Flat Roof To Sloped Roof Transition

I want to install a new epdm flat roof.

Flat roof to sloped roof transition.

We see this quite frequently in log home roofs with porches for example. Flat roofs aren t architecturally logical as rain and snow will shed much more quickly off a sloped roof. A very important detail is where the flat roof is connecting the pitch roof. Disadvantages of flat roofs than sloped roofs.

Pitch transitions are a common roof detail. Flat roofs has also many disadvantages than sloped roofs which are listed below. The roof plane goes from one pitch to a lower pitch. We are in the process of having a standing seam metal roof installed.

Low slope roofs are not totally flat their roof slope generally ranges from 1 4 12 to 3 12. A roof pitch transition is a line in the roof plane that changes pitch. Armourfix and armourvalley membranes must be installed and extended 60 90 cm up the main roof underneath the shingles in order to assure a waterproof connection. Flat roofs are not always advantageous.

This later lead to a lot more drywall damage. It turns out that our flat roof which is the roof over our 4 seasons porch and is an extension of the original house. There are two key details for the transition between steep and low slopes. See the illustration below.

The starter strip and first row of shingles must be applied 25 cm from the bottom of the slope roof or main roof above the slope transition. The distance that the lower roof membrane laps onto the steeper sloped roof and the need for isolation between incompatible materials. Flat roofs can form. Epdm flat roof to sloped roof transition i have a 12x40 rectangular flat roof that is met on all sides by a slate roof.

Of course you don t need to live in a modern house to deal with a flat roof. This latest project was in early december in lambeth ontario for a residential home that had an existing sloped or shingled roof that needed to tie into a ne. Low slope metal roofs require less material which reduces the overall load on the building s structure. Flat roofs are not possible to build for larger spans without providing columns or beams in between.

We also have a stack that comes out of the flat roof that has caused leaking as well. Low slope metal roofs have simple geometries and are easier and less expensive to install that medium to steep slope roofs. Flat roofs are more stable while resisting wind pressure. Has had major water damage to the roof decking and insulation that sits below the ib roof system.