By | February 14, 2020
Reading Time: 7 minutes

DIY Rain Gutter

I need a DIY rain gutter and it needs to match my existing gutters. Putting up something less than a full match will only scream out “Look at me I’m different”. Well, it will scream out to me. I’ll need one more thing. It will be important to remove the gutter in one piece, not cut up. More on why this is important later.

Rain gutter with spike and ferrels

Rain gutter with spike and ferrels

Criteria for the new gutter

I’m going to need a good eye for detail on the existing gutters. The new gutter is a replacement gutter so that means the details must be exact.

The mounting needs to be the same. I need to use spikes and ferrules(see photo above) as that is what is on my old gutter. Also, that means the ends must extend past the roofline edge by an inch and the end cap angle of the new gutter must match exactly. I’m going to need a template to match the ends perfectly. All of my gutters are made of steel so that is the material I am going to be working with, but the methods used in this article will work with any type of gutter material.

This is a simple DIY rain gutter(basically a straight gutter with no inside or outside turns). Using off the shelf parts makes this a nice project that I can handle by myself with only some help needed for the removal and installation for hanging the gutter. The majority of the work is accomplished on the ground on a set of saw horses.

Tools needed

How to create a template for the gutter end

Template the ends of the gutter if needed. If you need a template for the end of your gutter this is the method I used to create one. Template for the gutter end.

Criteria for a duplicate gutter

I looked closely at the gutter and this is what I found. The end of the gutter is cut at an angle and the top of the gutter is extending beyond the roofline by about an inch. This gutter is a simple straight gutter with no inside or outside turns.

Remember that the gutter was taken down in one piece? I’ll need to make sure that the mounting spikes are in the same location and that the downspout is going back into the same place.

I  can take measurements from the old gutter and transfer them to the new gutter. All of this done while on the ground on a set of sawhorses.

A few upgrades

There have been some new materials introduced since the old gutter went up. I’m going to incorporate these new materials into the new gutter. They will improve the life of the gutter for many years and are not visible.

I intend to use a silicone-based gutter sealant at the seam, end caps, and outlet to seal them. The upgrade is going to be a rubberized paint inside the gutter that will shield the metal from corrosion. But before I apply the rubberized coat the whole thing is covered in a red oxide primer for added rust protection of my new steel gutter. I have chosen a brush on primer so no fancy equipment is needed. Just a throwaway paintbrush and some sawhorses on which to place the gutter while it’s being assembled and painted.

Creating a good splice

The gutter material comes in standard lengths. My new gutter is going to be longer than that standard “off the shelf” length. So somewhere along the gutter, there will need to be a splice. I could buy a splicing piece made by the manufacturer. But I’ve used those before and they make for a very flimsy gutter and worse they look very bad. Creating a good strong(non-flimsy) splice in the gutter without it being obvious is my goal. This splice will need a special technique. The execution of this technique will leave you with a professional installation look to the finished gutter.

Related Article: A Strong Rain Gutter Splice Technique

The splicing technique demonstrated in the above article is very strong. The two pieces of the gutter overlap by twelve inches. This creates a very strong non-flimsy splice. The splice is not obvious from the ground. Also, I like that the rivets holding the splice together are not visible from the ground. I used this spicing technique and it is simple, extremely strong and very easy to execute.

Which end shows

I noticed that when the two pieces came together at the splice the end that had not been cut was on the inside. If you’re not very good at cutting a straight line your cut is going to be visible if it is on the outside of the splice. I would recommend that the uncut factory end be visible(on the outside of the splice) to get the best finished look. This means that you will need to notch the factory uncut piece as that is the part of the gutter that will show.

One last thing on splice location

If your gutter is going to have a splice and it’s a short section of gutter you will need to consider where you want the splice versus the downspout. For overall gutter strength, it would be best to have the splice at the opposite end of the gutter away from the downspout.

Installing End Caps

A short video below on installing end caps gives you the how-to and reasons for the proper application of the silicone caulk. He also has a few suggestions on how best to attach the end cap to the gutter.

Downspout Outlet/pop rivets

Downspouts and elbows are made to slip together. When assembling downspouts, the piece on top slides into the next lowest piece, and right on down the line, so water won’t leak out as it flows down the spout. REPLACING GUTTERS AND DOWNSPOUTS

Depending on your gutter length you’re going to need at least one downspout or maybe more. The procedure he uses(see video below) is exactly what I used for attaching my outlet to the gutter. I like that the flap he creates gets pop-riveted to the outlet on the side then that whole thing goes into the downspout. It reduces any chance of a leak because all the rivets are in the downspout.
In the video, he opens the downspout outlet hole and attaches it while the gutter is in place, I chose to open up the downspout hole and attach the first elbow on sawhorses. It just felt safer on sawhorses.
Also, I really like that he shows you how to reduce the size of a cut off piece of the downspout so that it can be slipped into another piece of a downspout. He uses a simple pair of needle-nose pliers to accomplish this task.

This second video shows you how to attach different types of outlets to the gutter using a different method.

Materials needed

Specification sheet for Valspar® Anti-Rust Red Oxide Primer

How to create the DIY rain gutter

Prework

  1. Make any templates that you may need.
  2. Measure the gutter length(all measurements should be taken from the same end of the existing gutter) and recorded.
  3. If your gutter is using spikes and ferrules measure to each spike and record.
  4. Measure from the end of the gutter to the downspout and record it.
  5. Carefully remove the old gutter from the house.

Create the gutter

  1. Layout the old gutter on a set of sawhorses.
  2. Use the template and mark and cut the angle needed for each end cap.
  3. Install each of the end caps with silicone and pop rivets.
  4. Measure for the two pieces(if you need a splice) making sure to include your overlap and cut.
  5. Notch the uncut gutter piece.
  6. Join the two pieces together and verify the overall length is correct to adjust(slide in or out as needed) as necessary.
  7. Mark the gutter at the inside edge and take them apart and apply the caulk.
  8. Assemble the two pieces and drill and pop rivet.
  9. Cut the downspout hole and attach the outlet with silicone and pop rivets.
  10. Drill holes for spikes in the face of the new gutter as per previous measurements.

At this point, your DIY rain gutter should be complete. Paint as needed.

Downspouts

Any DIY rain gutter is not complete unless it has a downspout. There are two options for downspouts. You can buy the pieces to make your turns/elbows as needed or you can create your own turns/elbows as illustrated in the two videos below.

I find it easier to use off the shelf pieces to create a new downspout. For this project, I reused my existing downspout. I simply used new downspout bands to reattach the downspout to the house.

If you’re going to create your own downspouts from straight run material then the two videos below will show you how to create them using a square and tin snips. Creating downspouts is all about measurements from the gutter to the wall and the downward run to the last turn away from the house.

Once you have those measurements then it’s time to cut the material. Be sure that you make the cuts to keep the seam out of sight. Make certain that you know where the parts will be before making that cut. The old adage measure twice and cut once is very applicable.

Part One

This video shows the techniques for creating the elbows. He mentions the safety equipment(gloves) needed.

Part Two

This second video shows the pop riveting techniques and how to seal the cuts properly.

Conclusion

If you’re in need of a DIY rain gutter and it is a simple straight gutter you now have the information to create the new gutter. It should last you a very long time with no leaks. All you need is a friend or two to help you remove the old gutter and install the new DIY rain gutter.

Related Articles: Why Choose Steel Rain Gutter

Screens and Cleaning Out the Gutters


RayC.
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