Walls Built On Top Of One Roof To Support Another

Have known of several attempts to cover an old roof with a new one and it creates all kinds of problems.

Walls built on top of one roof to support another.

Attach a horizontal step to the two planks upon which to rest the sheathing. You see these headers over all windows and doors they give the wall enough strength over the window or door to support the roof. 2 3 point trusses being common here. All of the exterior walls go up following this same basic pattern.

Build a stud frame wall at the high end of the proposed roof structure. If it was a low pitch roof i would guess they raised the lower wall by way of cripples wall and shear crossbrace depending on height etc. I totally agree remove old roof and do it right. Place several pieces of sheathing onto the step so the stick up above the roof line.

A gable is an extended section of roof that extends from one wall perpendicular to the roof. Slopes above 3 inches fall to 12 inches run can use shingles. However if there is an unfinished space like an empty attic without a full floor the wall probably is not bearing a load. Place the top of each starter shingle firmly against the bottom of the shingle immediately above it and even with the eaves then nail it into place.

You can then stand on the wall top plate or the rafters and lift each piece up as needed. One of my neighbors just changed the pitch and span of his roof. Best to salvage as much structural lumber from the old roof and build it right. Types of trusses a lil out of sop but trusses are supposed to bear at specific points ie.

If there is another wall a floor with perpendicular joists or other heavy construction above it it is probably a load bearing wall. When a header spans more than 5 feet you find double full length studs on either side of the header instead of the single studs seen here. Use 1 5 or 1 75 inch roofing nails. Residential structures framing systems typically consist of the roof structure that supports the roof.

Anchor the wall to the existing roof deck. Less going up and down a ladder. By including an extra joint in each rafter a mansard roof slopes in such a way as to allow for living space in the area of the roof. Deck exterior and interior load bearing walls beams girders posts and floor framing.

A 2x4 bearing wall in the middle of the house was the last wall to be built along with the first floor exterior walls. Shear walls or steel moment frames in homes with large windows or other large openings provide the strength to resist lateral loads.