How to Fix a Shed Roof Leak: A DIY Guide

Shed roof leaks are a fairly common occurrence, especially in older sheds. Follow these tips to learn how to fix a shed roof leak, and get more life out of your old shed.

The purpose of a shed is to keep your valuables dry and protected. I have some very simple suggestions for you that will ensure your shed provides dry protection to your valuables. The first thing to do is to check the roof of your shed for any leaks. Some people find out that there is a leak too late. It is a terrible feeling to walk into your shed and find your valuables are damaged and ruined due to water leaks. To avoid this situation, I suggest test your shed on a sunny day. Simply hook up a garden hose, turn on the water, and begin letting the water flow all over the roof of your shed. Do this for a few minutes, making sure all the roof has been completely immersed with water. Cut the water off, and then go inside your shed for a thorough inspection. Take your time looking on the floor, the walls, and the ceiling for any signs of water leakage. If you find there are signs of leakage. Take your time to identify the leaky spots. There could be more than one. By doing this on a sunny day, you can more easily see leaks or actual holes of light shining into your shed. Once all of the leaks have been identified, you may want to mark them with a marker, fingernail polish, or any that will remind you where they are located. Once they are marked, we can start fixing them.

The first thing to look at is the type of roof on your shed. If you have a shingle roof, you may have damaged shingles that will need to be replaced. That is a process where you need to follow very specific steps which we will not be discussing in this article. I will discuss some quick fixes in the next paragraph.

Most sheds use an aluminum or steel roof. Both of these styles are metal sheets that are overlapped and screwed down to the rafters inside the shed. Check to see if any of the screws need to be tightened. This could be the source of your leak. If you find this is your culprit, I suggest squirting some silicone along the loose seams and then tightening the loose screws. This will ensure a much tighter seal. If you see small holes in your roof causing a leak, you can squirt silicone in those holes as a quick fix or you can replace the actual sheet of metal. When replacing sheets of metal, we suggest using the silicone on the edges of your sheets before attaching the new sheets to the rafters. Another quick fix is an aerosol spray called “Flex Seal”. We tried it on damaged shed and it worked as advertised. The cans that we had sprayed black, so I suggest spraying the application on the inside of your shed. Otherwise, you will have a black eye on your building. If you want a quick fix on black shingles, you can spray the top of the shingles on your building. I suggest starting small to see if there is a noticeable color variation.

Once you have completed the roof repairs and given proper drying time, grab the garden hose and begin the process again. If you find more leaks, repeat the repair process until you are confident that the leaks are fixed. Once you are sure the roof is leak proof, point the water hose at any windows and doors on your shed. Once again make sure you give a thorough amount of water then go inside and inspect once again. Windows and doors that leak can either be minor or major. If the leak is major, you will need to replace the problematic window or door. If the leak is minor, you can use our quick fix approach with silicone gel or the “Flex Seal”. Good luck with your inspection and repair.

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