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How to Install Seamless Gutters

Many homeowners choose seamless gutters because they like the clean look they provide. If you’re going to install your own seamless gutters, make sure you ask a couple friends or neighbors to help you do so, as seamless gutters come in long sections. Here, our gutter installation professionals tell you how to do it:

  1. Place your ladder against your roof and climb up to where your gutters will be installed.
  2. Next, inspect your fascia to make sure it’s not damaged and can support a new gutter system.
  3. If you’re replacing old gutters, use your measuring tape to measure the length of your old gutters so you know how long your new gutters should be.
  4. If, however, you’re installing new gutters, use your measuring tape to measure the length of each side of your home.
  5. As you measure, mark 1/4″ below your measuring tape at every 10 feet. (This is to ensure the slope of your gutters is at least 1/2″ every 10 feet.)
  6. Next, use a hacksaw to cut your gutters to the appropriate lengths.
  7. After that, determine where you’ll put your downspouts.
  8. On your home, measure where you want your downspouts to be, then make the same measurement on your gutters.
  9. Center your downspout outlet and trace it onto your gutter.
  10. Cut 1/16″ outside of your traced line, then pre-drill 1/8″ holes in your outlet.
  11. Next, lay a bead of gutter sealant around the opening, then attach your outlet and rivet it to your gutter.
  12. Install end caps at the ends of the gutter segments that won’t have a downspout.
  13. Begin installing your gutters by lining them up with your slope measurement and attaching them with a hex screw every two feet.
  14. Afterwards, slide your new or existing gutter flashing underneath your shingles and nail it down.
  15. Attach gutter hangers to help keep your gutters in place, then attach your downspouts.

Tools & Materials

  • Ladder
  • Measuring Tape
  • Seamless Gutters
  • Hacksaw
  • End Caps
  • Downspout Outlets
  • Drill
  • Gutter Sealant
  • 1/8" rivets, Rivet Gun
  • Hex Screws
  • Gutter Flashing
  • Hammer, Nails

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