Those are
the tannins bleeding through... and they can be very resistant to paint!
Water stains bleeding through Wood grain showing Wood
tannins bleeding Painting with a «white» or light colored paint over Mahogany or Pine
For woods that exhibit
tannin bleed - through, we recommend General Finishes Stain Blocker.
The top was a challenge — there was
tannin bleed through the white, so I layed a coat of APC Topcoat Sealer to help block the bleed, when it dried I reapplied the whites, and included a little cannonball for depth --
I recently painted 3 different old furniture pieces in Annie Sloan Old White and never worried about
tannin bleed, although each piece is pine and hand - made, because all 3 had been previously painted white.
The wood
tannins bleed through your paint like the photo above shows.
Since I don't need to worry about
tannin bleed the P of P should work.
It dried to a very durable finish right away — no wood
tannins bled through and the mixture was super smooth.
If it is an old piece that is dark and stained and you are using a light color of paint — you may have
some tannins bleed through.
Not exact matches
The
tannins and caffeine in green tea shrink blood vessels, which ultimately help to stop the
bleeding.
Since the
tannins in witch hazel work to tighten the skin, they can also help promote healing and stop
bleeding on a minor cut.
Tannins tighten tissue, lessen minor
bleeding and may alleviate intestinal inflammation.
You shouldn't have a yellowing issue with either of those products, however I know if you painted a piece that's prone to
bleeding and didn't prime it first, the sealer can occasionally (rarely) draw out the wood
tannins and make it look a bit yellow.
If there is
bleed through of the
tannins or stain in the wood after one coat of chalk paint, you should use clear shellac over the surface first, let dry, then apply another layer of chalk paint.
Raw wood can
bleed tannins immediately after the topcoat dries or months later with seasonal temperature changes.
If you use the CCP with POP it will create a very hard and durable finish and should stop any of the oak wood
tannins from
bleeding through.
This will block
tannins that can
bleed through the paint.
If your chairs are from the same set, the wood
tannins may
bleed through.
If you are painting new, untreated wood, apply clear shellac to any knots and open grains to block
tannins that can
bleed up through your new paint layers.
IF - after the first coat of Chalk Paint ®, you see
bleeding of wood stain or wood
tannins (and remember, there is a difference between «
bleeding» versus you not applying a thorough coat of paint and seeing the paneling beneath)-- reference THIS POST ABOUT USING SHELLAC.
It will help prevent the «
bleed through» of the original finish or the
tannin from the raw wood.
Also, if you decide to paint with a light color, make sure you seal the furniture first with a shellac primer, or the
tannins may
bleed through.
that means it seals in the surface — preventing stain or wood
tannins from
bleeding through to the paint.
Again, note that shellac is a sealer so it will seal the surface preventing stain or wood
tannins from
bleeding through your new paint.
Natural
tannins or existing stained finishes may
bleed through paint; test on hidden area to ensure stain blocker is not required.
No
bleed - through of wood
tannins.
I have never mixed the two, but it may work perfectly and cover pieces where the wood
tannins might
bleed through better.
Negative: The only negative I found using the Calcium Carbonate is that there was the tiniest bit of
bleed - through of the wood
tannins.
However, I have experienced significant
bleed through of
tannins when using ANY kind of chalk paint.
Topcoats can activate
tannins in the wood, or dyes in the previous finish, causing yellow or pink
bleed through.
Wood can
bleed tannins immediately after the topcoat dries or months later with a change in temperature that comes with a change in seasons.