Walls that work
twice as hard.
Canterbury sits in Climate Zone 3 with roughly 2,100 heating degree days per year, nearly double Auckland's. That means your home needs to work almost twice as hard to stay warm. After the 2010/2011 earthquakes, many homes were repaired structurally but thermal performance was overlooked. If your home was repaired or relevelled but never insulated, you're paying far more than you need to on heating. Our wall insulation typically achieves R 3 to R 4.2 in a standard 90mm cavity, a massive improvement over the R 0.3 of an empty wall.
In the cavity by lunch,
warmer by tea.
A blown wall retrofit is a one-day job, not a renovation. Here's every step.
Thermal imaging inspection
We start by inspecting your wall cavities with a thermal imaging camera to check for obstructions like old wiring or diagonal bracing.
Small access holes
Small holes (about 15-25mm) are drilled through the exterior cladding at the top of each stud bay.
Blown fibre fill
A nozzle is inserted and CosyWall fibre is blown in, filling from the bottom up. We can feel when each cavity is full by the back-pressure on the hose.
Plug, sand, paint
Every hole is filled, sealed, sanded, and painted to match your cladding. Most visitors would never know we'd been there.