Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.
Is it ok to overlap for roof paper.
Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface.
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.
Before you reshingle a roof read our step by step guide for adding new shingles over old ones.
High winds can push water or snow up the roof and under shingles or tiles.
Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.
The old roof is not so much being replaced as it is being covered over with a new roof.
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.
As you work the paper can be tacked down in the center so it won t blow away.
The best case scenario for an overlay is sound decking.
No previous or existing leaks.
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.
The roofing felt should be applied in layers that overlap.
This may not seem like the obvious way to replace a roof but many homeowners choose this method for some significant advantages.
Snap a chalk line the.
Feathers on birds fur on animals and shingles on a roof use this same method to stop water penetration.
When you overlay a new roof you attach the new shingles or other roofing material to the existing roofing material.
The installation of metal roofing involves placing large metal panels on the roof.
And a roof with no sidewalls where flashing is needed to tie in the roofing material to the exterior walls of.
As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.
The trick is to make sure you install it so it overlaps correctly.
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.
Align this layer with the bottom of the roof.
Roofing felt is required to overlap 2 inches over the lower felt course.
The overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.
