Construction service
Water Intrusion Investigation & Building Envelope Repairs
A water stain rarely identifies the true entry point. RESCO Construction investigates how water may be moving through exterior assemblies, documents visible conditions and develops a repair scope based on evidence rather than a quick surface patch.
Common signs and concerns
When this service may be useful
- Interior staining near windows, doors, ceilings or exterior walls
- Recurring dampness after wind-driven rain or snow melt
- Soft sheathing, swollen trim, peeling finishes or musty odours
- Failed sealant, missing end dams or poorly integrated flashing
- Water entering at roof-to-wall, deck, balcony or veneer transitions
- Previous repairs that concealed symptoms without correcting the path
Investigation before demolition
RESCO begins with the history of the leak: when it appears, the weather conditions that trigger it, earlier repairs and any interior or exterior changes. The visual review follows the assembly from likely collection points toward the visible symptom. Window and door perimeters, cladding joints, penetrations, roof-to-wall transitions, kick-out flashing, deck connections and grade relationships may all matter. The first visit is not a promise that every concealed condition can be identified without opening the assembly; it is a disciplined way to choose the next useful step.
A repair scope that follows the water-management layers
Exterior finishes shed most water, but the drainage plane, flashings and openings behind them are what manage water that gets through. A durable scope may require removing a controlled area of siding or veneer, replacing damaged sheathing or framing, restoring the weather-resistive barrier, integrating flashing and then reinstalling compatible finishes. RESCO documents known work, assumptions and exclusions so an owner can distinguish the investigation allowance from confirmed repair work.
Concealed damage and changing conditions
Water can travel sideways or downward before it becomes visible. Once finishes are removed, the affected area may be smaller or larger than expected. Rot, corrosion, mould-like growth, insect activity or structural deterioration may require a pause, documentation and a revised scope. RESCO uses the existing change-control process for material concealed conditions; no website description can predetermine the extent, environmental classification or structural significance of an assembly that has not been opened.
Repair, drying and closeout
The repair sequence depends on the materials and exposure. Wet components may need time to dry before enclosure. Damaged materials are replaced where included, continuity of the drainage plane is restored and finish transitions are rebuilt with attention to laps, clearances and drainage. Closeout can include photographs of concealed work and a written record of the completed scope. Performance is evaluated against the defined repair area, not represented as a guarantee against unrelated future leaks elsewhere in the building.
What helps RESCO prepare an effective first review
The most useful request includes the side of the building, the room where moisture appears, the weather direction and how long the condition has been occurring. Photos taken while the leak is active can show flow patterns that disappear after drying. Wide exterior photos provide context that close-up sealant photos cannot, while interior photos should show the opening, ceiling or wall around the stain. If roofing, siding, windows, doors, decks or eaves were changed before the symptom began, include that timing. Previous invoices or repair descriptions help RESCO understand what was attempted, but they are treated as history rather than proof of the source. During the review, access to the affected interior and the exterior elevation may be needed. Owners should not remove cladding or soak the wall before the visit unless a specific safe test has been agreed. A concise chronology allows the site time to focus on evidence, probable paths and the smallest useful next investigation instead of repeating unsuccessful assumptions.
RESCO process
From first review to documented closeout
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1
Describe the pattern
Share when the leak occurs, where water appears and any prior repair history. Photos taken during the event are especially useful.
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2
Review the exterior assembly
RESCO examines accessible transitions, penetrations, drainage details and interior symptoms without destructive work unless that is authorized.
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3
Plan targeted access
If opening is needed, the proposed access area, restoration assumptions and limits are documented before work proceeds.
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4
Confirm and repair
Observed conditions guide the final repair boundary. Material changes are documented rather than hidden inside an informal patch.
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5
Document the result
Where practical, photos and closeout notes record the restored layers before exterior or interior finishes cover them.
Questions before requesting a scope
Frequently asked questions
Can RESCO tell where a leak comes from in one visit?
Sometimes the path is visible, but many leaks are intermittent or concealed. RESCO will identify observations and likely paths, then recommend targeted access or further testing when a firm conclusion is not yet supportable.
Will siding or interior finishes need to be removed?
Not automatically. Removal is proposed only when accessible observations are not enough or when repair requires access to the drainage plane, flashing, sheathing or framing behind the finish.
What happens if rot is found?
Work is documented and the affected scope is reviewed before expanding. Structural or environmental conditions may require qualified third-party input before reconstruction continues.
Can RESCO repair a leak around a window or door?
Yes, when the issue falls within RESCO's construction scope. The repair may involve more than sealant if flashing, house wrap, substrate or adjacent cladding is not integrated correctly.
Does an investigation include a guarantee that no other leak exists?
No. The written scope addresses the evidence and repair area reviewed. Separate defects or concealed paths outside that area cannot be represented as corrected without investigation.
Start with the known conditions
Request a Water Intrusion Investigation
Share the project location, visible concerns and any useful photos. RESCO will review the request and confirm an appropriate next step.