To shingle on top of existing shingles there are a few things you want to make sure.
Roof move roof ridge.
In traditional house framing also called stick framing a basic roof frame consists of opposing pairs of sloping rafters that meet at their top ends at a ridge board or ridge beam.
For this we have to change the height of the right eave using offset from roof base at a negative value.
Use 1 5 or 1 75 inch roofing nails.
We want to move the ridge by 1 50 meters to left.
For pricing and availability.
Ridge vents openings that run the entire length of your roof along the ridge are often visible only to a trained eye.
Example 1 a roof by footprint with equal slopes of 30 degrees.
Your second row of shingles should be cut to 10 inches wide.
Brace these supports in the centerline of the building.
Butt these against the bottom of the old roof s third row and nail into place.
2 snap a chalk line on either.
In this next in a series of diy videos from the roofer chick ami feller learn how to damaged ridge cap on a residential roof.
Position a ridge board down in the saddles of the supports.
Shingle a roof over existing shingles save 75 give or take.
1st and foremost your existing roof needs to be in reasonable shape.
Remove all the shingle caps from the roof ridge from one side of the roof to the other by prying them up with a pry bar and pulling out the nails with a claw hammer.
Rip the ridge board to the correct width to meet the rafter widths at the ridge.
Create a saddle at the top with the braces the height of the building walls plus rise less the width of the ridge board.
Metal sales universal ridge 14 in x 126 in steel roof panel ridge caps.
The top end of each rafter is cut at an angle so that it meets flush with one broadside of the ridge board and the ridge is sandwiched between the rafters.
We used the formula.