Latest / Boondocking Tips: Off-Grid Camping, RV Travel & Van Life / Drying Wet RV Roofs and Walls: Structural Drying Principles Adapted for Mobile Units
Transcript
- 0:00SPEAKER_00: Drying wet RV roofs and walls.
- 0:03SPEAKER_00: Structural drying principles adapted for mobile units.
- 0:07SPEAKER_00: An RV is not simply a small house.
- 0:10SPEAKER_00: Many campers use bonded sandwich panels, an exterior fiberglass or composite skin, plywood or luon, foam insulation, aluminum or wood framing, interior wallboard, and adhesive layers.
- 0:24SPEAKER_00: Forest River, for example, describes laminated RV assemblies containing fiberglass, luon, block foam, aluminum framing, and interior panels.
- 0:34SPEAKER_00: Henkel's RV construction guide shows a similar layered wall system using decorative interior panels, luon, foam, framing, and exterior FRP.
- 0:45SPEAKER_00: Forest River construction brochure, Henkel RV Applications Guide.
- 0:50SPEAKER_00: That construction creates two special problems.
- 0:53SPEAKER_00: Water can travel laterally inside a roof, wall, or floor panel, far beyond the visible stain.
- 0:59SPEAKER_00: The assembly may have little natural ventilation, so drying the surface does not necessarily dry the luon, foam, adhesive line, or framing behind it.
- 1:09SPEAKER_00: The principles of the ANSI IICRC S500 standard remain useful, but they must be adapted to the RV's small volume, limited electrical service, narrow aisles, fragile finishes, and bonded construction.
- 1:23SPEAKER_00: For U.S.
- 1:24SPEAKER_00: work, this article references ANSI IICRC S500-2021, 5th edition, the edition listed by ANSI for professional water damage restoration.
- 1:36SPEAKER_00: ANSI IICRC S500 2021, IICRC Standards Overview.
- 1:42SPEAKER_00: Important, this is a technical adaptation, not a replacement for the purchased S500 Standard, IICRC training, RV manufacturer instructions, electrical codes, or evaluation by a qualified RV technician, engineer, electrician, or mold remediation professional.
- 2:00SPEAKER_00: The RV version of the S500 drying sequence, a practical RV drying project, follows this order.
- 2:06SPEAKER_00: Make the site safe and stop the water source.
- 2:09SPEAKER_00: Inspect, classify and map the damage.
- 2:12SPEAKER_00: Remove bulk water by extraction.
- 2:14SPEAKER_00: Open concealed wet assemblies through controlled demolition.
- 2:18SPEAKER_00: Create directed air movement.
- 2:20SPEAKER_00: Control vapor with dehumidification, ventilation, or both.
- 2:24SPEAKER_00: Use gentle controlled heat when appropriate.
- 2:27SPEAKER_00: Monitor material and atmospheric conditions every day.
- 2:30SPEAKER_00: Verify drying before closing the assembly.
- 2:33SPEAKER_00: The S500 framework treats drying as a coordinated process.
- 2:37SPEAKER_00: Remove liquid water, promote evaporation, control humidity, and manage temperature.
- 2:43SPEAKER_00: Air movement by itself is not drying.
- 2:46SPEAKER_00: It merely transfers moisture from materials into the air.
- 2:49SPEAKER_00: The water must then be removed from that air.
- 2:52SPEAKER_00: ANSI, IICRC S500, Public Reference Text, Restoration Basics, Balanced Drying.
- 3:00SPEAKER_00: Why RV roofs and walls dry differently?
- 3:04SPEAKER_00: Bonded sandwich panels.
- 3:05SPEAKER_00: A typical laminated RV wall may contain fiberglass, phylon, aluminum, or another exterior skin.
- 3:13SPEAKER_00: Luan, plywood, or a composite backing layer.
- 3:16SPEAKER_00: Aluminum or wood framing, EPS, XPS, polyisocyanurate, or another foam core.
- 3:23SPEAKER_00: Adhesive layers, decorative interior wallboard or paneling.
- 3:27SPEAKER_00: Some roof assemblies use a membrane such as EPDM or TPO over plywood or luan.
- 3:33SPEAKER_00: Others use fiberglass or a composite roof surface.
- 3:36SPEAKER_00: The membrane itself may not hold much water, but the substrate below it can remain wet for a long time.
- 3:43SPEAKER_00: Alpha Systems RV roofing information, Forest River Construction Brochure, Small Volume, Large Moisture Load.
- 3:51SPEAKER_00: An RV may contain only a fraction of the air volume of a house, so a wet wall or roof can quickly raise interior relative humidity.
- 3:59SPEAKER_00: At the same time, there may be no floor drain, limited ventilation, and nowhere convenient to place equipment.
- 4:06SPEAKER_00: This means an RV often needs less total equipment, more precise equipment placement, more aggressive moisture monitoring, greater reliance on opening the assembly, more careful power planning.
- 4:17SPEAKER_00: Finishes are easily damaged.
- 4:20SPEAKER_00: Interior RV wallboard, vinyl wallpaper, ceiling liners, foam-backed fabrics, cabinetry, flooring, and adhesive bonded laminates can be damaged by excessive heat or uncontrolled air pressure.
- 4:32SPEAKER_00: Heat may dry the visible surface while leaving the core wet.
- 4:36SPEAKER_00: An excessive temperature can affect adhesives, sealants, plastics, or foam.
- 4:41SPEAKER_00: Initial inspection and moisture mapping.
- 4:43SPEAKER_00: Make the unit safe.
- 4:45SPEAKER_00: Before operating equipment, disconnect shore power if electrical components are wet.
- 4:50SPEAKER_00: Turn off the generator and inverter.
- 4:52SPEAKER_00: Disconnect or isolate batteries when appropriate.
- 4:55SPEAKER_00: Shut off propane before opening areas near gas lines or appliances.
- 4:59SPEAKER_00: Identify 120 volt wiring, 12 volt wiring, plumbing, slide mechanisms, and roof penetrations.
- 5:06SPEAKER_00: Do not operate electrical equipment in standing water.
- 5:10SPEAKER_00: Use GFCI protection and grounded, hard service cords.
- 5:14SPEAKER_00: Inspect every cord, plug, and equipment housing before use.
- 5:18SPEAKER_00: OSHA warns that wet cord connectors can allow current to travel through a person who provides a path to ground.
- 5:24SPEAKER_00: The agency recommends properly grounded equipment, hard or extra hard use cords, and GFCI protection in applicable wet or construction environments.
- 5:34SPEAKER_00: OSHA Electrical Safety Guidance.
- 5:39SPEAKER_00: Find and control the source.
- 5:41SPEAKER_00: Common RV entry points include roof seams and penetrations, air conditioning gaskets, skylights and vents, marker lights, windows and window flanges, slide-out corners and seals, exterior trim, plumbing penetrations, water heaters and holding tank connections, refrigerator and furnace compartments.
- 6:03SPEAKER_00: Drying should not begin as if the leak has been solved, merely because the visible drip has stopped.
- 6:09SPEAKER_00: The source should be repaired or controlled, then tested.
- 6:12SPEAKER_00: In many cases, the roof or window repair must be completed by an RV technician before the structural drying can be considered successful.
- 6:21SPEAKER_00: Establish a dry standard.
- 6:24SPEAKER_00: A most defensible drying target is based on unaffected material in the same RV, not on a generic number.
- 6:31SPEAKER_00: Take baseline readings from the same wall assembly in an unaffected room.
- 6:36SPEAKER_00: The same roof or ceiling material away from the leak.
- 6:39SPEAKER_00: Similar framing members, similar luon, plywood or composite panels, similar flooring and cabinet substrates.
- 6:47SPEAKER_00: Record, meter manufacturer and model, pin or pinless mode, wood species setting if applicable.
- 6:54SPEAKER_00: Material type, temperature, reading location and depth, whether the value is actual moisture content, WME, or a relative scale.
- 7:03SPEAKER_00: Moisture meters calibrated for wood do not produce a true moisture percentage in every RV material.
- 7:09SPEAKER_00: On non-wood materials, many meters provide a relative or wood moisture equivalent reading, which must be compared with a dry reference of the same material.
- 7:18SPEAKER_00: Protometer application notes, Delmhorst moisture meter guidance, map the moisture.
- 7:24SPEAKER_00: Use a simple coordinate system, such as R1 to R5, roof zones, W1 to W8, Wall Zones, C1 to C4, Ceiling Zones, F1 to F6, Floor Zones, P, Plumbing or Penetration, Slide Out Mark readings on a sketch or photograph.
- 7:43SPEAKER_00: A useful grid is 12 to 24 inches between test points, tightened around, stains, soft spots, windows, corners, roof to wall transitions, cabinet bases, floor-to-wall joints, fasteners and trim, delamination or bubbling, areas below the suspected entry point.
- 8:01SPEAKER_00: Take readings on both sides of a suspected wet area.
- 8:05SPEAKER_00: Water in a laminated panel can migrate sideways, downward, or toward a low corner rather than remaining directly below the leak.
- 8:13SPEAKER_00: Extraction.
- 8:14SPEAKER_00: Remove liquid water first.
- 8:16SPEAKER_00: Extraction is the first mechanical drying step.
- 8:19SPEAKER_00: Air movers and dehumidifiers are inefficient when liquid water remains in carpet, pad, cabinetry, roof decking, or wall cavities.
- 8:28SPEAKER_00: Where to extract?
- 8:29SPEAKER_00: Extract from carpet and carpet pad, upholstery and cushions, wet flooring, cabinet bottoms, accessible roof decking, wall cavities after controlled access, low points beneath windows and slide-outs, drain pans and plumbing compartments.
- 8:44SPEAKER_00: Use the least destructive method that can remove the water thoroughly.
- 8:48SPEAKER_00: A portable wet vacuum may be adequate for a small category one leak.
- 8:53SPEAKER_00: A professional portable extractor may be needed for saturated carpet, pad, or large volumes of water.
- 9:00SPEAKER_00: A representative low-amp rover HVE extractor draws approximately 3 amps, but weighs about 67 pounds and has a large operating footprint.
- 9:11SPEAKER_00: A larger portable flood pumper may draw roughly 12 to 13.5 amps.
- 9:17SPEAKER_00: This illustrates why extraction equipment is often best located outside the RV with only the hose and tool brought inside.
- 9:25SPEAKER_00: Rover HVE extractor specifications, HVE3000 Flood Pumper, Dry Ease Restoration Equipment Catalog.
- 9:33SPEAKER_00: Extraction Cautions.
- 9:35SPEAKER_00: Do not use compressed air to blow water deeper into a wall or roof.
- 9:39SPEAKER_00: Do not force water into electrical, appliance, or propane compartments.
- 9:43SPEAKER_00: Do not flood the gray or black tank with extracted water unless the system is designed and approved for that use.
- 9:50SPEAKER_00: Route discharge hoses so they cannot spill back into the RV.
- 9:54SPEAKER_00: Use a secondary containment pan beneath equipment and condensate lines.
- 9:59SPEAKER_00: Inspect for hidden water beneath vinyl, laminate, or floating floors.
- 10:04SPEAKER_00: The best extraction tool is often a small portable vacuum outside the unit connected to a long hose, while the technician works inside with a narrow wand.
- 10:14SPEAKER_00: Controlled demolition in an RV.
- 10:17SPEAKER_00: Controlled demolition is not automatically a failure of restoration.
- 10:21SPEAKER_00: In a laminated RV assembly, it is often the only way to reach water trapped behind the finish.
- 10:27SPEAKER_00: When to open the assembly.
- 10:29SPEAKER_00: Consider controlled access when moisture readings remain high after 24 hours of drying.
- 10:35SPEAKER_00: Readings are high at both the top and bottom of a wall.
- 10:38SPEAKER_00: A wall or ceiling panel is swollen, soft, or delaminated.
- 10:43SPEAKER_00: Water is trapped behind cabinets or trim.
- 10:46SPEAKER_00: Insulation is saturated or compacted.
- 10:49SPEAKER_00: The assembly contains standing water.
- 10:51SPEAKER_00: The interior finish prevents evaporation.
- 10:54SPEAKER_00: There is visible mold, sewage, or other contamination.
- 10:58SPEAKER_00: EPA guidance recommends prompt drying, extraction, fans, dehumidification, and removal of materials that cannot be dried.
- 11:06SPEAKER_00: Wood surfaces and wet paneling should be opened or moved away from the structure to permit drying.
- 11:12SPEAKER_00: EPA water damage guidance, RV specific access strategy.
- 11:16SPEAKER_00: In most cases, open from the interior, not by cutting the exterior fiberglass or roof membrane.
- 11:22SPEAKER_00: A typical sequence is remove trim, molding, furniture, or cabinets that block access.
- 11:28SPEAKER_00: Photograph and label each removed component.
- 11:30SPEAKER_00: Confirm the location of wiring, plumbing, gas lines, and framing.
- 11:35SPEAKER_00: Remove only enough interior paneling to expose the wet substrate.
- 11:39SPEAKER_00: Cut back to sound, dry, structurally reliable material.
- 11:43SPEAKER_00: Remove saturated or deteriorated luon, plywood, insulation, and adhesive residue.
- 11:49SPEAKER_00: Leave the area open while the remaining framing and core are monitored.
- 11:53SPEAKER_00: Small access holes may be useful in some assemblies, but a few holes are not a substitute for opening a bonded panel when water is trapped across a large adhesive plane.
- 12:04SPEAKER_00: A high-pressure cavity drying system can be useful where the assembly is intact and the cavity can be properly connected.
- 12:12SPEAKER_00: Some commercial systems use small access holes and either force air into or pull air from wall assemblies.
- 12:19SPEAKER_00: Dry force air drying system, contaminated water.
- 12:23SPEAKER_00: If the water came from sewage, a toilet containing waste, a flood, a contaminated holding tank, or another questionable source, the project may require containment, cleaning, disposal, and microbial remediation procedures rather than drying alone.
- 12:39SPEAKER_00: EPA emphasizes that materials affected by contaminated water require different precautions than clean water losses.
- 12:46SPEAKER_00: If visible mold is present or porous materials have remained wet for an extended period, consult current mold remediation guidance and qualified professionals.
- 12:56SPEAKER_00: EPA Mold Cleanup Guidance, air movement in a narrow RV.
- 13:01SPEAKER_00: Air movement should expose wet surfaces to drier air without damaging finishes or creating an unsafe obstacle course.
- 13:09SPEAKER_00: Create a directed air loop.
- 13:11SPEAKER_00: A good RV setup usually includes one air mover aimed along the wet wall or ceiling, a second air mover aimed across the floor or cabinet base, a return path toward the dehumidifier inlet, a controlled opening or duct for the dehumidifier's process air.
- 13:27SPEAKER_00: Cavity air movement where the assembly has been opened, do not aim every fan directly at the same stain.
- 13:33SPEAKER_00: The goal is to move air across the whole wet assembly and return moisture-laden air to the dehumidifier.
- 13:39SPEAKER_00: A practical starting point is one low-profile air mover per affected compartment or drying zone, then add or reposition units based on moisture trends.
- 13:49SPEAKER_00: The S-500 approach traditionally scales air movement to affected rooms and wet surface area.
- 13:55SPEAKER_00: An RV requires the same principle but with smaller, more directional equipment because the rooms are narrow and highly connected.
- 14:02SPEAKER_00: S500 Public Reference Text.
- 14:05SPEAKER_00: Choose compact equipment.
- 14:07SPEAKER_00: Representative professional air movers include, for the full table, please open this article on boondocking.
- 14:13SPEAKER_00: Drypod air mover, VeloPro Air Mover, Sahara Pro X4.
- 14:18SPEAKER_00: Protect the RV.
- 14:20SPEAKER_00: Keep air movers out of aisles when possible.
- 14:22SPEAKER_00: Maintain access to the exit and emergency windows.
- 14:26SPEAKER_00: Do not block the refrigerator, furnace, water heater, or electrical panel.
- 14:31SPEAKER_00: Do not place equipment on wet electrical cords.
- 14:34SPEAKER_00: Use low speed near loose wallpaper, ceiling liners, or fragile trim.
- 14:38SPEAKER_00: Do not direct high-velocity air into a loose exterior skin or an existing delamination.
- 14:44SPEAKER_00: Use ducting when equipment must remain outside.
- 14:47SPEAKER_00: Dehumidification.
- 14:49SPEAKER_00: The most important RV constraint.
- 14:52SPEAKER_00: Because an RV has a small air volume, relative humidity can rise quickly once air movement begins.
- 14:59SPEAKER_00: The drying chamber should normally be closed.
- 15:02SPEAKER_00: Keep windows and doors closed.
- 15:04SPEAKER_00: Seal unnecessary openings.
- 15:06SPEAKER_00: Run a dehumidifier continuously.
- 15:09SPEAKER_00: Drain condensate outside or into a controlled container.
- 15:13SPEAKER_00: Open the RV briefly only when necessary for inspection or a deliberate air exchange.
- 15:20SPEAKER_00: Ventilation is appropriate only when the outdoor air has a lower moisture content than the air inside.
- 15:26SPEAKER_00: On a hot, humid, rainy or coastal day, opening windows may add moisture rather than remove it.
- 15:33SPEAKER_00: Equipment examples.
- 15:34SPEAKER_00: A compact LGR dehumidifier may draw approximately 5 to 5.5 amps and fit in a footprint around 18 by 12x22 inches.
- 15:44SPEAKER_00: Larger LGR machines may draw 6.5 to 8.8 amps and weigh approximately 99 to 106 pounds.
- 15:52SPEAKER_00: Dry Ease Revolution LGR, DryEs LGR 6000 LI, DryES LGR 7000 XLI.
- 16:00SPEAKER_00: For many RV losses, one compact LGR is more appropriate than a large restoration dehumidifier.
- 16:07SPEAKER_00: The machine should be positioned so that its intake receives humid cabin air.
- 16:12SPEAKER_00: Its outlet does not short circuit directly back into the intake.
- 16:15SPEAKER_00: The warm discharge air is directed toward the wet zone.
- 16:18SPEAKER_00: Condensate cannot spill onto the floor.
- 16:21SPEAKER_00: Filters and exhaust openings remain unobstructed.
- 16:24SPEAKER_00: A desiccant dehumidifier may be useful in cold conditions or dense assemblies, but it can require substantially more power and may need process and reactivation ducting.
- 16:35SPEAKER_00: It is usually an outside the RV solution unless the unit is specifically designed and safely configured for the space.
- 16:42SPEAKER_00: Heat, gentle, controlled, and secondary.
- 16:45SPEAKER_00: Heat can improve evaporation by warming the material and lowering relative humidity at a given absolute moisture level.
- 16:52SPEAKER_00: It should not be used as a substitute for extraction and dehumidification.
- 16:56SPEAKER_00: Practical starting conditions.
- 16:58SPEAKER_00: For many interior RV drying projects, begin around 65 to 80 degrees Fahrenheit air temperature, 40 to 55% relative humidity.
- 17:08SPEAKER_00: Surface temperature safely above the dew point.
- 17:11SPEAKER_00: No condensation on walls, windows, or metal framing.
- 17:14SPEAKER_00: These are operational starting points, not universal S500 pass fail requirements.
- 17:20SPEAKER_00: Always follow the RV manufacturer's and adhesive manufacturer's temperature limits.
- 17:26SPEAKER_00: Avoid excessive heat.
- 17:27SPEAKER_00: Excessive heat can dry the surface faster than the core, loosen wallpaper or vinyl, damage sealants, distort plastic trim, affect adhesives, expand or deform some foam core or composite systems.
- 17:41SPEAKER_00: Increase delamination risk.
- 17:43SPEAKER_00: Crane composites, for example, warns in its fiberglass repair guidance that overheating certain composite cores can cause expansion and swelling.
- 17:52SPEAKER_00: Crane composites RV repair guidance.
- 17:55SPEAKER_00: A 1000-watt electric heater uses approximately 8.3 amps at 120 volts.
- 18:01SPEAKER_00: A 1500 watt heater uses approximately 12.5 amps on a 15-amp circuit.
- 18:09SPEAKER_00: That can consume nearly the entire available capacity before a dehumidifier or air mover is connected.
- 18:17SPEAKER_00: If combustion heat is used, the heater must remain outside the RV and deliver clean, indirect heat through properly installed ducting.
- 18:27SPEAKER_00: Never operate gasoline, diesel, propane, or other combustion engines inside the RV.
- 18:35SPEAKER_00: CDC Flood Cleanup Safety Guidance, Dry Ease Dragon Indirect Fired Heater Manual.
- 18:41SPEAKER_00: Electrical and Space Planning.
- 18:43SPEAKER_00: RV electrical service is often the limiting factor.
- 18:46SPEAKER_00: A 15 amp household circuit provides about 1800 watts in theory.
- 18:52SPEAKER_00: A 30 amp RV service provides approximately 3,600 watts at 120 volts.
- 18:59SPEAKER_00: A 50 amp RV service provides approximately 12,000 watts across its two 120 volt legs.
- 19:07SPEAKER_00: Airstream Shore Power Explanation.
- 19:09SPEAKER_00: Example Power Budgets.
- 19:11SPEAKER_00: For the full table, please open this article on boondocking.tips.
- 19:16SPEAKER_00: These are nameplate planning values, not guarantees.
- 19:20SPEAKER_00: Motors and compressors may draw more during startup.
- 19:23SPEAKER_00: On a 15-amp circuit, a conservative field plan is to stay near or below 12 amps and leave margin for startup and wiring conditions.
- 19:33SPEAKER_00: During drying, turn off or isolate unnecessary RV loads such as roof air conditioning, electric water heater, microwave, toaster or coffee maker, space heater, refrigerator electric heating element, battery converter or charger when appropriate.
- 19:50SPEAKER_00: Entertainment systems.
- 19:52SPEAKER_00: Do not assume that a convenience outlet on an air mover creates a new electrical circuit.
- 19:57SPEAKER_00: It may only pass power through from the same branch circuit.
- 20:01SPEAKER_00: Keep cords and connectors dry, use GFCI protection, and follow the equipment manufacturer's instructions.
- 20:08SPEAKER_00: Moisture content targets for RV materials.
- 20:12SPEAKER_00: The most important rule is, the final drying target should be based on the unaffected dry standard for that exact assembly.
- 20:20SPEAKER_00: A commonly used S500 style interpretation is to set the drying goal at or near the dry standard, often within approximately 10% of the baseline value.
- 20:31SPEAKER_00: For example, if an unaffected wood component measures 12%, a practical maximum goal would be approximately 13.2%.
- 20:40SPEAKER_00: Treat this as a documented project target, not as a universal number for every RV or climate.
- 20:47SPEAKER_00: Public S500 5th edition draft text.
- 20:50SPEAKER_00: For the full table, please open this article on boondocking.
- 20:55SPEAKER_00: The U.S.
- 20:55SPEAKER_00: Forest Service reports that wood generally stabilizes at lower in-service moisture levels, and that serious decay risk increases when wood remains near or above the fiber saturation range.
- 21:08SPEAKER_00: APA guidance identifies approximately 19% moisture content as a level at which wood components become particularly vulnerable to moisture-related deterioration.
- 21:18SPEAKER_00: USDA Wood Handbook.
- 21:21SPEAKER_00: USDA Wood Biodeterioration Guidance.
- 21:25SPEAKER_00: APA Moisture Mitigation Guidance.
- 21:29SPEAKER_00: Daily Monitoring Protocol.
- 21:31SPEAKER_00: Readings should be collected at approximately the same time each day using the same instruments and test points whenever possible.
- 21:39SPEAKER_00: Daily atmospheric readings.
- 21:41SPEAKER_00: Record date and time outdoor temperature and RH.
- 21:45SPEAKER_00: Interior temperature and RH.
- 21:48SPEAKER_00: Dew point.
- 21:49SPEAKER_00: Grains per pound or another moisture content indicator if available.
- 21:53SPEAKER_00: Surface temperature of wet materials.
- 21:56SPEAKER_00: Dehumidifier inlet and outlet conditions if available.
- 22:00SPEAKER_00: Condensate volume or pump operation.
- 22:02SPEAKER_00: Weather changes.
- 22:03SPEAKER_00: Whether doors, windows, or slides were opened.
- 22:06SPEAKER_00: Daily material readings.
- 22:08SPEAKER_00: At each mapped point, record, location code, material, meter mode and scale, reading, depth of measurement, visual condition, comparison with the previous day, action taken, what the trend should show.
- 22:23SPEAKER_00: A functioning drying system should produce a general downward trend.
- 22:26SPEAKER_00: A plateau or increase requires investigation.
- 22:30SPEAKER_00: Possible causes include active or intermittent leakage, wet material hidden behind an unremoved panel, foam or luan retaining water in a bonded assembly, insufficient dehumidification, excessive outside air infiltration, poor air contact with the wet surface, condensate discharge failure, equipment shutdown, meter interference from metal framing, foil, fasteners, or wiring, moisture migration from an adjacent compartment.
- 22:57SPEAKER_00: If readings do not improve after approximately 24 hours, do not simply add more fans.
- 23:03SPEAKER_00: Re-inspect, reopen the assembly, verify the leak repair, check the psychrometrics, and confirm that the equipment is actually operated.
- 23:12SPEAKER_00: Daily drying log checklist.
- 23:14SPEAKER_00: Site and safety.
- 23:15SPEAKER_00: Date and time recorded.
- 23:17SPEAKER_00: Water source controlled or repaired.
- 23:19SPEAKER_00: Shore power and generator status checked.
- 23:22SPEAKER_00: Wet electrical components isolated.
- 23:24SPEAKER_00: GFCI protection tested.
- 23:27SPEAKER_00: Cords and plugs inspected.
- 23:29SPEAKER_00: Propane and fuel hazards addressed.
- 23:31SPEAKER_00: Exit and emergency access maintained.
- 23:34SPEAKER_00: Equipment stable and protected from water.
- 23:37SPEAKER_00: Inspection and mapping.
- 23:38SPEAKER_00: Moisture map updated.
- 23:40SPEAKER_00: New wet areas checked.
- 23:42SPEAKER_00: Roof, wall, ceiling, floor, cabinet, and slide out zones inspected.
- 23:47SPEAKER_00: Dry standard readings confirmed.
- 23:49SPEAKER_00: Visible delamination or swelling documented.
- 23:52SPEAKER_00: Odor, mold or contamination noted.
- 23:55SPEAKER_00: Photographs taken.
- 23:57SPEAKER_00: Equipment.
- 23:58SPEAKER_00: Air movers operating.
- 23:59SPEAKER_00: Airflow aimed across wet surfaces.
- 24:02SPEAKER_00: Dehumidifier operating.
- 24:04SPEAKER_00: Filters clean.
- 24:05SPEAKER_00: Condensate hose draining correctly.
- 24:07SPEAKER_00: Equipment amperage checked.
- 24:09SPEAKER_00: Circuit and breaker identified.
- 24:11SPEAKER_00: No unnecessary RV appliances competing for power.
- 24:14SPEAKER_00: Heat source operating within approved limits.
- 24:17SPEAKER_00: Measurements.
- 24:18SPEAKER_00: Interior temperature recorded.
- 24:22SPEAKER_00: Dew point or grains recorded.
- 24:24SPEAKER_00: Surface temperatures checked.
- 24:26SPEAKER_00: Material readings.
- 24:28SPEAKER_00: GS taken at all map points.
- 24:30SPEAKER_00: Cavity or deep wall readings taken where applicable.
- 24:34SPEAKER_00: Readings compared with the dry standard.
- 24:37SPEAKER_00: Any plateau or rebound investigated.
- 24:40SPEAKER_00: Decisions.
- 24:41SPEAKER_00: Equipment repositioned if needed.
- 24:44SPEAKER_00: Additional demolition considered.
- 24:46SPEAKER_00: Containment or PPE requirements reassessed.
- 24:50SPEAKER_00: Customer, owner, adjuster, or technician updated.
- 24:54SPEAKER_00: Next inspection time scheduled.
- 24:56SPEAKER_00: All changes documented.
- 24:58SPEAKER_00: Completion criteria.
- 25:00SPEAKER_00: Drying should not be declared complete because the visible stain has lightened or the RV feels less humid.
- 25:07SPEAKER_00: A defensible completion decision should include all of the following.
- 25:11SPEAKER_00: The water source is repaired or controlled.
- 25:14SPEAKER_00: All affected areas have been inspected and mapped.
- 25:17SPEAKER_00: Hidden cavities and bonded assemblies have been evaluated.
- 25:20SPEAKER_00: Liquid water has been extracted.
- 25:23SPEAKER_00: Material readings meet the documented drying goals.
- 25:26SPEAKER_00: Wood is at or near the unaffected dry standard and below the project's maximum target.
- 25:32SPEAKER_00: Composite and foam areas show no free water or abnormal relative readings.
- 25:37SPEAKER_00: Interior RH is stable and does not rapidly rebound.
- 25:41SPEAKER_00: There is no active condensation, odor, visible microbial growth, or unexplained dampness.
- 25:47SPEAKER_00: The structure is sound, with no soft framing, failed adhesive bond, severe swelling, or progressive delamination.
- 25:54SPEAKER_00: Equipment has been operated through a final verification period without moisture rebound.
- 25:59SPEAKER_00: All readings, photographs, equipment changes, and decisions are documented.
- 26:03SPEAKER_00: For high-consequence roof and wall repairs, a useful additional check is a controlled 12 to 24 hour off-cycle after the area appears dry.
- 26:12SPEAKER_00: Recheck the mapped points and cavity conditions.
- 26:15SPEAKER_00: If moisture rises substantially, the assembly is not ready to close.
- 26:19SPEAKER_00: Rebuild readiness checklist.
- 26:21SPEAKER_00: Before reinstalling panels, cabinets, insulation flooring, or roof materials, leak repair has been tested under realistic conditions.
- 26:29SPEAKER_00: Roof and wall substrates meet documented moisture targets.
- 26:33SPEAKER_00: Deteriorated luon plywood framing or insulation has been removed.
- 26:37SPEAKER_00: Remaining framing is structurally sound.
- 26:39SPEAKER_00: Adhesive surfaces are clean and dry.
- 26:42SPEAKER_00: Delamination has been repaired, or the panel has been replaced.
- 26:46SPEAKER_00: No trapped water remains behind the exterior skin.
- 26:49SPEAKER_00: No microbial contamination remains outside the approved scope.
- 26:53SPEAKER_00: Replacement materials are dry and acclimated.
- 26:56SPEAKER_00: OEM or adhesive manufacturer temperature and moisture requirements are satisfied.
- 27:01SPEAKER_00: Electrical, plumbing, propane, and slide-out systems are ready for reinstallation.
- 27:06SPEAKER_00: Final moisture map and photographs are complete.
- 27:09SPEAKER_00: Owner and other materially interested parties have received the documentation.
- 27:13SPEAKER_00: Conclusion: Drying a wet RV roof or wall requires more than placing a fan inside and waiting.
- 27:20SPEAKER_00: The restoration team must think in terms of water pathways, bonded layers, vapor movement, power limits, and access to concealed materials.
- 27:30SPEAKER_00: The most reliable approach is to extract liquid water first.
- 27:35SPEAKER_00: Establish dry standards from unaffected areas.
- 27:38SPEAKER_00: Open assemblies that cannot dry in place.
- 27:41SPEAKER_00: Use compact, low-amp air movers.
- 27:44SPEAKER_00: Keep the RV closed while dehumidifying.
- 27:48SPEAKER_00: Apply heat gently and only when the materials and power supply allow it.
- 27:53SPEAKER_00: Monitor both material moisture and atmospheric conditions.
- 27:57SPEAKER_00: Rebuild only after the substrate, cavity, and adhesive interfaces are demonstrably ready.
- 28:03SPEAKER_00: The central lesson is simple.
- 28:06SPEAKER_00: An RV is smaller than a house, but its assemblies are often less forgiving.
- 28:11SPEAKER_00: When drying is carefully mapped, electrically planned, and verified against material-specific targets, a mobile unit can be restored without trapping moisture inside the next wall or roof repair.
- 28:24SPEAKER_00: All links to sources are available in the text version of this article.
- 28:28SPEAKER_00: You can find the full article at boondocking.tips blog.
- 28:32SPEAKER_00: Thanks for listening.
- 28:34SPEAKER_00: For more research driven boondocking guides, off grid camping tips, RV travel advice, and van life strategies, visit boondocking.tips.
- 28:44SPEAKER_00: That's boondocking.tips for the full written research and new camping updates.