How to Replace & Seal Downspouts and Gutters

Written by alexander callos
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How to Replace & Seal Downspouts and Gutters
Gutters and downspouts need to be replaced over time. (Jupiterimages/ Images)

Gutters and downspouts are located on nearly every home. Eventually they will become worn down. Harsh climates and rain can cause your gutters to sag and become damaged. Instead of installing an entirely new gutter system, one alternative is to replace the damaged gutters and downspouts. When you are replacing them, it is always necessary to properly seal them. This will help ensure they last longer and keep water away from your house in the process.

Skill level:

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Things you need

  • Power drill
  • Gutter screws
  • Ferrules
  • Roofing cement
  • Brush
  • Drop outlet
  • Screws
  • Gutter screws
  • Elbows
  • Ladder

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  1. 1

    Loosen all of the screws holding the gutters in place with a power drill. Remove the screws from the fascia and set the damaged gutter aside. Move down the house and remove all the screws holding the gutters in place. Pull the downspout off the drop outlet and loosen the drop outlet from the fascia.

  2. 2

    Line up a new gutter and secure it in place with 7-inch gutter screws. Pre-drill 1/8-inch holes in the front of the gutter every 18 inches. Push the screws through the holes in the front of the gutter and place a ferrule over the screw along the inside of the gutter. This sleeve will slide right over the gutter. Screw the gutter into the fascia. Move down the entire piece and secure the gutter to the fascia the same way.

  3. 3

    Apply a thin bead of roofing cement along the end of the gutter and install the second gutter next to the first. Overlap the gutter by 3 inches so the roofing cement can help seal the two pieces together. Repeat the process on the remaining gutters, placing roofing cement on the end of each one.

  4. 4

    Attach a drop outlet to the roofing cement on the final gutter and screw the drop outlet to the fascia with two 1 1/2-inch screws. Slide an elbow over the downspout outlet heading down toward the ground and secure it in place with gutter screws.

  5. 5

    Brush roofing cement over the top of the elbow. Slide the downspout over the elbow and push down firmly to secure it in place. Attach the downspout to the elbow with four equally spaced gutter screws and run the downspout down the side of the house to the ground.

Tips and warnings

  • Always be careful when working on a ladder.

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