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Signs Of Roof Decking Damage

2 May 2023 by Leslie Turner

Roof decking, which forms part of the roof framing, provides the groundwork upon which roofers install other roof materials. For example, the shingles go above the decking. Thus, decking damage or defect affects other roof parts. For example, depressed decking sections increase shingle damage risk.

Below are some telltale signs of damaged roof decking.

Water Leakage

Water leakage is both a cause and a symptom of decking damage. On the one hand, water leakage causes damage by rotting it and encouraging pest infestation, and pests damage decking. On the other hand, water leakage is a sign of decking damage since rotten decking might develop holes or weak spots that allow exterior water to penetrate the roof.

You don't have to see water to know if your roof leaks. Watch out for signs of water exposure or damage, such as stains, discolorations, and growths (such as mold or mildew).

Roof Sagging

Water exposure rots and weakens the decking structure. Rotten decking might not support the overlying weight, causing it to sage and lose shape. Therefore, you should suspect a compromised decking if it sags. You have a sagging roof if you can spot a dip on a flat roof part or a bow or waviness on the roof plane.

Heating and Cooling Inefficiency

The external house structure, which includes the roof, affects the house's heating and cooling efficiency. For example, the roof material determines heat exchange between your house's exterior and interior environments. You should suspect a damaged roof if other house parts are intact and your HVAC (heating, ventilation, and air conditioning) system runs efficiently.

Decking damage increases its conductivity and increases heat transfer through the roof. During the cold season, compromised decking will allow heated air to escape the house. In such a case, your house might not be as comfortable as it should be. You might also experience hold and warm spots in the house.

Energy Inefficiency

The HVAC inefficiency that a damaged roof triggers also leads to energy inefficiency. Energy inefficiency arises because the HVAC will overwork and run lengthy cycles if your house loses heated or conditioned air. Thus, you should suspect a compromised roof if you have ruled out other possible causes of energy inefficiency — especially if your HVAC constantly runs.

Contact a home roofing repair roofing contractor as soon as possible if you suspect decking damage. The contractor will diagnose the damage and apply the relevant remedy. Otherwise, the damage might worsen and even necessitate roof replacement.

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