Stop water at the wall, window and roof edge
Water does not only come through the roof. Corner moldings, window frames, doors, lights and trim inserts all leak when their seals fail. We find the path and close it.
Mobile service from New Bedford across South Coast MA, Plymouth County, the Upper Cape and nearby RI. $175 per hour · $3.50 per mile from New Bedford, one way ($50 minimum).
A stain at the bottom of a wall often has nothing to do with the roof. Corner molding screws, window frames, entry doors, marker lights and slide-out trim all rely on sealant that fails over time. Water runs down inside the wall and rots the framing from the bottom up.
We trace the exterior leak path, replace worn trim inserts, and reseal the joint properly. When the damage behind it needs carpentry, we tell you exactly what we found.
Interior staining can appear far from the actual entry point. The right repair starts by tracing the exterior failure, not by sealing the first stain you see.
RV sidewalls are a sandwich of fiberglass or aluminum skin, foam and a thin wood or composite frame. The skin is watertight; every joint in it is not. Corner moldings are screwed through the wall and rely on a vinyl trim insert and a bead of sealant over the screw heads. Windows and doors are set in butyl tape that dries out over the years. Marker lights, exterior outlets, compartment doors and slide-out trim are all sealed with product that ages on the same schedule as the roof. When those fail, water runs down inside the wall and rots the framing from the bottom up, and the first sign you see is a soft floor edge or a bubble in the fiberglass far from the entry point.
We trace the water path from the stain up to the entry point and inspect every joint on the way: corner moldings, screw rows, window and door perimeters, lights, outlets and slide trim. Shrunken or missing vinyl trim inserts are replaced by the length so the screw heads are covered again. Joints are cleaned, dried and resealed with non-sag sealant rated for the substrate; self-leveling roof sealant runs off a wall and household silicone is never used because nothing bonds to it later. Windows that leak at the frame are pulled and reset in new butyl tape when the frame seal has failed, then re-torqued and finished with a top bead, because a leaking window is almost always a butyl failure, not a glass problem. Every treated joint is photographed so you have a record of what was done.
Bubbling or waves in the fiberglass skin mean the bond between skin and the wood behind it has let go, almost always because water got in at a seal. Small, dry bubbles can sometimes be stabilized with injected adhesive and bracing; large or wet areas mean the wall structure needs rebuilding, which is a quote after inspection. Either way, stopping the leak comes first, and we tell you honestly which situation you have instead of selling you sealant over a wall that needs carpentry.
Manufacturers recommend inspecting exterior seals twice a year, and coastal New England makes that advice conservative: salt air, sun and freeze-thaw shorten the life of every bead and every strip of butyl. If your RV is more than five or six years old and the windows have never been resealed, it is time. A spring and fall seal check takes about an hour and prevents the wall repair nobody budgets for.
Exterior resealing is $175 per hour plus materials and travel. A full exterior reseal of moldings, windows and lights is typically a half to full day.
Full rates →Delamination means water has been in the wall for a while, but stopping the leak now prevents it from spreading. We seal the entry point and tell you honestly what the wall needs.
If the RV is more than five or six years old and the windows have never been resealed, yes. Window frame sealant is a very common leak source.
Yes. Shrunken or missing insert leaves the screw heads exposed to water. We replace the insert and reseal the molding.
Delamination means water has been in the wall for a while, but stopping the leak now prevents it from spreading. We seal the entry point and tell you honestly what the wall needs.
Condensation forms on the inside of the glass and dries by midday. A leak shows up as staining or soft material at the lower corners of the window frame, water tracks on the wall below it, or bubbling in the exterior skin under the window.
A bead over a shrunken trim insert and exposed screw heads is a temporary patch at best. The fix is a new insert and the right non-sag sealant over a clean joint, matched to the wall material.
Yes. Shrunken or missing insert leaves the screw heads exposed to water. We replace the insert and reseal the molding.
A full pass on moldings, windows, doors and lights is typically a half to a full day depending on RV length and how many windows it has.
Seams, vents, skylights, edges and penetrations
Aged sealant is the number-one cause of RV roof leaks. We reseal every seam, vent, skylight, edge and penetration with the right product for your roof, before water gets in.
RV Roof Resealing detailsLeaks, membrane puncture repairs, tree damage and failed roof edges
We come to your RV, find where the water is actually getting in, and fix the roof properly: membrane repairs, penetrations, transitions, edges and damaged decking.
RV Roof Repair detailsEvidence your adjuster can use
Storm, tree, water or collision damage? We inspect the RV, photograph and measure everything, and write the itemized estimate your insurance claim needs.
RV Damage Inspections & Estimates detailsWe provide RV exterior seals & molding repair throughout our service area, including:
Ready when you are
Call or text with the year, make, model and where the RV sits. Send photos if you have them. You'll talk to the technician, not a call center.