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Tools and Supplies to Install Siding Underlayment
1 Circular saw
2 Jigsaw
3 Hammer
4 Staple gun
5 Measuring tape
6 Chalk line
7 Carpenter's square
8 Utility knife
9 Safety glasses
10 Work gloves

How to Install Siding Underlayment

Step-by-Step Guide: Installing Siding Underlayment Made Easy

Installing siding underlayment is an essential step in ensuring the longevity and durability of your home's exterior. Underlayment provides a protective barrier between the siding and the sheathing, preventing moisture from seeping in and causing damage. Here's a step-by-step guide to help you install siding underlayment:

Step 1: Prepare the Surface
Before you begin installing the underlayment, make sure that the surface is clean, dry, and free of any debris. Remove any old siding, nails, or screws, and repair any damaged areas.

Step 2: Measure and Cut the Underlayment
Measure the height and length of the area where you will be installing the underlayment. Cut the underlayment to the appropriate size using a utility knife or a circular saw.

Step 3: Install the Bottom Row
Start at the bottom of the wall and attach the first row of underlayment, making sure that it is level. Use galvanized nails or staples to secure the underlayment to the sheathing. Space the nails or staples 6-8 inches apart along the edges and 12-16 inches apart in the field.

Step 4: Install the Remaining Rows
Overlap the next row of underlayment over the first row by at least 6 inches. Continue installing the underlayment in this manner, working your way up the wall until you reach the top.

Step 5: Cut Around Windows and Doors
When you reach a window or door, cut the underlayment to fit around the opening. Make sure to leave a 1/4-inch gap between the underlayment and the window or door frame to allow for expansion.

Step 6: Seal the Edges
Once all of the underlayment is installed, seal the edges with a high-quality tape or sealant. This will help to prevent moisture from seeping in around the edges.

Step 7: Install the Siding
With the underlayment in place, you are now ready to install the siding. Follow the manufacturer's instructions for installation, making sure to leave a small gap between the siding and the underlayment to allow for expansion.

In conclusion, installing siding underlayment is an important step in protecting your home's exterior from moisture damage. By following these steps, you can ensure that your underlayment is properly installed and ready for the next step in the siding installation process.