How to Install Gutter Downspouts
Learn how to install gutter downspouts with our detailed step-by-step guide. Follow our easy instructions to get it done right.
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0 of 6 steps completedStep-by-Step Instructions
1 Step 1: Plan Downspout Locations
Step 1: Plan Downspout Locations
Place downspouts every 30-40 feet of gutter, direct away from foundation.
2 Step 2: Cut Hole in Gutter
Step 2: Cut Hole in Gutter
Mark outlet location, drill pilot holes, cut opening with tin snips or hole saw.
Tin Snips
Aviation snips for cutting gutter material
Gutter Outlet
Drop outlet fitting for connecting downspout
3 Step 3: Install Outlet and Seal
Step 3: Install Outlet and Seal
Insert outlet into hole from inside gutter, seal with gutter sealant.
Gutter Sealant
Waterproof sealant for gutter connections
4 Step 4: Attach Downspout to Outlet
Step 4: Attach Downspout to Outlet
Connect top of downspout to outlet, secure with sheet metal screws.
Aluminum Downspout
10-foot section of downspout (white or brown)
Sheet Metal Screws
Self-tapping screws for gutter assembly (box)
5 Step 5: Mount Downspout to Wall
Step 5: Mount Downspout to Wall
Attach downspout straps to wall every 6 feet, secure downspout in straps.
Downspout Straps
Mounting brackets for securing downspout (4-pack)
6 Step 6: Add Downspout Extension
Step 6: Add Downspout Extension
Attach extension or splash block to direct water at least 6 feet from foundation.
Downspout Extension
Flexible extension for directing water away
Splash Block
Concrete block for directing downspout water