Roofing & Materials
Thermal Shock
Rapid temperature swings that make a roof surface expand and contract faster than the material can take, cracking it over time. It is wear rather than one weather event, so carriers often treat it as excluded deterioration. Documenting a single storm as the cause is different from documenting years of movement.
More roofing & materials terms
- Synthetic underlayment
A modern woven underlayment that is lighter, stronger, and more tear-resistant than traditional felt.
- Tear-off
Removing the existing roof covering before the new roof goes on, bagged and hauled off as part of the roofing job.
- Tile roof
A roofing system of clay or concrete tiles. Tiles are heavy, expensive to replace, and break under impact, so hail damage to tile is a distinct scope from asphalt.
- TPO
A single-ply thermoplastic membrane (thermoplastic polyolefin), usually white, heat-welded at the seams and used mostly on low-slope commercial roofs. On a claim, photograph the seams, fasteners and any ponding or punctures, because whether a section is repaired or replaced depends on membrane type, age and the carrier's matching rules.
- Turbine Vent
A turbine vent is a spinning rooftop vent that pulls hot air out of an attic as wind turns its blades. On a storm claim, note bent or missing turbines and whether the flashing leaked, because a vent that still spins may be repairable while a crushed one is usually replaced.
- Underlayment
The protective layer between the roof deck and the shingles, felt or synthetic.
Common questions
What does "Thermal Shock" mean in Xactimate estimating?
Rapid temperature swings that make a roof surface expand and contract faster than the material can take, cracking it over time. It is wear rather than one weather event, so carriers often treat it as excluded deterioration. Documenting a single storm as the cause is different from documenting years of movement.
Where does "Thermal Shock" show up in a claim?
The term matters on estimates and scopes across the insurance restoration workflow. Browse the glossary for related terms.
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