Attaching Posts To Deck Blocks

Can i attach my deck to a hollow block concrete foundation.

Attaching posts to deck blocks.

With the right post anchors or hardware you can get some impressive aesthetic results and greatly reduce the potential for rot. The idea of quickly installing a post where you want on either a wood framed deck concrete or even stone surface is appealing. However concrete deck blocks can be used without restriction for a freestanding deck that s not attached to your house. Successfully attaching a ledger to a cinder block can be accomplished by using the right hardware.

This is the foundation of the deck and if not properly installed will result in failure of part or the entire deck. The main difficulty in using deck blocks with posts is that the indentation for the posts. There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow cmu. This allows the insertion of a concrete bolt designed to secure a metal post anchor to the block.

Unlike a concrete footing that distributes the weight of the structure over a large area piers concentrate the load to a small area. Use blocking and bolts to create a strong railing connection at the rim joist. Typically made of two by lumber ledger boards attach horizontally to an existing structure such as a house or garage and are used to join a deck roof or other add on to the original structure. They should be laid out similarly to deck posts with the caveat that the spacing should be a little closer together around five feet or so beneath the beams.

Deck framing page 16 beam to post page 12 post to concrete page 11 joist to beam page 14 a system of key connections throughout the deck framing also known as a continuous load path is essential to building a safe code compliant deck. Assume that all deck piers and foundation blocks require some digging. Yes there are products available for anchoring a ledger board to hollow concrete block foundations concrete masonry unit cmu. Today s options for attaching posts to deck surfaces.

Use bolts not nails or screws to fasten railing posts to deck framing. Incorrectly attaching guardrail posts. When this system of connections is made properly loads are transferred. Deck blocks stand in for the posts or provide a foundation for a post.