Over Framing An Existing Roof

Installing a new roof over an existing one also called a layover or nailover is often possible although not always the best option a properly installed layover roof can look and function as well.

Over framing an existing roof.

The exposed edges of the 3 layers of rigid insulation are no longer exposed. Replacing a roof can be expensive but if a roof contains only a small slope it s possible to raise the roof pitch of a house by building a roof over the old one. Adding a gable roof to an existing roof is no small project and is best left to the professionals. How to tie a additions roof to existing roof roof designs to attach to existing home how to construct a roof from an exsisting shead how to attach a deck roof to existing roof how to add a roof over porch cost to tie into existing roof attache porch roof on house attach shed roof to house adding a roof to screened in porch adding a roof to existing.

In the case of a lean to roof over an addition the existing rafters will have to be cut away to accommodate the addition and the shed roof will require support where it ties into the framing of. The run or half the building span is the base of the triangle. After installing the rafters we still had to extend the porch roof back over the shed roof creating a valley on either side. Several methods exist based on the current roof design.

Blind valleys simplify framing. However you can have an understanding of the work being done or even do it yourself if you have prior experience with roofing projects. This new roof with a higher pitch can be accomplished with premade roof trusses and typical asphalt shingles. Metal roofing materials are available in several styles that require different fastening applications but are most commonly screwed to the roof framing or sheathing material.

Lay a metal roofing panel over the existing roof material in the bottom corner of the roof surface and fasten to the roof according to the metal panel instructions. The rise or height of the roof at its peak is the altitude of the triangle. To keep the porch roof framing as simple as possible we installed a structural ridge supported by posts at each end with the common rafters landing on top of the ridge.