What is roof sheathing? Know when to replace it

A roofing system has a complex design that comprises different parts. Roof sheathing or decking placed under the tiles or shingles play a vital role in your roofing system. It creates a solid surface that allows you to attach roofing materials.

Understand the importance of roof sheathing

Roof decking or sheathing serves multiple roles and adds structural strength. It reinforces your roofing system while allowing an even weight distribution. The sheathing prevents the risk of sagging under heavy loads. It also ensures a secure and stable foundation for your roof coverings. The best roofers choose quality sheathing for proper insulation and a barrier against water infiltration.

Various types of roof decking

Roof sheathing can be categorized in different ways-

Sheet sheathing refers to wide sheets of wood, made from OSB and plywood. Oriented Strand Board is a more popular type used for sheathing and creates a flat sheet. However, plank sheathing is a traditional choice for most roofing structures. It comprises rectangular and elongated wooden boards available in various sizes.

Some roofers also use a waferboard that includes thin, large chips of wood with resin. It is a more affordable and durable choice for your roof.

You can consult a roofing contractor in San Mateo to identify the best type of sheathing for your roof.

When should you replace roof sheathing?

A few signs indicate the need for roof sheathing replacement.

Sagging problems

Sagging signs mean a failure in the roof sheathing’s functional value. Continuous moisture exposure can cause weakness in sheathing.

Rotten wood

The wooden parts may rot over time due to moisture infiltration. If you have found spongy areas on your roof, it is a sign of damage.

Water stains

Stains on your ceiling or walls may be due to leaks. Water leaks often indicate a breach in the sheathing layer.

Conclusion

As you have understood the significance of roof sheathing, choose the right one for your roofing structure. If the existing sheathing shows signs of issues, replace it on time.

Professional roofers will assess your roof condition and secure your roofing material with the best sheathing.