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Service 04

Spray foam that seals the air leaks, not just the cavity.

Closed and open cell foam for exterior walls, soffits, parking structures and every awkward junction the drawings do not show. Air sealing is where the energy goes, so that is where we spend the time.

20+
Years of crew experience
700+
Projects delivered
100%
WSIB & fully insured
Hilton Garden Inn exterior, a hotel insulated with spray foam behind its cladding
Hilton Garden Inn
Closed-cell wall insulation · Ontario

What we install

Four scopes, one crew, one point of accountability.

01

Closed-cell exterior walls

Medium-density closed-cell foam for exterior walls and roof decks. High R per inch, and it acts as its own air and vapour control layer.

Closed cellVapour controlHigh R
02

Open-cell and interior work

Light-density open-cell foam where cost and sound matter more than vapour control, on interior partitions, demising walls and infill cavities.

Open cellAcousticInfill
03

Soffits, garages and slab edges

Exposed soffits, parking structure ceilings and slab edges, with thermal barrier coatings where the code requires them.

SoffitsParkingThermal barrier
04

Air sealing and detailing

Window perimeters, penetrations, top and bottom plates and slab-to-wall junctions sealed as a scope of their own, not as touch-up.

Air sealingPenetrationsPerimeters
Maple Build crew working from boom lifts on a commercial building envelope

The assembly

The envelope is only as good as its junctions.

Foam is easy on a flat wall and hard at the slab edge, the parapet and around every penetration. Those junctions get inspected and photographed before the wall is closed in.

01
Substrate and readiness

Surfaces checked dry, clean and at working temperature. Foam will not bond to frost, dust or wet sheathing, so we do not spray until it is right.

02
Masking and protection

Glazing, mechanical, finished surfaces and adjacent trades masked and protected. Overspray is far cheaper to prevent than to remove.

03
Set-up and test pass

Rig temperatures and ratios set, a test pass sprayed and checked for cure and adhesion before production spraying starts.

04
Lift application

Foam applied in controlled lifts to the specified thickness, each lift allowed to cure so the core sets properly instead of trapping heat.

05
Depth checks and trimming

Depth checked across each elevation, high spots trimmed flush where cladding or strapping has to land on it.

06
Junctions and hand-over

Slab edges, parapets and penetrations detailed, photographed, then walked with the consultant before the wall is covered.

Specifying

Closed-cell or open-cell foam?

Closed-cell spray foam

Medium-density foam with a closed cell structure. It insulates, air seals and controls vapour in one application, which is why it dominates exterior wall work.

Roughly R-6 per inch, so target R-values fit in a thinner wall
Acts as air barrier and vapour retarder in the same pass
Adds rigidity and resists incidental water
Higher material cost per board foot than open cell
Typical use
Exterior walls, roof decks, slab edges, garages
Vapour control
Yes, at code thickness
Good fit
Hotels, multi-residential, anywhere depth is tight

Spray Foam Insulation on site

Envelopes we sealed before the cladding went on.

Hilton Garden Inn
Hilton Garden Inn, Ontario

Closed-cell wall insulation ahead of the exterior finish.

Cobourg Creek Lofts
Cobourg Creek Lofts, Cobourg

Envelope insulation and air sealing on a multi-residential build.

Four Points by Sheraton
Four Points by Sheraton, Ontario

Wall and soffit foam with slab-edge detailing.

All projects→

Before you tender

Questions we get from owners and PMs.

If your question is not here, call and ask for the estimating desk. We will tell you what an honest scope looks like even if it is not ours to build.

Yes, within limits. Substrate and ambient temperature both matter, so we hoard and heat rather than spray onto a cold wall and hope it bonds.

Typically the same day for closed cell, once the foam has cured and the area has been ventilated. We schedule the spray so it does not stall the trades behind us.

Yes. Exposed foam in garages, soffits and service spaces gets the code-required thermal barrier coating as part of our scope, not as a separate contract.

We check depth across each elevation and hand over photos with depth readings, so the consultant is not taking the R-value on trust.

Next step

Send wall sections, get a spray foam scope back in two business days.

Wall sections, the energy report and an R-value target are enough to start. We will tell you where the assembly will leak heat before it is priced.