How to Install Stainless Steel Siding over Existing Siding

six colors and styles of steel siding
  • 8-60 hours
  • Advanced
  • 3000-30000
What You'll Need
Measuring tape
Aluminum foil underlayment
Insulation filler
Chalk line
Staple gun
Corner caps
Galvanized steel nails, 2-inch

Stainless steel siding may be a great solution to your siding repair job due to relatively low cost when compared to other siding materials. A building that is intended to be built with stainless steel siding is best installed by a professional because it is difficult to install. If, however, you have another type of siding and you want to update or replace it; then stainless steel siding is your economical choice. The article that follows will show you how to properly install stainless steel siding over existing siding for an effective repair solution.

Step 1 - Proper Measurements

Use the tape measure to determine the correct square footage of the area to be covered. Do not forget to measure all areas including gable ends, gambrel walls and dormer sides. Measure the size of doors, windows and garage doors independently and figure out the square footage and subtract that from the first number. You will not be covering these areas. You will be left a net square footage. Add 100 to that number for the amount of stainless steel siding you should purchase.

Step 2 - Prepare the Area

man brushing house siding

Clean the current siding of the home before installing stainless steel siding on top of it. Spend time filling in crack, replacing wooden siding and nailing popped siding down. You will also want to take off any old paint, molding, or caulking. Use shims to beef up low places in the wall. Take down your downspouts and remove any plants that hang down.

Step 3 - Insulator

Place the aluminum foil underlayment over the walls and staple in place. Use a product that is perforated or one that has a breather underlay to it. This will allow water vapors to escape. Cover the wall and wrap it around the corners. Where you need to start a new piece of underlayment you will want to overlap the sheets by two inches.

Step 4 - Install Stainless Steel Siding

metal siding

Use the chalk line to create a straight line through the center of the wall you are working on. Making sure your siding is in a straight line and even is very important. Measure the eaves and from below windows to the ground. This is to ensure the siding is parallel with the soffits. Stainless steel siding is not screwed into walls but is hung. The siding expands and shrinks in extreme weather.

If it is too tight it can snap. Hang the first piece along the chalk line through the center of the factory hole. Place a nail every 16 inches; in each stud but not within six inches of an overlapped panel. Make the siding snug but not tight and install it around the entire building along the chalk line. Create an overlap of two inches for each subsequent piece of siding. A 3/4 inch gap is needed at the corners. Continue adding the stainless siding going around the entire house before starting a new layer.