The holes need to be at least three inches deep into the wall.
How toattach roof to concrete wall.
The ledger is needed to properly attach the perpendicular roof trusses to the top of the structure.
Wind loads are one example of the requirements.
Step 5 attach the ledger board to the wall.
Insert the expansion anchors into these holes so that they are flush with the wall.
When joining new concrete work to old concrete work the joint will always develop a crack and will be a point of expansion and contraction.
If the area where you are planning to use the cinder blocks is already covered with a concrete pad you can easily build a cinder block wall right on top of the concrete.
Concrete screws come in 3 16 and 1 4 inch diameter in lengths up to 3 3 4 inches.
Repeat this step to attach the remaining trusses.
They can be used in concrete block and brick.
Cinder blocks are a great tool for building garden walls or storage structures in your yard.
To install roof flashing to a masonry wall or to a chimney you will need to follow specific instructions to ensure a leak proof seal.
Cmu concrete masonry unit block is an extremely strong form of construction.
Often you need to secure a piece of timber to a wall when doing some decking.
Failure to create an attachment point will result in roof failure especially in high winds.
The connection between the cmu block and the roof system has to be strong enough to withstand storms with high winds.
Set the ledger back on top of the wall.
Measure and mark the location of the roof trusses.
Walls that are constructed of concrete block that need to be covered with a roof will require the use of a ledger.
There are some requirements that must be taken into account when connecting to wood members.
Any structure that you build will be more stable when it is set on a solid foundation.
Set the roof truss on each mark.
Here are some step by step directions to installing this roof flashing yourself.
However the do it yourselfer can attach a wooden roof to cinder block with little or no training in one to two days depending on the size and scope of the project.
A ledger is a horizontal board that is attached to the top of the the wall.
Both hex head and phillips head styles are available.
Over time this expansion and contraction especially if they occur at different rates due to the sections of concrete being exposed to different temperatures will work the sections apart and the crack will widen.
Secure the ledger by driving a concrete 3 1 2 inch concrete screw into the block.
Attaching a wood roof to a cinder block building is difficult but possible.
Step 4 drill the holes in the wall.
Using a 3 8 masonry bit in the hammer drill drill the holes through the wall in the places that you marked.
