For existing brick veneer homes in Newcastle, a pump-in product such as INSULBLOC® is usually the best option, because it fills the wall cavity from the roof space without removing plasterboard. Weatherboard and other timber-framed homes can be pump-filled through small holes in the internal plasterboard, which are patched afterwards. If walls are already open during a renovation, batts are also an option.
How Wall Insulation Works in Each Newcastle Home Type
A brick veneer wall has a timber frame on the inside, a single skin of brick on the outside and a cavity in between. We pump INSULBLOC® into that cavity from the roof space so it fills the wall from the top down. Under windows, where the cavity can’t be reached from above, a few bricks are removed and re-mortared so those sections are filled too.
INSULBLOC® is our own product, made in Australia from recycled polystyrene cut into small blocks. It was designed specifically for insulating existing walls, which used to mean removing linings or cladding.
Weatherboard homes are timber-framed, with cladding on the outside and plasterboard inside. Here, the wall cavities are filled through small core holes drilled in the plasterboard, then patched. Each section between the frame’s horizontal braces is filled separately so there are no empty gaps left.
Some older homes have lath and plaster walls, damp patches or wiring that needs checking first. We look at all of this at the free measure and quote, so you know which method suits your walls before any work starts.
Insulating the Walls of an Older Newcastle Home?
You can read more about wall insulation for Newcastle homes at 4 Seasons Home Insulation, or get in touch if you’d like us to check your walls.

