The Right Way to Fix a Rotten Roof Board

roof sheathing | roof repair | long island

The roof of your home may look good from the street view, but there could be serious damage underneath the shingles. Thanks to damaged flashing or a broken shingle, water can find its way into the roof causing water damage and rot. The sheathing underneath your roof’s shingles will need to be replaced before sagging, mold, and more water damage occurs.

Removal
If there is a roof leak on only one area of your roof, you can get by with just removing and replacing that one sheathing board. Be sure to remove the entire board that has been affected, don’t just cut out the rotted piece. After removal, purchase a similar piece of sheathing that is the exact same material with the same exact thickness.

Fitting
Don’t measure the rotted board for measurements of the new sheathing. Instead, measure the area of the roof where the board will go, but make sure to subtract 1/16 of an inch for a better fit. If you can, have your local lumber supplier cut the board for you. Otherwise, measure twice, cut once, and see if your new piece of sheathing fits like a glove.

Placement
Place the new board in the open space and secure it with 1 ½ inch galvanized roofing nails or screws. Place these nails or screws in each corner and in the middle of each side. Afterward, cover the sheathing with roofing felt and begin re-shingling the roof. Inspect the condition of the old shingles to see if you can reuse them, or replace them with new shingles.

A rotted roof board is a telltale sign of a roof leak and should be replaced immediately before your roof becomes further damaged. When you need an expert installer to repair your roof, contact Preferred Exterior. To learn more, or to schedule a free estimate, give us a call at (516) 354-7252.

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