Preventing Deck Joists From Rot

by Dennis Ward
(Toronto, Ont . Canada )

Would you put tar paper over deck joists to minimize rot or would it tend to hold moisture ?

Would you also leave a gap between butt joints for the same reason ?

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Oct 06, 2013
Deck protector clips look good
by: Michael R

I think there is a less expensive and simpler option.

Those little deck protector clips they sell on this site look like they would actually move the water and debris away from settling on the joist in between the boards.

Even if you use those deck joist protector rot not or whatever it's called, the joist may never rot but the debris can still get caught in between the decking and rot the boards out.

The clips I am talking about are right here.

I think it's a good idea if that is what you are worried about.

Apr 19, 2008
Rot Proof Your Deck Joists
by: Editor - Rich Bergman

There are a couple great products that I think you might want to look at to preven the joist from rotting over the long term.

Take a look at Deck Flash barrier from Cofair and joist caps from RotNot. I think they both are innovative ways to approach solving this problem.

As far as worrying about the butt joints at the ends of each deck board rotting, I must say it is not really a huge problem. However, I suppose it could be depending on your weather.

The only think I can think of is some kind of sealant that maybe can prevent water from being wicked up by the end grain.

Hope this helps you out.

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