Venting Metal Roof Over Shingles

This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

Venting metal roof over shingles.

Let s take a look at the most common types of metal roofs for houses. One of the big reasons homeowners choose metal roofing is for the uninterrupted run of metal from the top of the roof to the gutter which reduces the risk of leaks. If it s slightly windy keep the steel downwind from you so a gust of wind doesn t knock you over. This aluminum cap is the finished product and does not require.

Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath. Metal roof over shingles condensation. It comes on an easy to install flexible mesh roll and is hand nailable with no complicated fitting wrapping nail gun adapters. This is what it looks like when you install a steel shingle roof system over an existing asphalt shingle roof.

3 install 1x4 purlins down over the shingles before installing the metal roof the third way to install a metal roof over shingles is by applying 1x4 purlins over the shingle roof. A shingle over vent is installed over the ridge of a roof and is covered over by asphalt shingle caps that match the surrounding roof shingles. Doesn t provide the flattest surface for the metal roofing to be installed over each course of shingles is about a 1 8 higher than the course just below it. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.

An affordable option and easier to lay than shingles tin is the most commonly used type of metal roofing. Also don t go up on the roof if it s windy. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Venting the eaves to vent the roof holes are cut in the old roof above the soffit which pulls air through the soffit vents underneath.

Whether you are looking to install a metal roof on a shed or a house it s important to know the difference in the various types of metal roofs available. Vent roofs with steeples towers or cupolas can be found in different buildings from barns to cathedrals. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. The building codes and building science for.

Metal roofs must be laid flat on a vapor barrier because steel will condensate if there s any air space underneath it.