Quick Answer: How To Install Wood Post On Concrete?

Will wooden posts rot in concrete?

Simply setting the posts in concrete does create a condition that will accelerate rot in the bottom of the posts. With pressure-treated posts, the rot will be slow. The concrete at the top should be sloped away from the post to grade level to avoid water pooling around the base.

Should wood posts be set in concrete?

First rule, gang: Do not set wooden posts in concrete. Look, no matter what preventative steps you take (and I’ll get to those), eventually wooden posts rot, and eventually you’ll have to set new ones. Not only does burying them in concrete make for more work down the line, it actually can speed up the rotting.

How do you attach something to concrete without drilling?

A simple fix might include an adhesive or adhesive-baked hook, while there are other fasteners like hard wall hooks and masonry nails. Powder-actuated fasteners and concrete nail guns are useful for supporting frames and providing a much greater hold.

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How do you attach wood to concrete without drilling?

If you are willing to make holes in the concrete but do not want to buy the particular drill bit needed, then the simplest solution is to get nails for your project. Standard nails will not work on concrete, but some nails are made specifically for nailing wood to concrete. Cut nails will also work for this as well.

How long will wooden posts last in concrete?

Life expectancy of posts now is anywhere from 18 months to 5-7 years max. This then got me thinking that the 100mm x 200mm sleepers I had planned to use to create a bank for the stream – up ended vertically with 1/3 buried in the ground – probably won’t last too long either.

How long will pressure treated posts last in the ground?

3) A deck built with pressure treated wood will last a long time. Promotional literature promises lifelong performance for pressure treated wood. The Forest Products Laboratory and other research groups have shown that treated wood stakes placed in the ground for more than 40 years remain rot-free.

How long will pressure treated posts last in concrete?

A PT post will last a long time in concrete, maybe 5 to 10 years in soil alone. I suggest you embed the post in concrete, trowel a peak around the post so water runs off, and don’t let the PT post come in contact with the ground.

Why deck posts should not be set in concrete?

A deck post should always be placed on top of footing, not inside concrete because it can break. Concrete tends to absorb moisture and wood expands when it gets wet, so these two factors combined will result in the wood breaking the concrete.

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Can you put wood directly on concrete?

Wood in direct contact with concrete, and the dampness often found there, will rapidly decay. To avoid this, use pressure-treated lumber. This is wood impregnated with decay-resisting chemicals, usually chromated copper arsenates. However, pressure treating creates only a shell of protection around the wood.

Should I use 4×4 or 6×6 fence posts?

4×4 is perfect for these very standard fence dimensions. Normally 4×6 or 6×6 are needed for gates or extreme wind loads.

How long will a 4×4 post last in concrete?

A pressure treated 4×4 set in concrete should last about 20 years of more, depending on the soil conditions and drainage.

How long will a 6×6 post last in concrete?

The treated post that are rated for ground contact are guaranteed for 40 years.

How do you keep fence posts from rotting in concrete?

Consider Adding Posts to Concrete



From here, you should fill the hole with about 6 inches of gravel. This will prevent rotting by ensuring that the post is kept dry when water makes its way into the soil. Place the post in the gravel, then fill with a batch of cement until it reaches the top of the hole.

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