Cement Wooden Fence Posts

So six foot high fence posts ideally need to be buried three feet into the ground.

Cement wooden fence posts.

Inspect your posts at least once a year ideally in spring or fall and reapply paint or stain as necessary to protect the wood and keep your fence looking its best. Pour the concrete into the hole until it s 2 3 in. Purchase a quick setting concrete from your local hardware store. This gap will widen with natural expansion and frost allowing water to pool here and cause rot.

Setting the post 1. Place the form tube into the hole. Pour the dry mix into the tube. Seal it with a sealant that bonds to concrete and wood such as some silicone sealants or exterior acrylic latex caulk.

Set the post into the form and temporarily stand straight. Make sure the post is plumb before allowing the concrete to set. The general rule of thumb when setting a post is that the depth of the post s hole needs to be 1 3 to 1 2 of the actual above ground height of the post. The diameter of your post hole should be three times the diameter of your post.

Once the initial curing is complete seal the gap around the base of the fence post. Seal the gap between post and concrete. Apply high quality exterior acrylic caulk or silicone specifically designed to adhere to concrete at the base of the post. Soak the bottom of the wooden fence posts in a wood preservative containing copper napthanate such as cuprinol.

Caulk around the fence post base. Two 50 pound bags of fast setting concrete will set a 4 inch by 4 inch or a 4 inch diameter post in a 10 inch diameter hole.