Roof Decking Rotting

If your roof decking gets wet it can develop wood rot and impact the performance of your whole roof.

Roof decking rotting.

Rotted roof decking cannot be repaired it must be replaced. This is the leading cause of roof decking rot water pooling and eating away at materials and decking wood. Roof decking or sheathing refers to the thin boards of wood that span the trusses and support the rest of the roof. Not only are some of the treated wood decking boards rotting but i m also noticing that the tops of some of the joists are.

Roof decking sits beneath the shingles used to protect the house from the weather. Whether you are replacing your entire roof or repairing a small area fixing rotten sections of roof decking or sheathing is vital to creating a sound watertight structure. It s what connects the roof of your home to the rest of the house. Since roof decking is made from wood and wood composites it is particularly susceptible to rotting and water damage when continuously exposed to sustained or excess moisture.

Measure the area where your new board will go. Roof decking is usually made from plywood though your roof decking may also be made from a composite form of that material. Roof decking which is nailed to the roof s trusses holds roofing materials including felt paper and shingles and also serves to stiffen your home s structure and protect it from wind. Once all nails and screws are removed lift the rotted decking board up and off the roof.

Roof decking is the actual foundation of your roofing system. Use caution for this step. What causes roof decking to rot. Outdoor decks can provide years of service as the go to spot for entertaining barbecuing or just relaxing on a sunny day.

Water seeps into your roofing system in many different ways. Prime spots in the attic for wood rot are on the underside of the roof decking in the joints where the wood members connect at the peak of the roof and at the edges of the attic where the. But wood decks are not expected to last forever. It supports the weight of roofing shingles and lays on top of your attic s rafters.

Molds and bacteria then become prolific and they produce acidic chemicals that cause a spiraling effect that results in your decking decomposing at a logarithmically increasing rate. Lashed by rain and wind and further weakened by sun exposure wood decks can collapse due to rot and other structural imperfections injuring close to 34 000 people annually.