush work is very subtle, but still looks hand crafted. If you hit that final coat just right, it lays down beautifully and has the perfect look and feel. Don't get me wrong, I know that many guys here are able to achieve that by spraying, I have no doubt. Its not an option here, so we are trying to get as close as we can to a trim grade spray job by hand. I know there are guys here who are capable of that as well, and would appreciate hearing from them. Thanks.

bikerboy · 01-17-2009, 05:15 PM

I just wish I had a builder who was;

A: So anal he wanted that kind of work.

and,

B: Willing to pay for that kind of work.

Tonyg · 01-17-2009, 07:09 PM

So V, is it your choice for the oil? I like the WB Impervo when I don't need the dry times and like I said, the last two jobs I chose the Aura Semi and it levels out very nicely.

vermontpainter · 01-17-2009, 07:21 PM

Quote:

Originally Posted by Tonyg

So V, is it your choice for the oil? I like the WB Impervo when I don't need the dry times and like I said, the last two jobs I chose the Aura Semi and it levels out very nicely.

Tony

I specced the contract, which was about a year ago for waterborne, either wb impervo or aura. Oil impervo was offered as an upgrade and that is what they chose. Not my first choice to work with, but it sure is a beautiful finish. Hopefully, our last big hurrah with this product so I want to make it the best we can possible do.

DeanV · 01-17-2009, 07:38 PM

Try an ox hair Corona chicago loop brush. Softer than white china bristle. The only downside, is I have only seen them in 2.5 or 2" widths. If you have wider trim, I would prefer a wider brush (seems to help with brush marks and not have to work the finish as much).

johnpaint · 01-17-2009, 07:40 PM

http://www.johnhowellconstruction.com/fire_place_resized2.JPG

This is Impervo brushed three coats