Ask This Old House general contractor Tom Silva helps diagnose a problem with composite decking coming loose.

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Tom explains to Kevin the proper size screw to use when installing composite decking.

Time: 2 hours
Cost: $20
Skill Level: Beginner

Shopping List:
Long composite deck screws

Steps:
1. When fastening deck boards to structure, remember that the structure will dry out and shrink in time. Because of this, Tom recommends using screws that are 2.5x longer than the material being fastened.
2. If deck boards are popping for this reason, replacing shorter screws with longer screws should solve the problem.

Resources:
Various size deck screws can be found at the local home center or local lumberyard.

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

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How to Repair Rising Deck Boards | Ask This Old House
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