Table of Contents
Ideally the sheathing should be on top of the fascia without extending beyond it. Guesswork can create a situation in which it extends too far and it interferes with flashing installation, or you have to cut it. If the fascia is to be one layer of 1x, I overhang the sheathing 5/8.
Does roof sheathing overlap fascia?
In view A, the sheathing is started flush with the tail cut of the rafters. Notice that when the fascia is placed, the top edge of the fascia is even with the top of the sheathing. In view B, the sheathing overlaps the tail end of the rafter by the thickness of the fascia material.
How far should the roof overhang?
There is no true standard size for overhangs, but typical overhangs that are used for protection from rainfall are 16-18 inches wide. Overhangs wanted for shading should be minimally 24 inches.
Do you need to space roof sheathing?
The recommended maximum gap between roof sheathing boards for low-quality, 3-tab shingles is 1/4-inch. The correction recommended by manufacturers is installation of an additional layer of 3/8-inch minimum exterior-grade plywood or OSB roof sheathing on top of the original wood-board roof sheathing.
What goes on first roof or fascia?
Fascia and soffit are installed after the roof installation is finished. It is ideal that soffit and fascia materials be installed before you place tiles or any other type of roofing material on the roof.
How far should shingles extend over drip edge?
Shingles should not extend more than 3/4” (19 mm) past the drip edge. If shingles overhang the edge of the roof by more than 3/4” (19 mm), then they are not supported and may crack and break off. In addition, the wind resistance at the roof edge may be compromised.
How much overhang should a porch roof have?
Typically, a porch overhang should be at least 12-inches long. However, they can range from two feet to very minimal in length depending on the area’s climate, so be sure to account for the amount of rainfall you might expect. Drier climates require minimal overhang length and wetter climates require longer overhangs.
How far can a 2×6 Rafter overhang?
A 2×6 spaced 16 inches apart can span a maximum distance of 13 feet 5 inches when used as a rafter, 10 feet 9 inches when used as a joist, and 6 feet 11 inches when used as a deck beam to support joists with a 6-foot span.
Is 7/16 OSB OK for roofing?
Standard types of wood designed for roof sheathing are oriented strand board, known as OSB, and plywood, the most popular being OSB. Sheets of 7/16-inch thick, without edge support, can be used in an area where the snow load is 30 pounds per square foot.
Should plywood sheathing have gaps?
APA recommends a 1/8-inch space between panel edge and end joints. Plywood and oriented strand board (OSB), like all wood products, will expand or shrink slightly with changes in moisture content. If the wood structural panels are tightly butted, there is no room for expansion and buckling can occur.
How thick should roof OSB be?
Standard roof sheathing thickness is ½” to ⅝” thick. If you are using OSB for your roof deck, then ⅝” is the recommended thickness. For plywood, which is slightly stronger than strand board, ½” thick is appropriate. Another factor is how far apart your trusses or rafters are spaced.
Does roof sheathing need to be staggered?
Staggering panels by at least two supports is recommended. During the installation of OSB, the rough surface side should be facing up. This rough side is a screened or skid-resistant coated side. The panels should be spaced 1/8-inch apart at the ends and edges.
How thick should roofing plywood be?
Most roofs will be sheathed in plywood at least 3/8 inch thick. That will suffice on a roof with rafters set 16 inches apart with minimal roof loads. Loads will vary with the pitch of the roof; the flatter the roof, the greater the load on any one section. Steeper roofs will have lighter loads per square foot.
Do you put drip edge on gable ends?
Install roof drip edge along the eaves, add underlayment, then place drip edge along the gable end. The best way is to install the roof drip edge only along the eaves first, then place ice-and-water barrier (in the snowbelt) or felt paper (underlayment) over the drip edge.
What is the trim under the roof called?
Soffit: The underside of the eaves, or roof overhang, which can be enclosed or exposed.
How is fascia attached?
The fascia board is nailed to the rafter feet and usually has a rebate or lip for the soffit boards to slot into. They are then either fixed to a batten that is attached to the brickwork, or sat on top of the last course of brickwork.
Should fascia be installed before shingles?
If your roofers are replacing your fascia board as part of a full roof replacement, then they will install the new shingles before they address the fascia. There is no way to replace the fascia board without removing the gutters, as the gutters are mounted to the board.
How much should a starter overhang for shingles?
Whether installed at the eave or the rake, the starter shingles should overhang the edge of the roof by ¼ inch to ¾ inch. Typically, the finish shingles are then installed to align with the edge of the starters.
How far should shingles overhang the rake?
The edge of the shingles should hang over a roof between an inch and an inch and a half — or between a half inch and three-quarters of an inch if drip edge flashing is installed. Too much overhang and the shingles could blow off in high winds; too little can allow water to seep into rake or fascia boards.
Should shingles overhang gutters?
Most shingle manufacturers recommend a 1/4 to 3/8 inch overhang over your eave, which is where your roof ends by your gutter. In many cases, and particularly as the home ages and settles, the roof edge at the eave edge can wave in and out by more than this amount.
