A steep roof is 4 12 or greater meaning that the roof rises four feet for every 12 feet of length.
Is it ok to overlap for roof paper.
Roofing felt is most often used as an underlayment or layer between the roof deck and shingles tiles or metal panels on roofs with steep slopes.
Also called roof felt or builder s felt overlapped tar paper creates a water barrier that is your home s last line of defense against the elements if your shingles are damaged by wind hail or age.
You want each piece to overlap the piece below it.
Start at the bottom of the roofline and work up so any water that gets through the roofing material will shed down the tar paper and will not go under it.
Feathers on birds fur on animals and shingles on a roof use this same method to stop water penetration.
The old roof is not so much being replaced as it is being covered over with a new roof.
As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.
As you work the paper can be tacked down in the center so it won t blow away.
The roofing felt should be applied in layers that overlap.
No previous or existing leaks.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
Overlay a second layer of felt 2 to 3 inches and fasten it through the overlay so it secures the top of the felt underneath.
When you overlay a new roof you attach the new shingles or other roofing material to the existing roofing material.
The panels overlap allowing water to flow from one panel to the next without being able to penetrate the area under the roofing panel.
The trick is to make sure you install it so it overlaps correctly.
Align this layer with the bottom of the roof.
High winds can push water or snow up the roof and under shingles or tiles.
And a roof with no sidewalls where flashing is needed to tie in the roofing material to the exterior walls of.
Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
Snap a chalk line the.
The best case scenario for an overlay is sound decking.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
The installation of metal roofing involves placing large metal panels on the roof.
Roofing felt is required to overlap 2 inches over the lower felt course.
