Glass, Rooflight and Impact Damage on Motorhomes and Caravans

A motorhome carries at least three different glazing systems: a laminated base-vehicle windscreen, acrylic double-glazed habitation windows, and acrylic rooflights. Only the first behaves like car glass. The other two are body components, are frequently not held in stock, and are replaced rather than repaired.

Four materials, four claim routes

Base-vehicle windscreen

Laminated glass on a Ducato, Sprinter, Crafter, Transit or Daily. Behaves exactly as car glass does: chips within limits are repairable, cracks beyond them mean replacement. Glass cover under partial cover normally responds. On motorhomes the complication is access and size — a coachbuilt body over the cab restricts the working space and pushes labour above the car equivalent.

Habitation windows

Acrylic, usually double-glazed with an air gap, framed and hinged. They do not chip; they craze, crack and delaminate. They are not repaired. Replacement means the correct part from the body manufacturer, and on older or lower-volume builds that part may no longer exist, at which point the answer is adaptation of a different unit — a body job, not a glazing job.

Rooflights and skylights

Acrylic domes in standard aperture sizes. Old domes go brittle and yellow, and fail at a hail size a new one shrugs off. Replacement usually straightforward where the aperture is a common size, awkward where it is not. A cracked dome is a water ingress route, so it should not be left.

Mirrors, lamps and cameras

Base-vehicle parts, replaced conventionally. Long-arm motorhome mirrors are expensive and easily damaged in tight sites.

Impact damage specific to these vehicles

Low bridges and overhangs

Height is the defining hazard of a motorhome. A strike on a bridge, a barrier, a tree limb or a fuel station canopy damages the roof leading edge, the front cap, roof-mounted equipment and the roof-to-wall joint in one movement. This is an own-fault loss, which places it under fully comprehensive only, and the assessment must look well beyond the visible impact: joint integrity, frame deflection, and whether the roof will still shed water at speed.

Kerbs, bollards and overhang swing

A long rear overhang swings wide when turning. Contact with a bollard or a tree at the rear corner damages the corner mould, the rear panel and often the bike carrier mounting behind it. Cheap to cause, disproportionately expensive to repair on a bonded body.

Underside

Low ground clearance over a raised pitch entrance or a ferry ramp damages step, underfloor tanks, waste pipework and heating ducts. Almost none of it is visible without lifting the vehicle, which is why it is the most under-reported impact damage of all.

Cover

Glass breakage sits under partial cover, and therefore under fully comprehensive too. Own-fault impact — bridge strike, kerb, manoeuvring — is fully comprehensive only. A vehicle carrying partial cover alone is covered for the stone chip and not for the bridge.

Practical points

• Do not let a general glazing service quote for habitation windows. They are body parts and pricing them as glass understates the job.
• Photograph the aperture and the frame, not only the broken pane. Availability of the correct part turns on the exact aperture size.
• After any roof strike, have the roof-to-wall joint and the rooflight seatings examined before a long drive. Water damage that follows a deferred inspection is usually attributed to age rather than to the impact.
• Keep the broken parts.

Where we inspect for this type of damage

Frequently asked questions

Is a cracked habitation window the same claim as a windscreen?

No. The windscreen is base-vehicle laminated glass and is handled as glass. Habitation windows are acrylic body components, are not repaired, and depend on parts availability from the body manufacturer.

My rooflight cracked in hail. Is age relevant?

It is relevant to the assessment because acrylic embrittles with UV exposure, but it does not by itself defeat the claim. It belongs in the report honestly.

I hit a low bridge. Is that covered?

It is an own-fault loss and therefore fully comprehensive only. Partial cover does not respond to it.

What if the correct window is no longer made?

The repair becomes adaptation of an available unit to the existing aperture, which is body work rather than glazing and needs to be costed as such.

More damage-type guides

• Hail Damage to Motorhomes and Caravans: Complete Assessment Guide
• Storm, Gale and Fallen-Tree Damage at European Campsites
• Flood and Inundation Damage to Motorhomes and Caravans
• Theft and Break-In at a Campsite Abroad: Documenting the Claim
• Awning, Carrier and Accessory Damage: Where the Cover Limits Bite
• Is Your Motorhome Still Roadworthy? Post-Damage Safety Assessment
• Marten Bite, Rodent and Wildlife Damage
• Total Loss: Repair Cost, Replacement Value and Residual Value
• Water Ingress and Delamination: What Comprehensive Cover Does Not Pay
• Fire, Gas-System and Lightning Damage
• Manoeuvring and Pitch Damage: The Most Common Own-Fault Claim
• Vandalism Damage: Why It Sits Under Fully Comprehensive Only

This page describes the standard pattern of the German motor insurance market and is general information, not advice on your individual contract. Cover always follows your own policy conditions. MOTOEXPERT is a network of certified automotive appraisers (Kfz-Sachverständige). We produce independent technical reports. We do not provide legal representation. Named places and makes are descriptive references only; no commercial connection with their proprietors is stated or implied. All trademarks belong to their respective owners.