I have a question about finishing. I have a client that used redwood for his decking. It looked beautiful. He had put some kind of sealer on it. It didn’t take long before it turned a gray color. When it rains it looks beautiful again. Also where the sun does not hit, it stays the natural color. He wants to purchase redwood furniture but is afraid that it will turn gray. What can he put on the deck so it does not turn gray? Also does your furniture turn the gray look after awhile?
All wood left outdoors will eventually gray. It’s a factor of UV exposure, pollution and oxidation. Being outside year round is rough on the wood’s finish. The wood’s surface slowly oxidizes and absorbs UV rays, pollution and moisture resulting in the surface color changing towards a silver patina over time. The silver patina is surface deep only (less than 1/100″) and is not indicative of decay. Your furniture will last for decades and is not compromised in any way by the natural surface color change. We keep some of our display items year after year without refinishing them to show off the finish’s natural aging. (We like the silvering effect!)
To help keep your furniture looking new, after the winter season’s snow or wet season, take a few minutes to spruce up your set. We clean our display items in spring by hosing them down and taking a minute to brush them off (no soap or chemicals are needed).
Depending on the sealant chosen, you can slow the process of the surface color fading. The premium sealant we use will last four years. Once it has faded, you can refinish it without much effort by power washing carefully and then resealing. This will remove all the built-up oxidation, pollution and UV burning on the surface. It will also strip away the old sealant layers on the set and allow you to start fresh. Stripping the sealant lets the wood absorb the new coat deeper into the wood. Otherwise, the old sealant “seals” the surface making new coats superficial.
Power washing will take 15-20 minutes for a set of table and chairs. It is a surface-only job. You’ll be amazed at the results. A power washer at the tool rental shop is inexpensive. Rent it for the minimum time. While taking it back to the store, the furniture will air dry.
After the power washing, take one sheet of 100 or 120 grit sandpaper and lightly sand any areas the power washer may have roughed up a bit or lifted the grain. The sanding will take 5 minutes by hand. Then add a new coat of sealant. Do it on a dry sunny day and your set will look like new again. You can repeat this process every few years until you’re too old to bother…
You can choose from just about any stain or sealant you like because redwood takes well to most. The ol’ linseed oil and turpentine mix is never a bad way to go—the wood loves it; the weakness is the finish fades in months. There are many products on the market to choose from. It is best to use stain colors that are as dark or darker than the color of your wood. For further information about the sealants and specific colors we use, please read our Finish Options & Furniture Care page.