Originally built in the Netherlands, the gambrel roof is most commonly used on small buildings, such as garages, barns or pool houses. It has a slope passing from a steep pitch to a smaller slope that is on the upper level roof.
The best roofing services providers like Roofing.com, in the field know that this type of roof needs special attention, especially when it comes to choosing the best shingles for it, because there is a weight limit that the roof’s structure can withstand, and that limit cannot be exceeded.
Therefore, the best shingles for this type of roof are the lightweight asphalt shingles. All you need, in order to install them is an OSB sheathing, some drip edges and some galvanized nails.
- Remove the old roof. This will help you stay within the weight limit.
- Install multiple layers of shingles on top of the barn.
- If you reach the slope transition, and the shingles do not match it, cut them across.
- After you are finished with the top, make sure you put shingles properly on the rest of upper gambrel transition, also in layers.