How to Repair a Gutter Downspout

If your gutter downspout is in need of repair, the entire gutter system may not drain properly. It could eventually cause shingle or roof damage. Downspouts can become loose, rusty or separate from the section or gutter joint. Check gutter downspouts for any needed repairs in the spring and fall. Throughout the year repair any damaged areas as soon as they are noticed.

Difficulty: Moderately Easy

Instructions

Things You'll Need:

• Knife or thin screwdriver
• Drill
• 3/8 inch galvanized sheet metal screws
• Roofing cement

1. Probe the downspout with a knife or screwdriver to test for areas of weakness. Visually check for broken hangers or clips, rust spots and joint separations.

2. Push any separated sections together and fasten with two 3/8 inch screws. Use galvanized sheet metal screws to prevent rusting.

3. Remove and replace any broken anchor straps or clips. Make sure new and existing straps or clips are holding the downspout securely to the wall.

4. Apply roofing cement with a putty knife to seal any small holes. Smooth the area using the putty knife or your fingers.

Tips & Warnings

• Remove the elbow joint at the top of the downspout to check for any clogs in this area.
• Clogs that occur further into the downspout can be removed by using a metal snake or forcing a hard stream of water through the downspout with a hose.
• Proper gutter and downspout maintenance can double, and often triple, the life of your drainage system.
• Don't use screws longer then 3/8 inch or leaves and other debris can get caught on them.
• Downspouts that are badly damaged should be replaced.