Water that infiltrates a lean-to style shed not only risks the integrity of the lean-to but also the structure it leans against. Waterproofing on type of shed is important, but it is doubly important with a lean-to style shed. How to Finish the Lean To Roof Leading EdgeĪ lean-to shed leans up against another structure. A drip edge that goes over the shingles ensures felt will not be exposed to water via the top edge. While roofing felt provides a last line of defense, it is better to keep water off it altogether. High winds and heavy rain could potentially get under the top layer of shingles. This method reduces the need for roofing cement along the entirety of the top edge and gives water an improved path down the surface of the roof. Since the drip edge goes over the previous course of shingles, any water that goes under the shingle strips will be directed to the other shingles, below. After you seal your last four nails with roofing cement, you will not need to seal along the top edges of the shingles as you did above.Continue shingling as you did in the manner described above, with your shingle strips.Otherwise, the drip edge will not sit properly against the top edge fascia board. Before you install the drip edge, be sure the shingles are flush with the top edge. Install drip edge so that the top lip goes over the last course of shingles.If the strip is beyond the edge, then there is not enough room for another course of shingles. Your goal is to get your last row of shingles as close to the top edge as possible while keeping the adhesive strip on the surface of the roof. On the other hand, if you have not yet completed your shed roof, then consider this method as a sturdier alternative to typical top row shingle installation. The method described above is an excellent way to finish your shed roof. Adding more nail holes to a finished roof is not recommended. If you’ve already put your drip edge on the top edge of your shed, then don’t move it. However, there is a better solution for finishing the top layer of shingles on your shed roof and it involves putting on your top edge drip edge over the next-to-last layer of shingles. When installing your last row of shingles, we are basing this on the assumption that you’ve already installed your drip edge. You will apply the cement to the parts of the shingles that are exposed. Trim the edges on the rake and top edge so that they are flush with the other shingles.Īpply the same roofing cement to the edges of the shingles along the top edge. Use bitumen-based roofing cement to cover each nail head. Nail the shingle with four nails – two in the adhesive stirp and two at either corner. When you get to the other edge, you will have one shingle strip with exposed nails. Remember, you are laying these in a perpendicular fashion so that the adhesive strip points towards the top edge of the shed. Nail each shingle strip so that it overlaps the nails of the previous shingle. An overhang of about 1 ½” beyond the top edge is ideal. Lay your first shingle strip so that it is flush to the rake end and covers any exposed nails of the shingles below. Each strip should be wide enough that, when placed perpendicular along the top edge of your shed roof, it covers the nails of the previous course of shingles. If the adhesive strip of the shingles is beyond the top edge, then avoid laying another row.Ĭut your shingles into strips. You’ll use your utility knife to trim the edge so that it is flush with the top edge of the roof. Your last course of shingles should come as close to the top as possible. This method will ensure your shed is completely weatherproof. Instead, you are going to cut your three-tab or architectural shingles into strips to minimize the number of exposed nails.īelow is how to install the last row of shingles on a standard shed roof. You could, but you would have tons of exposed nails, which is a recipe for leaks. Finishing the last row of your shingles isn’t as easy as throwing one last course of shingles on and calling it a day. Right now, let’s look at a regular, single sloping shed roof. Remember, a lean-to shed is just that – a lean-to! It leans against another structure, like your house, garage, or another shed. Later on, we’ll investigate the finer points of applying shingles to the top row of a lean-to type shed. Shed roofs come in all shapes and sizes, but we are looking specifically at two types: single slope and lean-to. How to Finish the Top Edge of a Shed Roof How to Finish the Lean To Roof Leading Edge.How to Finish the Top Edge of a Shed Roof.
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