Dormer
A structural element that projects from a sloped roof, typically containing a window. Adds usable space and light but creates complex flashing details.
A structural element that projects from a sloped roof, typically containing a window. Adds usable space and light but creates complex flashing details.
Why Dormers Matter for Insurance Claims
Dormers are among the most complex roof features to estimate accurately. Each dormer creates multiple wall-to-roof intersections that require step flashing, and the dormer roof itself needs its own shingles, underlayment, and drip edge. Storm damage to a dormer often involves both roofing and siding components, and adjusters who focus only on the main roof field may miss dormer-specific damage. Inspect the dormer cheek walls, flashing lines, and the dormer roof surface individually.
Dormer Components in Xactimate
A dormer estimate in Xactimate includes the dormer roof area (shingles, underlayment, drip edge), flashing at every wall-to-roof intersection (step flashing on both sides, counter flashing if masonry is present), dormer siding or trim on the cheek walls, and the dormer face including any window trim. Each component has its own line item and measurement. The complexity of dormers is a common reason estimates are underscoped, making supplements necessary.
Types of Dormers
The most common dormer types are gable dormers (with a peaked roof) and shed dormers (with a single sloped roof). Gable dormers have valley intersections where the dormer roof meets the main roof, requiring valley flashing. Shed dormers have simpler geometry but create a long wall-to-roof intersection. The dormer type affects which flashing details and line items are needed in the estimate, so identifying it correctly during inspection is essential.
Frequently asked questions
Dormers create multiple flashing intersections where the dormer walls meet the main roof. These intersections are common leak points after storm damage. A single dormer may require step flashing, counter flashing, valley flashing, and siding repair, all as separate line items.
Dormers add complexity to the roof sketch and increase the number of flashing line items. The dormer roof, walls, siding, and all flashing details must be measured separately. Dormers also increase the waste factor because shingles must be cut around the dormer perimeter.
If the dormer siding was damaged by the same covered peril that damaged the roof, it should be included in the claim scope. Dormer cheek walls (the sides of the dormer) are frequently damaged by wind-driven rain and hail.
No credit card required