Roofing and Waterproofing for Strata and Commercial Buildings
Flat and low-slope roof replacement, plaza and parkade membranes, and the tie-in details where most leaks actually start.
Engineer-led scopingLicensed & insuredWorkSafeBC in good standingStrata & commercial specialists
The warning signs
Where roofs actually fail
Most roof leaks in Metro Vancouver buildings do not start in the field of the roof. They start at the details, which is also where roof projects go wrong when they are treated as a commodity purchase.
Leaks at drains and penetrations
The details and transitions fail years before the membrane field does.
Ponding water
Standing water after 48 hours means drainage or slope needs correcting, not just patching.
Wet insulation
A membrane can look fine while the insulation below it is saturated. A moisture survey answers it objectively.
End-of-warranty membrane
An aging system near the end of its warranty deserves assessment before it becomes an emergency.
Before we quote
The roof is part of the envelope. We treat it that way
- Condition assessment
The existing assembly, drainage, and every detail and tie-in, documented. - Moisture survey
Where wet insulation is suspected, we measure instead of assuming, because it changes the scope and the price. - Above and below
For plaza decks and parkades, access and reinstatement usually drive more cost than the membrane itself, so we assess both sides of it.
You get a scope that states what assembly is going on, why, and what the details will look like.
Scope of work
What our roofing work includes
- Flat and low-slope roof replacement: from conventional assemblies to inverted protected roofs
- Plaza deck and parkade membrane replacement with reinstatement
- Targeted repairs and maintenance programs that extend service life
- Drainage improvements: added drains, overflows, slope correction
- Detail renewal at parapets, penetrations and rooftop equipment
- Manufacturer inspections where the system warranty requires them
Warranties: 5 year workmanship warranty against water ingress plus the membrane manufacturer’s system warranty, typically 10 to 20 years depending on assembly. We register the manufacturer warranty and hand the certificate over at close-out.
What to expect
Watertight every night
Work is sequenced so the building is watertight at the end of every day. Crane and hoist days are scheduled and noticed, and landscaping and parking below work areas are protected.
3-8 wks
Typical roof replacement, weather depending
Nightly
Building left watertight at the end of every shift
10-20 yr
Typical manufacturer system warranties by assembly
Sectional
Parkade work phased with a parking plan, not full closure. Some restrictions may apply
For strata councils
The most depreciation-report-driven renewal there is
Councils usually take roofing to owners with the depreciation report in hand. We build the proposal to line up with it.
Report-aligned pricing
Proposal language matched to your report’s component and cost structure.
Good/better options
Assembly alternatives priced side by side where the roof allows them.
Warranty terms in writing
Workmanship term, manufacturer term, and the maintenance that keeps them valid.
Parking and access plan
Phased closures worked out with the property manager and owners before mobilisation.
Recent work
Roofing and waterproofing projects
Common questions
Roofing FAQs
Repair or replace?
If the membrane has life left and the insulation is dry, targeted detail repairs are often the right money. A moisture survey answers the insulation question objectively, and we show you the results either way.
Can you overlay the existing roof?
Sometimes, where code, weight and moisture conditions allow. It saves tear-off cost but buries the old assembly. We price both paths when overlay is viable.
What warranty do we get?
5 year workmanship warranty against water ingress plus the manufacturer’s system warranty. We register it and deliver the certificate at close-out.
Do we need to close the parkade during membrane work?
Usually only in sections. Phased closures with a parking plan are part of our proposal on parkade projects.
Get an engineer-informed assessment of your building
Tell us what your building is doing: the stain, the leak, the report recommendation. We will tell you what we would investigate first and what a realistic scope looks like. No obligation, and your council gets something in writing either way.