Sealing end grain on outdoor wood

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Forum topic by GregD posted 937 days ago 3563 views 0 times favorited 4 replies Add to Favorites Watch
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612 posts in 1761 days

937 days ago

I hope soon to have a wood fence installed – cedar pickets and pressure treated rails, rot board and cap (steel posts). I was thinking it would be helpful to put sealer on the end grain of each piece of wood before installation. Once the fence is constructed I can squirt it with water seal from time to time to try and slow down its rate of decay, but it won’t be possible to get at the ends of the boards; they will all be butted up against something or other (and not visible).

Does this seem like a worthwhile thing to do?

If so, what sealer would you recommend? The ends won’t be visible for the most part, but black would be better than white. The sealer will be slapped on quick and the part nailed up right away.

-- Greg D.

4 replies so far

View tenontim's profile


2131 posts in 2370 days

#1 posted 937 days ago

sealing end grain on out door furniture is one good use for Gorilla glue polyurethane glue. Work it into the end grain with a stiff brush and it will seal off the end grain for years.

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Clint Searl

1420 posts in 987 days

#2 posted 937 days ago

White latex roofing cement

-- Clint Searl.............We deserve what we tolerate

View Rick  Dennington's profile

Rick Dennington

3307 posts in 1820 days

#3 posted 937 days ago


If it were me, I’d paint the ends of the boards with an exterior grade said the ends won’t show, so a black paint would work…don’t know how long your fence will be, but you can put a good coat on each one, if you lay them side bt side, and by the time you get from one end to the other, they will be dry, and you can put one more coat on….that should do it….I replaced a fence at one of the homes I bought, and it was there 16 years and still holding up when I sold it…..

-- " I started with nothing, and I've still got most of it left".......

View GregD's profile


612 posts in 1761 days

#4 posted 937 days ago

Tim – that sounds like a great idea but maybe not for the quantity of fence I’m dealing with. It should help some other projects I have planned.

Clint – thanks. I wouldn’t have thought of that.

Rick – I usually prime, and sometimes also paint, all 6 sides of any wood I put up outsiide. And I do exactly as you descriibe with the primer on the end grain. I think I dismissed this idea initially because I was hung up on avoiding white, but I can probably get a gallon of primer tinted brown-ish so whatever bits are visible won’t be as distinctive.

-- Greg D.

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