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Second-Storey Additions
Adding a floor above a bungalow or garage? The new floor slab — formed, shored and poured over the existing structure — is the heart of the job.
Pillar Service
Suspended Slabs — Built In Place, With Conventional Formwork
Second-storey additions, elevated floors, mezzanines, balconies and decks-over-garages — poured on site with engineered shoring and conventional forms. No precast constraints, no geometry we can’t build. Engineered, documented, and built as drawn.
Why In-Place?
Why builders choose conventional forming
Precast panels are great when the site, crane and geometry line up. When they don’t — which is most renovation sites in Halton — an in-place pour with conventional formwork wins:
- Any footprint, any angle. We form to your drawings, not to a panel catalogue
- Tight sites welcome. No crane swing required; our crews are used to difficult access
- One accountable crew. Forming, rebar, pour, cure and strip stay in-house
- Openings where you need them. Stairs, skylights, chases placed during forming
- Code & engineer discipline. Shoring is designed, inspected and stripped on schedule
Insulated Slab Option
InsulDeck® — the slab that insulates itself
Our core suspended-slab method is conventional, reusable formwork — stripped and gone when the slab is cured. But when the design wants an insulated elevated assembly — an addition floor over a garage, a walk-out deck, or a low-rise roof deck — we also install InsulDeck®, an insulated concrete form system for floors, roofs and elevated slabs that stays in place after the pour as insulation, utility chase space and finish backing.
- No stripping, minimal shoring — the manufacturer describes a lightweight, self-supporting joist-and-deck system that eliminates form removal and much of the shoring and mass
- Insulated & quiet — the forming system becomes the insulation, so the slab performs like an ICF wall: energy-efficient, comfortable, and radiant-heating friendly
- Built-in details — utility chases and steel furring strips are part of the system, speeding up the trades that follow
- Design flexibility — manufacturer-cited clear spans up to roughly 33 ft for typical residential loads, with R-value and joist depth varied to project requirements
- Same crew, same QA — we install manufacturer-approved assemblies with our engineer review, pour monitoring and documentation standard
System details above are from the InsulDeck® manufacturer’s site. Ontario availability and engineered assemblies are confirmed for each project before quoting.
Scope
What counts as a suspended slab for us
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Elevated Floors & Roof Decks
Mezzanine slabs, garage roofs you can walk on, amenity decks and low-rise commercial floors poured in place with the right camber and drainage falls.
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Balconies & Walk-Out Decks
Cantilevered and supported balconies and deck slabs — see our dedicated concrete decks page for outdoor-living versions.
Concrete Decks →
The Engineering Side
Shoring is not guesswork
A suspended slab only works if the temporary structure under it is designed as carefully as the slab itself. Here’s what happens on every elevated pour:
1 · Engineer-designed shoring
A P.Eng. provides (or reviews) the shoring layout: member sizes, spacing, bracing and load paths for the fresh-concrete load. We build to that drawing — not to “what usually works”.
2 · Inspection hold points
Formwork and rebar are inspected before concrete arrives. Rebar mats, chairs, splices and embeds are photographed for the record.
3 · Controlled pour & cure
Slump tests, vibration, screeding to level, then a cure regime that follows the engineer’s schedule — never rushed.
4 · Strip on schedule
Shoring stays until the engineer’s stripping criteria are met. We manage the calendar so your trades aren’t held up — safely.
Flagship Project Type
Deck-over-garage slabs
Garage under, living space above — a classic Halton renovation. We form and shore the slab between the garage and the new floor, keep the garage usable through the pour, and hand over a slab that’s level, crack-controlled and ready for framing or finishes.
- Slab edge and thermal detailing between heated and unheated space
- Shoring designed around garage door clearance and access
- Control joints and reinforcing per the structural drawings
Who This Serves
Built for builders — trusted by engineers
General Contractors
Add a reliable structural-concrete subtrade with WSIB, insurance and a QA pack on every job. We quote fast and hold schedules.
Trade Program →Renovation Homeowners
Adding a second storey or a slab where nothing was? We take the structural worry off your plate — permits, engineer and pour handled.
Get a Quote →Architects & Engineers
Design-assist early: we flag forming, access and sequencing constraints while drawings can still change cheaply.
Engineer Coordination →