It’s a silly name, but a “butt joint” is an application technique where two pieces of material are “butted” up against each other. It is the simplest joint to make, and a butt joint can be either end to end or end to face.
Depending on the width of the wall, butt joints will occur where two pieces of lap siding come together, creating a vertical seam. LP® SmartSide® lap siding products are available in 16’ lengths, and can help reduce the amount of seams where a butt joint would normally occur when using shorter pieces.
Installing Butt Joints Using LP SmartSide Lap Siding
Whether you are installing your siding over code-approved nailable sheathing or directly to the studs, you will want to make sure you correctly space your butt joints. Properly spaced butt joints will allow for the siding to expand without putting pressure on the adjacent piece of siding.
Here are some Frequently Asked Questions for creating butt joints in new installation when using LP SmartSide siding. For full installation guidelines, visit LPCorp.com.
Repairing Butt Joints Using LP SmartSide Lap Siding
In the event of buckling due to improper installation, repair to the butt joints may be needed.
The remedy process is as follows. You can also view the process in this video.
If you have questions about installation or corrections to improperly installed LP SmartSide products, please contact LP by email or phone (1-888-820-0325) for more information and support.
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