Expert: Jamie Yocono - 5/10/2009

Question
Hello
I have an indoor old style timer divan (bed/chair).  I am thinking of putting something like this in my outdoor area but would like to know if there is any product available to waterproof indoor furniture for the outdoor weather.

I look forward to your response.

Answer
Hi Julianne,

It really depends what finish your divan has on it right now.

Before I can tell you what to put on it to protect it for outdoor usage, let me give you a little background information.

There are two basic types of wood finish - a penetrating one that absorbs into the wood (like a Danish oil) and a surface one that (obviously) sits on top of the wood and protects it, like varnish.

If your piece has a surface finish on it, the pores of the wood are essentially sealed, making it impossible to put a penetrating finish on top of that. In theory, nothing will get through that "shell" of a finish. But if you have a penetrating finish on your piece, then you have the option of putting another coat of a penetrating finish on it, like Danish oil, linseed oil, etc.

What are the advantages? Basically one sinks in and protects from within, giving you richer colors and allowing the wood to still "feel" like wood. The other sits on top, making the wood feel a little more "plastic" like, but offers better protection from the elements.

If you can't tell what your piece has on it, I suggest you use a surface finish, like a good spar varnish. Spar varnish is made for marine (boating) applications, and it provides superior protection against the elements. You should be able to find it in any good paint department or store.

Use a good brush, it truly makes all the difference.

I would ask the salesperson if you can thin it down a bit, it will flow better and give a better result. Two thinner coats are better than one thick coat. Spar varnish will give you ultimate protection. Don't forget to start the painting by turning the piece over and varnishing the underside first. Then flip it upright and paint the rest. It's not too difficult, but take your time and avoid drips in the finish. You'll be happy you did. :)

Good luck, write back if you have any more questions.

Jamie Yocono
Wood It Is! Custom Cabinetry
Las Vegas, NV
www.wooditis.com