Cement Wooden Fence Posts

Caulk around the fence post base.

Cement wooden fence posts.

Apply high quality exterior acrylic caulk or silicone specifically designed to adhere to concrete at the base of the post. Mix fast setting concrete in a wheelbarrow. 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. Purchase a quick setting concrete from your local hardware store.

Pour the concrete into the hole until it s 2 3 in. Set the post into the form and temporarily stand straight. The diameter of your post hole should be three times the diameter of your post. Make sure the post is plumb before allowing the concrete to set.

Setting the post 1. 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. Seal the gap between post and concrete. Put the post in the center of your hole.

This gap will widen with natural expansion and frost allowing water to pool here and cause rot. Seal it with a sealant that bonds to concrete and wood such as some silicone sealants or exterior acrylic latex caulk. Set the end of the post on top of your gravel in the middle of the hole. Pour the dry mix into the tube.

Once the initial curing is complete seal the gap around the base of the fence post. 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.