Table of Contents
Step 1 – Check Your Local Building Codes. Step 2 – Evaluate The House and The Existing Roof. Step 3 – Check the Porch Level. Step 4 – Building the Supporting Posts. Step 5 – Attaching the Valley Board. Step 6 – Attaching the Top Plate. Step 7 – Attaching the Rafters. Step 8 – Covering the Roof with Plywood and Shingles.
How do you attach a porch roof to a house?
Cut one side of the horizontal roof beam on an angle so that the rafters sit flush on it. Using your nail gun, attach the horizontal beam and cut the two outer rafters to sit flush on top of the existing house roof. Install the two outer rafters and attach a plain rafter beam to the very edge of the existing roof.
How do you join two roofs of different pitches?
Position the flashing between the two roof pitches. Slide the right edge of the flashing under the highest roof pitch. Place the 2-by-4-inch piece of lumber along the center of the flashing. Gently bend the flashing using the edge of the lumber until both sides of the flashing match the slope of the two roof pitches.
How do you join two roofs together?
How to Join the Roof Pitches? Step 1 – Preparing the Area. Step 2 – Measuring the Length of the Joined Area. Step 3 – Prepare a Piece of Flashing Material. Step 4 – Place the Flashing on the Meeting Point. Step 5 – Sealing the Edges of The Roof with Lumber. Step 6 – Apply a Bead of the Sealant Material.
How do I put a roof over my existing roof?
Roofing over an existing roof is also called reroofing or an overlay. It is the process where roofers install a new roof over your existing one, i.e. add a new layer of shingles, which means that there is no tearing off of the old roof.
Can you mix roof pitches?
Unless you’re absolutely sure of the effect you’re after, avoid combining different roof pitches. More often than not, varied pitches look disorganized or, worse, like a construction error. Stick to a uniform pitch, and rely on the size and arrangement of roof masses for effect.
Can a roof have 2 different pitches?
It would seem that lining up the fascias and cornices so you have equal overhangs on both pitches would be impossible, since the rafters of the two roofs extend beyond the plate at different angles.
What is a combination roof?
A combination roof is exactly that – a combination of different types of roofs and design features. For instance, a home could have a gabled roof with a skillion over the porch, or a hip roof with a gabled front porch, or a gabled roof with a domed cupola – or any combination of styles.
What is it called where the wall meets the roof?
A headwall is a level junction where a roof meets a wall. This illustration shows proper flashing at a headwall condition. Headwall flashing should extend up behind the exterior wall covering and down over the roof-covering material, as you see here.
Can you frame a roof over an existing roof?
You must not build the new roof directly over the old. A new coat of shingles over decaying shingles will cause your roof deck to decay. The solution is changing the roof pitch or building a new roof at a higher pitch than the old roof. The roof pitch is how much the roof slants.
Can you build a new roof on top of old roof?
When it’s time for a new roof you have a couple options to pick from, you can either remove the old roof or replace it with a new one. You can also build over your existing roof. Roofing requires a flat surface so the curled shingles will need to be removed.
How do you install rolled roofing over existing roofing?
Before you begin, thoroughly clean the existing roof, removing any debris like leaves or sticks. Then, install a layer of roofing felt to provide a sturdy base for the new roll roofing. Once this has been done, the roll roofing can be installed in the same manner as if it were over bare roof sheathing.
Is it expensive to change the pitch of a roof?
The costs of changing a roof pitch can depend upon numerous factors but will be anywhere from $15,000-$20,000 on average – large and complex roofs may cost more. Replacing the frame entirely – common in roof re-modelling – means switching out the ridges, walls and rafters too so it’s a major project.
What is dual pitch roof?
A pitched roof is a roof of a building that has a slope or angle to it. Generally pitched roofs are dual pitched, meaning that they have two sides, but pitched roofs can also be mono-pitched, sloping in one direction only.
What is a peaked roof called?
GABLE ROOF Also known as pitched or peaked roof, gable roofs are some of the most popular roofs in the US. They are easily recognized by their triangular shape.
Should I replace flashing with new roof?
Your roof flashing needs to be checked annually. Remember, you won’t always have to replace your roof flashing when you get a roof replacement. No matter what kind of metal it’s made of, your flashing should outlive the original roof it was installed on.
Is step flashing better?
Step flashing offers far better protection from leaks, because even if a single piece of step flashing fails, the water just hits the next lower piece. That flashing directs the water onto the shingle and the water drains down the roof.
