How To Attach A Flat Roof To An Existing Roof

Attaching below the ridge.

How to attach a flat roof to an existing roof.

Adding a roof to your porch provides you and your porch with much needed protection from the sun wind rain snow and ice. Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option. Several methods exist based on the current roof design. If attaching a patio roof to a ledger beneath the eaves does not allow for enough headroom you can set the new patio roof s rafters on the wall s top plate.

Staple on roofing paper and shingle the new shed roof starting at the bottom and working up. On a two story house you can usually tie the ledger into a band joist also called a rim joist located between the floors as shown below. However you can have an understanding of the work being done or even do it yourself if you have prior experience with roofing projects. However you must ensure the new porch roof matches with your existing roof seamlessly to enjoy these benefits.

Existing patio is outside the dining room on the west side of the house. Fix the back channel to the fascia boards underneath the gutter directly. This video looks at a couple of design options including attaching the roof ledger below that of the existing eaves and setting the patio roof atop the existing roof. How to install a roof over an existing roof.

Adding a gable roof to an existing roof is no small project and is best left to the professionals. Add decking atop the roof and nail on metal flashing where the shed roof joins the existing roof. Here are 7 different ways of attaching a patio roof to an existing house that you can apply. The patio is essentially unusable on a sunny afternoon in the summer.

Reinstall the removed shingles or use new shingles to cover the area of the old roof which was exposed. This method may be one of the most ubiquitous ways of attaching a patio roof.