There are several functions performed by a deck stain. It needs to give your deck protection from abrasion, UV rays, moisture, and heat. You need a quality deck stain that will hold up for as long as possible. There are several factors that go into how long a deck stain will give you the protection you need. While the quality of the stain itself is very important it is not the only factor to think about when figuring out the longevity of a stain.

Some other things that need to go in the equation are the deck’s condition and how much water and light it is exposed to. The two things most responsible for the failure of exterior coatings are water and UV light. Usually decks will be placed on a home’s sunny side and will get many hours of sun just about every day.

When it comes to sun exposures darker stains will give you better protection. Another important component of stain longevity is water exposure. Exposure to snow, dew, and rain can cause damage to your stain over time. Cracks in the surface of the wood will allow water to soak in. You want a stain that will be able to protect your deck from damage caused by water.

In order for a stain to last as long as possible the wood on your deck needs to be correctly prepared prior to the stains application. Before any stain is applied to your deck you should replace or repair any damaged or rotten wood. Before putting your new stain on you should also thoroughly clean the decks surface. You should consider power washing and sanding your deck if it has an old coat of finish. Not all stains are compatible and you want to prevent problems down the line. Your end result should be a deck that is free from any damage and splinters. Learn more about prep work for staining decks.