Is It Ok To Overlap For Roof Paper

Therefore a 2 inch overlap provides redundancy at the edges where the barrier is weakest.

Is it ok to overlap for roof paper.

No previous or existing leaks. 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. Roofing felt is required to overlap 2 inches over the lower felt course. Align this layer with the bottom of the roof.

The roofing felt should be applied in layers that overlap. A steep roof is 4 12 or greater meaning that the roof rises four feet for every 12 feet of length. The old roof is not so much being replaced as it is being covered over with a new roof. 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.

When you overlay a new roof you attach the new shingles or other roofing material to the existing roofing material. You want each piece to overlap the piece below it. 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 overlapping felt creates a secondary barrier for moisture and wicks water away from the shingles above and the sheathing below.

Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. As you work the paper can be tacked down in the center so it won t blow away. The trick is to make sure you install it so it overlaps correctly. Snap a chalk line the.

This may not seem like the obvious way to replace a roof but many homeowners choose this method for some significant advantages. 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. As a first line of defense against water damage it is important that the metal roof overlap be implemented correctly.

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. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros. The best case scenario for an overlay is sound decking.