Take the 2-minute tour ×
Home Improvement Stack Exchange is a question and answer site for contractors and serious DIYers. It's 100% free, no registration required.

I want to paint my home's varnished window sills. How do I know when I have sanded them enough?

share|improve this question

2 Answers 2

If you want to do a good job, I'd sand until you begin to remove some of the stain from the wood (in effect, sanding the wood)

Then I'd prime the wood with Zinnser Bin wood primer than paint over that.

enter image description here

They have a fast drying version of this; I tried it once; don't use it. you need to move very very quickly. Use the normal drying one and it'll give you more time to work with it.

Wood "sweats" and the stain will eventually come through the paint. Removing the varnish and priming it with a wood primer (not a wall primer) will seal the wood and keep the new final paint from flaking / showing stain from the wood.

For some of the few window casing's I kept in this house and haven't removed, it's held up awesomely for 3 years now. I also had to use a heat gun to get 3 layers of paint off, but thats a different issue. I wouldn't use a heat gun if its varnished. Sand it.

I did this same process to any wood doors that weren't painted and all the wood trim we installed after gutting the rooms.

share|improve this answer

I'm a new homeowner and very new to all of this, but from what I understand, you just want to sand enough to remove the varnish (so the new paint will "stick" properly). Of course, you want the surface to be smooth as well. If both conditions are met, I'd say you're done.

share|improve this answer

Your Answer

 
discard

By posting your answer, you agree to the privacy policy and terms of service.

Not the answer you're looking for? Browse other questions tagged or ask your own question.