Weatherproof Your Deck

The first step in weatherproofing a deck is to thoroughly clean it. You can clean it with a hard bristle brush and a deck cleaning solution or you can use a pressure washer. If you elect to use a pressure washer it is important to use a low pressure nozzle and keep the nozzle an adequate distance away from the decking boards (approximately 12 to 18 inches) so that you do not damage the wood grain

 While cleaning the deck look for and replace any rotting or damaged decking boards. Also, hammer down any loose nails, or replace them altogether. In addition, make sure to use non-corrosive nails when fastening down new deck boards.

 After the deck has been cleaned, and has had time to thoroughly dry, you can then apply the deck weatherproofing solution. Typically deck weatherproofing products used to seal the deck are clear deck sealers, semi-transparent stains, colored stains, and paints. I prefer semi-transparent stains the best as they provide color and protection, and they don’t peel.

 I find the best way to apply the deck sealer is with a roller and a 4 inch wide brush. However, before weatherproofing your deck, make sure the weather forecast is clear of rain for at least 24 hours, and preferably 48. 

With the weather forecast clear of rain, start in a corner of the deck and work your way outwards in small sections at a time. First apply the deck sealer with a roller, and then follow up behind with a paint brush to work it into the decking boards.

 For the deck balusters and railings it is best to apply the deck weatherproofing sealant with a brush, albeit it is time consuming. Spraying these items simply wastes too much sealant, and it doesn’t get worked into the wood pieces as well.

 Once you’ve weatherproofed your deck allow it to dry for 24 to 48 hours, depending up weather conditions, prior to walking on the deck or placing items on it.