Why Does Siding Fail?
Siding usually fails due to installation mistakes, not the material itself. The biggest problems are poor moisture control, improper fastening, and weak structural support behind the siding.
1. Poor Moisture Management
Siding sheds water but is not fully waterproof.
Common mistakes:
Missing air and water barriers
No drainage pathway
Improper sealing
Trapped moisture can cause mold and make the siding decay. LP WeatherLogic® Air & Water Barrier Sheathing helps manage moisture while providing durable structural support.
2. Weak or Damaged Sheathing
Siding performance can depend on what is underneath it.
Common mistakes:
Using low-quality panels
Installing over wet materials
The LP® Structural Solutions portfolio is built for strength and jobsite durability.
3. Incorrect Fastening
This includes overdriven or underdriven nails, and poor nail placement. This leads to loose and warped exterior siding.
When installing LP® SmartSide® Trim & Siding, follow all product literature for fastening guidelines.
4. No Room for Expansion
This occurs when the siding panels are installed too tightly and have no spacing for movement.
Overtime, it can cause:
Cracking
Buckling
Warping
When installing LP® SmartSide® Trim & Siding, where siding butts window trim, door casings, etc. leave a 3/16-inch gap and seal.
How to Prevent These Mistakes
Use proper moisture management systems like the LP WeatherLogic® Air & Water Barrier Sheathing
Install high-quality structural sheathing
Follow correct fastening and spacing directions
Siding performs its best when the entire wall system works together!
For more information on how to install LP® SmartSide® Trim & Siding to prevent these common mistakes, visit our Siding Installation Instructions document.
