Setting Fence Posts In Concrete Wall

When installing a fence on an existing concrete pad some fence installers prefer to core drill through the concrete and set posts the traditional way embedded in concrete underground.

Setting fence posts in concrete wall. One 50 pound bag. Then set your post in place and use a level to ensure that it s perfectly. Fast setting concrete is ideal for installing fence posts since it doesn t need to be mixed in a bucket or a wheelbarrow. The depth of the hole should be 1 3 1 2 the post height above ground i e a 6 foot tall fence would require a hole depth of at least 2 feet.

Using a rented core drill you can drill a hole through your concrete slab for each fence post. Setting posts one at a time is a good idea but make sure all your posts are braced and ready if using rapid set concrete. But before you decide to put one up yourself learn how to set your fence posts properly to ensure that. Dig post hole so diameter of the hole is 3 times the width of the post i e the hole for a 4 wood post should be about 12 inches wide.

After all the posts are set and the concrete has cured mix some extra quikrete fast setting concrete mix in a wheelbarrow or bucket following the mix to water ratio on the bag. Use a washer to prevent the wood being crushed at the surface. Caulk around the fence post base. Take the time to read these instructions carefully before getting started.

Rapid set concrete will harden in 15 minutes or even faster on a hot day. Use enough water to saturate the dry mix. As with all posts use a spirit level to check that the post is in a horizontal position before securing. Securing a wooden end post to a wall.

This will seal the gap between the concrete and post that s caused by freeze thaw cycles. Once you ve finished digging your post holes add about three to four inches of gravel into the bottom and compact it using a post or a 2x4. Apply high quality exterior acrylic latex caulk or silicone specifically designed to adhere to concrete at the base of the post. If the fence adjoins a masonry wall the first post needs to be attached to the wall using three expanding masonry bolts.

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 2 feet deep.