Tear-out is the part of water damage restoration nobody wants, and the part that most often goes wrong. Remove too little and mould grows behind the new paint. Remove too much and the rebuild costs more than it should, and the insurer questions the scope. Controlled demolition means taking out exactly what the readings and the water category say cannot be saved, in a way that keeps dust and contamination out of the rest of the house.
We handle tear-out across Toronto and the GTA as part of our restoration work and as a standalone service when another company did the extraction. Our crews cut to a clean line, protect the areas that stay, bag and dispose of the debris, and leave the space ready for drying. Everything removed is photographed with its location and the moisture reading that justified it.
When the framing reads dry, the same file goes to Rebuild Pro Contracting, our sister company, for insulation, drywall, taping, paint and flooring. One record from first cut to final coat means fewer questions from the adjuster and no gaps between trades.
What we do on site
- Map the moisture in every affected wall, floor and ceiling and mark the removal boundary based on readings and water category.
- Set up containment with sealed plastic and a HEPA negative air machine before any cutting starts.
- Photograph each area with the reading visible before removal.
- Make clean flood cuts at 2 or 4 feet with a laser-marked line, then remove drywall, insulation and vapour barrier below the line.
- Remove wet flooring, underlay, baseboards, and lower cabinets that cannot be saved, and pull nails and screws from the framing.
- Bag debris inside containment, remove it along a protected path, and dispose of it properly.
- HEPA vacuum the exposed framing and slab, apply antimicrobial where the category requires it, and hand the space to the drying crew.
How do you decide what gets removed and what stays?
Two things decide it: the moisture reading and the water category. Materials that can reach their dry standard within a reasonable drying window stay. Materials that cannot come out. Drywall wet for under 48 hours from clean water can usually be dried. Drywall that is soft, swollen or has been wet for days cannot. Fibreglass and cellulose insulation hold water against the framing and almost always come out once wet. Particleboard, MDF and laminate flooring delaminate and are removed.
The category overrides the readings. Anything porous that contacted Category 2 or 3 water is removed regardless of how it reads. This is the IICRC S500 standard and it is what insurers expect to see in the scope.
- Drywall: dry in place if clean water and under 48 hours, otherwise remove
- Insulation: remove when wet, it does not dry in a wall cavity
- Carpet pad, laminate, MDF, particleboard: remove when wet
- Hardwood: sometimes salvageable with mat drying, otherwise remove
- Framing, concrete, tile on slab: dry and treat, rarely removed
What is a flood cut and why do you cut at 2 or 4 feet?
A flood cut is a horizontal cut through drywall at a set height above the floor, most often 2 feet or 4 feet, with everything below it removed. The height is chosen so that the cut sits at least 30 cm above the highest moisture reading and lines up with standard drywall sheet dimensions, which makes the rebuild cleaner and cheaper. A 2-foot cut handles most basement floods where water was under 20 cm deep. A 4-foot cut is used for deeper water, wicking that travelled high, or Category 3 losses.
We mark the line with a laser level so it is straight and consistent around the room, then score and snap the drywall rather than smashing it. That keeps the top section intact and the studs undamaged.
How do you keep the dust and mould out of the rest of my house?
Containment goes up before the first cut. That means plastic sheeting sealed over doorways and HVAC registers in the work area, and a negative air machine with a HEPA filter pulling air out of the space so any dust or spores move toward the filter, not toward the kitchen. Debris is bagged inside the containment and carried out along a protected path. Floors and stairs outside the work area are covered.
If visible mould is present on the material being removed, the work is treated as a mould remediation and the containment is tighter. If there is any question, we test before we cut.
Can I do the tear-out myself to save money on the claim?
You can, but it usually does not save money and it can cost you coverage. Insurers pay for tear-out as part of the claim, so doing it yourself just removes a covered item from the invoice. The bigger issue is documentation. If drywall is gone before the adjuster or our technician measures it, there is no reading to prove it needed to come out, and the insurer may dispute the rebuild scope. Grey or black water and any visible mould should never be handled without protective equipment and containment.
When the water source is a covered peril, tear-out of unsalvageable materials is part of the covered claim on Ontario home policies. The adjuster approves the scope based on documentation, which is why we photograph every area with the moisture reading before removal and note the water category. Materials removed without that record are often disputed. If you have already had someone else do the extraction, we can still document and perform the tear-out and bill your insurer directly through a Direction to Pay.
Frequently asked questions
Does wet drywall always need to be replaced?
No. Drywall that got wet from clean water and is dried within about 48 hours usually keeps its strength and can stay. Drywall that is soft to the touch, sagging, stained through, or was touched by grey or black water comes out. The paper facing is a food source for mould, so the deciding factor is how long it stayed wet and what was in the water.
Can wet insulation be dried and reused?
Fibreglass batts and blown cellulose cannot be dried inside a wall cavity and are removed once wet. Cellulose in particular holds water like a sponge and collapses. Closed-cell spray foam is the exception and usually stays. Rigid foam board can often be dried and reused if it was not contaminated.
How long does tear-out take for a flooded basement?
A typical finished basement of 60 to 100 square metres takes one to two days with a crew of two or three. Larger basements, Category 3 losses with more containment, and built-ins or finished ceilings add time. We start drying equipment as soon as each area is cleared rather than waiting for the whole tear-out to finish.
Will you remove the ceiling if the leak came from upstairs?
If the ceiling drywall is sagging, stained through, or reads wet, yes. We cut out the wet section to the nearest joist so the rebuild has a clean edge to attach to. If the ceiling is dry to the meter and only the insulation above it is wet, we can sometimes remove the insulation from above and dry the cavity without taking the drywall down.
What happens to the debris?
Everything is bagged in the work area, carried out along a covered path, and taken to a licensed waste facility. Category 3 materials are bagged separately and handled as contaminated waste. Disposal is included and itemized on the claim.