The only correct way to fasten a ledger to a hollow wall is to sandwich the block with another ledger board inside the house.
Attach ledger board to concrete block.
Ledger boards are used to make joints between lumber structural elements and other materials.
Position the ledger against the wall and mark the anchor positions through the hole onto the wall.
There are no fasteners that are approved for attaching a deck ledger to a hollow block wall.
Things needed measuring tape.
Beginning from one end drive one 2 1 2 inch tapcon style concrete screw through each pilot hole in the board and into the cinder block.
Line up the pilot holes in the board with those on the block.
With the ledger board firmly in place against the cinder block it is now ready for you to attach the joist hangers and complete the deck installation.
Attaching a ledger board to concrete block this topic has 37 replies 1 voice and was last updated 4 years 1 month ago by jponto07.
A ledger is typically a 2 by 4 or larger piece of lumber attached to a wall or other surface with the use of fasteners such as nails or screws.
There are a handful of manufacturers that produce epoxy and other adhesive anchors that are tested for use in hollow cmu.
Hold the ledger board in place on the cinder block.
Can i attach my deck to a hollow block concrete foundation.
This wood strip allows other pieces to be joined to the wall with relative ease.
Drill through the brick veneer with a inch masonry bit in a hammer drill until you reach the wood frame.
To attach a ledger against a wall through brick veneer.
Repeat for each hole making sure that each screw is run all the way in until the head is flush.
Mark anchor locations on your ledger and drill through the board with a bit.
Five ledger board techniques explained and illustrated.
Yes there are products available for anchoring a ledger board to hollow concrete block foundations concrete masonry unit cmu.
Mark these locations on the wall with a pencil.
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Any one of these five ledger connection methods properly installed will give you a reliable long lasting deck that is secure.