How to Build Artificial Rain Gutters for Your Truck Cap




Introduction: How to Build Artificial Rain Gutters for Your Truck Cap

About: Traveler

I'm in a pickle,

I am living in a major US metropolis for a while and I don't have my normal work space or tools. I also am guiding a kayaking trip in just over a month and desperately need to be able to carry 2 kayaks to a launch site in a canyon on the colorado river. I also like carrying my bike and stuff on the out side of my truck... obviously i need to solve this problem.

my truck cap, a Wildernest camper, has spots to mount those thule or Yakima artificial gutters, but those pieces of stamped steel are EXPENSIVE and wont actually work very well in my application. so I set off to make some of them from materials I found at the local home-goods store.

here are the tools you'll need

-hole driller

steel cutter- hacksaw

center punch,

measuring tape

line scriber



file -to round the edges.

I did this whole project without power tools except for the hole-drilling part.

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Step 1: Gather Your Materials

This was the most difficult part. I really hated the idea of paying so much for the Thule artificial gutters. I found some c-channel at the local Homeless Despot that's 1/8" wall thickness the channel is 2" wide with a half inch lip. I also used a chunk of 1/8" bar stock to raise the c-channel up off the roof.

Step 2: Cut 4 of Each Piece

This is a tedious process if you don't have power tools. But it all can be done.

Step 3: Drill Holes

So this was difficult. I spent the most amount of time laying out exactly where the holes should be. The holes in all 8 pieces need to be the same. I painted each piece then scribed layout lines in the paint before punching divots with the center punch and drilling the holes

Step 4: Here's What They Look Like Together

I put a dab of silicone between the pieces just to adhere them temporarily to see how they fit. In this picture you can see how the bar stock sits under the c channel to give room for the gutter hook

Step 5: Mount Them to Your Roof

This is tricky.
Here are some ground rules.
Measure like 7+ times before drilling.
Lay out everything exactly how you want it before drilling. I tape up big sections of the roof to make sure I can get accurate layout lines. Mark, check, measure, think, measure again. And drill all your holes the same way. Use a square to eyeball your drilling angle if you're not sure you've got it straight up and down. Don't drill the holes in your so until you're 100% sure it's right... Silicone underneath the mounts around and in the holes. And don't exceed the rack or cap capacity limits. Ever.

Step 6: I'll Add a Photo Here of Them in Action

So I'm stuck in a major metropolis for a while and don't have my normal power tools with me. But I desperately need artificial rain gutters for my truck cap so I can mount a Thule or Yakima roof rack.
This is for TOP MOUNT artificial gutters. You'd have to use a different profile for side mount gutters.
Tools you'll need:

Some sort of steel drilling device (John Henry was a steel-drivin man)

Measuring tape
Center punch
Scribing tool (nail)
Wrenches to tighten bolts
Caulk gun or tube of silly-cone caulking

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    4 years ago

    Great instructable! Thanks for sharing your project!