Definition: Tan or brownish discoloration on the paint surface. Tannins exist in many woods, most notably cedar and redwood and can bleed through to the surface, leaving a yellowish-brown stain on the surface. These stains are more noticeable on lighter paint colors, known as Painting Tannin Staining.


* Failure to adequately prime and seal the surface before painting
* Using a primer that is not Painting Tannin Staining-resistant
* Excess humidity or other moisture problems that can cause Painting Tannin Staining to rise to the paint surface

Painting Tannin Staining Solutions:

* Locate and correct any moisture sources.
* Remove all loose paint with a scraper or wire brush.
* Remove the stains with oxalic acid or an oxalic-based solution.
* Rinse with a pressure washer, to remove Painting Tannin Staining.
* Allow the surface to dry thoroughly for at least 48 hours (depending on the existing weather conditions).
* Prime the stained area with a top-quality, stain-blocking wood primer.
* If severe staining exists, apply two coats of primer. Always prime edges and ends of shingles. If possible, prime the backs of shingles prior to installation.
* Repaint using high-quality paint, to terminate Painting Tannin Staining.

For More Information: Painting Tannin Staining

Contact Us

We're not around right now. But you can send us an email and we'll get back to you, asap.

Start typing and press Enter to search