A roof overhang protects the building under it from weather and rain, and if your home does not have one, revealing an overhang isn’t an especially tough construction job. Framing a new overhang is simple, but blending the new overhang seamlessly to the present roof requires some effort and expense.
Preparing the Roof
To access the present rafter tails, remove the fascia board which caps the ends of the rafters, as well as any other end pieces which cover the rafter tails along with the upper plate of the outside wall. If, after you’ve removed the fascia, then there’s not enough space to work within the attic to extend the rafters, you can eliminate the roof sheathing and shingles in the lower portion of the rafters to expose the rafters and give yourself space to work.
Cut rafter tail extensions twice the amount of the overhang that you want to add, using lumber the same size as the present rafters. Rank the rafter extensions contrary to the present rafters to ensure that two-thirds of the span overlaps the rafters along with the rest of the handful goes outward to set the overhang. The overhang should be two feet or less to ensure that it will be stable and well supported. Nail the extensions to the existing rafters utilizing 16-penny nails spaced 6 to 8 inches apart.
Adding Fascia and Soffits
Attach a brand new two-by-four sub-fascia board together the ends of the brand new rafter tails. If you’d like to build enclosed eaves, you can put in a horizontal soffit that spans the base of the overhang between the fascia and the outside wall of the building, surrounding the space below the overhang. To create a soffit, attach a two-by-four nailer board to the wall of the building, making it flat with the base of the fascia. Attach two-by-fours, one for each rafter tail, vertical to the fascia, nailing one end to the rafter tail and another end to the nailer. Finish the soffit by nailing soffit material to the framing and adding a one-by-six fascia board over the sub-fascia.
Roofing the Overhang
Following the overhang is framed, cover the rafter extensions, and any part of the roof where you’ve removed sheathing, with new plywood sheathing that’s within 1/8 inch of the depth of the present sheathing. The best approach to incorporate the new overhang in the present roofing is to tear off the shingles and underlayment in the whole roof and put a new roof on the whole building. But if time or your budget does not permit a new roof, then you are going to need to coincide with the old shingles as best you can with new shingles and utilize them to cover the overhang. Begin by installing a metal drip edge along the lower edge of the overhang, then laying a class of shingles along the border. Work up with following classes until you get to the present roof, slipping the last row of shingles that are new under the poles of the present shingles.