Soil
Exposed ground releases moisture into the joist space all season.
The low space under the floor
Crawl space waterproofing and encapsulation.
Moisture and standing water under a low floor are planned as their own scope, not as a basement system with the ceiling lowered.
What is usually wrong
Bulk water
Grade and downspouts can put standing water on the soil. A cover on a pond traps the pond.
Air above
Damp air moves through the floor you walk on. A musty living room can start here.
Old insulation
Hanging, wet insulation is a symptom. Replacing it first hides the source.
Drainage
A drain and a pump when water arrives faster than a cover can manage.
Not a basement
Full-height leaks belong on basement waterproofing.
What encapsulation is, and is not
- A ground cover and a sealed perimeter, after standing water has a way out.
- Vents and access still have to be decided. The space is not simply closed and forgotten.
- Joists that are already rotten are a framing or engineering question.
- The estimate names area, access, debris, drainage, and any pump. No sample price.
Kept on this page on purpose
Encapsulation
Separates the house from damp soil. It follows drainage, it does not replace it.
Crawl space drainage
Used when the low point collects water. The outlet still has to leave the house.
Odour upstairs
A reason to look under the floor before treating the living room.
Access
Low height changes the work. It is written that way.
Coverage
Ontario, confirmed by address. See service areas.
The pump
If the outlet is a pit, see sump pumps.
A low volume, not a short basement
Why the page is separate
Ontario houses are not all full basements. Additions, older wings, porches that became rooms, and some whole homes sit over a crawl space. Crawl space waterproofing, crawl space encapsulation, crawl space moisture, and crawl space water problems belong together. The basement page is not a template for this one, because the ceiling is the floor you walk on and the ground is often still soil.
Damp air moves through penetrations into the rooms above. A musty living room can be a crawl space symptom. Smell upstairs is a reason to look under the floor before treating the living room as the source.
Soil and bulk water
Exposed ground releases moisture into the joist space all season. A wet spring makes that obvious. A dry August does not mean the July smell was imaginary. Encapsulation on top of standing water traps the water. The cover follows drainage. It does not replace it.
Grade, downspouts, and a low point under the house can put a pond on the soil. Some spaces need grade correction and a ground cover only. Some need a drain and a pump because water arrives faster than it can leave. The visit decides. A drain with nowhere to discharge is not an improvement.
What encapsulation means
Encapsulation is a ground cover and a sealed perimeter that separates the house from damp soil, with a decision about vents, access, and moisture that still needs a way out. It is not a plastic sheet thrown over mud. Vents are not automatically closed and forgotten, and they are not automatically left open. The space has to match the way the house is built.
Old, hanging, wet insulation is a symptom. Replacing it first hides the source. Debris and failed vapour barriers from an earlier attempt are part of the scope when they are in the way. Access and height change the labour. A low space is written as a low space.
What it will not fix
Rotted joists, failed posts, or a settling pier need a carpenter or an engineer, depending on the damage. Moisture control can protect a repair. It does not replace one. Woveh does not present encapsulation as a structural remedy.
A full-height wet basement, a leaking crack in a tall wall, and a sump that serves a finished room are different scopes. They can share a house with a crawl space. They should not be forced into one paragraph or one price.
The outlet
If water must be pumped, the discharge has to leave the foundation and not recycle under the house. Winter icing of that line is the same Ontario problem as on a basement sump, just in a harder place to see. The pump page describes switches, check valves, and backup as a general option. Nothing here promises a brand or a runtime.
Before the cover goes down, someone should be able to say where the water will go in a storm. A sealed space with no outlet for bulk water becomes a closed pond under the floor.
Cost factors
Crawl space waterproofing cost and encapsulation cost move with area, height and access, how much debris and old insulation must be removed, whether water must be drained, the ground cover and sealing details, and any pump. The estimate is in CAD after the space has been seen. No sample price is offered, because two houses on one street can be opposite cases.
Service coverage is Ontario, including Ottawa, Sudbury, and Thunder Bay, confirmed by address. A listed city is not an office. That is said at the estimate, not implied by a dot on a map.
Working in a space you cannot stand in
Access changes every sentence
Height, hatches, and what is stored in the way decide whether a crawl space can be worked safely. A low wing under an addition is not the same job as a taller dirt-floor volume under the whole house. The estimate names that constraint. It does not quote a basement price and then discover the ceiling.
Debris, old insulation, and a failed sheet from an earlier attempt have to come out before a new cover means anything. That removal is a line, because it is labour, and because what comes out is often wet. Leaving it underneath a new liner traps the problem you can already smell upstairs.
Water first, plastic second
Standing water is drained, or given a pump and a discharge that leaves the house, before anyone talks about encapsulation. A liner over a pond is a closed pond. Grade and downspouts outside may be the entire repair. If they are, they should be recommended without a plastic package attached.
Some spaces only need a ground cover because the soil is damp and no bulk water arrives. Some need a drain because a low point fills in every storm. The visit is how you tell them apart. A dry August does not erase a July pond. Ask what the space did in the spring.
Air that reaches the rooms
The floor you walk on is this ceiling. Penetrations, gaps at the rim, and a bathroom above a damp bay let air move. A musty living room can start here. Treating the room with fragrance does not dry the joists. Drying the joists does not rebuild ones that have already rotted.
Rotted framing, failed posts, and a settling pier need a carpenter or an engineer. Moisture control can be scheduled so it does not undo their repair, and so their repair is not laid on mud. Woveh does not describe encapsulation as a structural fix.
Vents, hatches, and the liner
Vents are a decision, not a slogan. Leaving them open can feed damp summer air. Closing them without a plan for bulk water can seal a wet space. The written scope says what happens to vents, to the access hatch, and to any mechanical equipment that must remain reachable. A liner that buries the shutoff for the house is not a finish.
The cover is there to separate the house from soil moisture. Seams, piers, and the perimeter are the details that make that true. A loose sheet is a drop cloth. The estimate should be specific enough that you can tell the difference.
The pump you cannot see easily
If a pump is required, it has the same duties as a basement sump: a float that moves, a check valve, and a discharge that does not recycle or ice shut against the foundation. It is harder to forget a pump in a hallway than a pump under a hatch. The scope should say how you will reach it after the liner is in.
Battery backup, if it is relevant, is the same general option described on the sump page. No model and no runtime is promised. A crawl space does not get a different exaggeration.
Cost and the rest of the house
Area, height, debris, drainage, the cover, and any pump move the price. The estimate is in CAD after someone has been in the space. Two houses on one street can differ by a hatch and a pond. A full basement leak in another part of the same house is a different page and, often, a different line.
Ontario coverage is confirmed by address. A listed city is not an office under the floor. Winter access to an exterior discharge still matters. The smell upstairs is a reason to look, not a reason to skip the look and buy a machine.
Before the hatch is the whole storey
What to say in the request
Say how you get in, roughly how high the space is, whether you have seen standing water or only damp soil, and whether the smell is upstairs, in the space, or both. A photo from the hatch is enough to start. You do not need to know the word encapsulation.
If part of the house is a full basement and part is a crawl space, say that. They can share a visit and still be different lines. The basement page does not disappear because a low wing exists, and this page does not pretend the low wing is a room.
What will not be promised from the sidewalk
No one can price a crawl space honestly from the street. Area, height, debris, and whether a pond is under the liner are invisible until someone is in it. The estimate comes after that look, in CAD, with the outlet for any pump written down. A number given before the hatch is opened is a guess.
Ontario coverage still depends on the address. A listed town means people there ask about this work. It does not mean the space has been seen, and it does not mean a crew is waiting under the floor.
Crawl space questions
What is crawl space encapsulation?
A ground cover and sealed perimeter that separates the house from damp soil. It is not a sheet thrown over standing water.
What are signs of crawl space moisture?
Damp soil, standing water, darkened joists, a musty smell upstairs, or insulation hanging down.
Does every crawl space need a drainage system?
No. Some need grade correction and a cover. Some need a drain because water arrives faster than it can leave.
How is this different from basement waterproofing?
A basement is a room with a slab. A crawl space is a low volume over soil, with joists close overhead.
Can encapsulation fix rotten joists?
No. Rotted framing needs a carpenter or an engineer. Moisture control can protect a repair. It does not replace one.
What affects the cost?
Area, height, access, debris, whether water must be drained, and any pump. The estimate is in CAD after the space is seen.
Tell us what is under the floor.
Damp soil, standing water, or a smell upstairs.
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