How to Install a Rain Diverter

Nothing is more annoying than having to walk through a waterfall coming off your roof to reach the front door every time it rains.

Fortunately, there’s an easy and inexpensive solution to the problem.

Installing gutters is a common way to handle rain running off a roof — and make life a little easier the next time you come home during a downpour!

But if your house doesn’t have gutters, you can install a rain diverter.

A rain diverter — which is available at home improvement centers — is a specially made piece of metal flashing used to divert rainwater away from a doorway. This not only keeps you from getting wet but also prevents the door from deteriorating.

To install a rain diverter on your roof:

• Start by cutting the flashing with tin snips about 2-3 feet longer than the doorway you want to protect.

Metal rain diverter
Want stylish protection? Before installation, use white vinegar to etch the galvanized metal and then paint the rain diverter.

• Use white vinegar to etch the galvanized metal before painting it to match the color of the roof.

• Center the diverter over the area to be covered using a plumb bob or a string with a weight attached.

• Using a pry bar or putty knife, loosen the second row of shingles up from the edge of the roof where the diverter will be located.

• Carefully break the seal on a row of shingles above the doorway with a flat pry bar or putty knife.

• Slide the diverter under the row of loosened shingles.

• Tilt the rain diverter in the direction you would like the water to flow by angling one side down slightly.

• Carefully lift up the shingle tabs to keep from breaking them, and nail the diverter in place with roofing nails. Position the nails so they will be covered by the shingles and are a few inches up from the bottom edge of the overlapping shingles.

• Dab roofing cement on the nail heads, under each shingle tab, and in any gaps between the shingles to keep water from getting underneath the diverter.

• Press the shingles down to seal them back in place.

Now you won’t get soaked on the way to the mailbox when it rains!

Be sure and clean behind the rain diverter from time to time to keep leaves and other debris from building up.

Watch the video and follow the step-by-step guide for more information! 

Further Information


  1. May I send you a picture of a “diaverter” that was applied to my new guttering? I am no t pleased with the looks of it. Your input is appreciated.

  2. I tried to find the Rain Diverter at Home Depot, Lowes and two Ace Hardware stores. Home Depot did not have it near me. They had it closer to my parents home up in New England.

    However, I went to the Home Depot near me and found that they sold a Roof Edge Flashing that when turned over is exactly what I needed to use as a rain diverter and each 10′ piece cost less than $5. Here is the information on the piece I used from HD:

    Amerimax Home Products Model # 5500300120 Internet # 100032162 Store SKU # 625815
    B5 1/2 Aluminum Drip Edge
    $4.97 / each

  3. I have a patio roof with 2 downspouts, one on each end. when it rains hard in FL, 90% of water comes out of only one downspout, very little if any comes out the other one. My question is can I block off one that takes 90% to force the water to go to the other side. I think the roof is pitched more in one direction. The 90% side runs back to patio flooding that side. I put a 6-foot downspout to run further out, but it drains back. not a pretty sight. thanks for any help.



  5. Watching this video, I see a major flaw… Although a light drizzle of rain wouldn’t have an effect, anything else would backup above and under the section of tile, soaking the roof wood and destroying the roof. The diverter MUST extend from the roof, not be attached to the tiled area, to avoid water backing up and damaging the roof, even if the diverter is angled slightly (as it should be).

  6. You make it looks so smooth and easy. But my roof shingles don;t nicely and flexibly peel up so I can nail the diverter don underneath them. They are stiff and although I have “carefully” broken the seal, if I pull them up, they are too brittle and seem like they’re going to break before I can hammer the nail. What do I do?

  7. I have a valley in my roof which is directly over my front door. When it rains, it’s like a waterfall, impacting near the door itself, splashing on the bottom half of the door & causing the base of my front door to rot (needs to be changed). How do I install a rain diverter across this valley with half on each side of the valley to include the valley itself?

  8. I have a basement back porch covered roof made with wood blocks. I want to use the basement back porch. Do I need to replace the wood block roof to avoid rain water flowing through or is there any solution to use to avoid rain water?

  9. I added hallway off the edge of roof to add another room, the roof is covered with a metal roof tin nut hallway still leaks off eve inside. The eve cannot be removed. How to stop the water?

  10. I added hallway off the edge of roof to add another room, the roof is covered with a metal roof tin nut hallway still leaks off eve inside. The eve cannot be removed. How to stop the water?

  11. I have gutters, however in a couple of valleys, the rain comes down so hard and fast on my roof that the gutter just can’t collect it correctly. Is there a way to install something to break the speed of the rushing water so that the gutters can actually keep up?


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