Insulation

The Home Energy Upgrades Program offers competitive pricing and warranties for Fletcher Glasswool and Polyester Solutions insulation. See below for further details.

Fletcher Glasswool and Polyester Solutions

Bulk insulation is effective at keeping homes warm in winter and cool in summer. All bulk insulation products are made of majority recycled product in Australia.

Glasswool insulation is an effective and affordable option. Polyester insulation is particularly good for people who want a low-allergenic product.

Refer to the table below for the products available and pricing.

Bayside insulation pricing table
Type	Material	Brand	R-Value	Bayside price per Sq M* (supply and install)
Ceiling	Glasswool	Fletchers	R2.5	$15.80
Ceiling	Glasswool	Fletchers	R3.5	$17.66
Ceiling	Glasswool	Fletchers	R4.1	$19.48
Ceiling	Glasswool	Fletchers	R5.0	$23.36
Ceiling	Glasswool	Fletchers	R6.0	$25.92
Ceiling	Polyester	Polyester Solutions	R2.5	$17.35
Ceiling	Polyester	Polyester Solutions	R3.5	$22.03
Ceiling	Polyester	Polyester Solutions	R4.0	$26.88
Underfloor	Polyester	Polyester Solutions	R2.5	$31.73
Walls	Blow in Glasswool	Knauf	R2.3+	$53.07

All prices in the table include GST.

Products are supplied and installed by Enviroflex.

Insulation R-value: The R value is a measure of a material’s resistance to heat flow. The higher the R value, the greater the insulating effect, resulting in improved thermal comfort. Enviroflex staff can visit your home and assess the existing amount of insulation. They can install in homes without insulation or top up existing insulation. To meet the minimum roof insulation requirements of the National Construction Code, batts are typically installed to achieve an R-value of R4.1. For the Greater Melbourne climate, it is considered better practice to install insulation to achieve an R-value of R5, where space and any other constraints permit.

As a guide to the area of ceiling to be insulated, your home’s floor plan document may include floor area (sq m).

* Bayside base price: The final cost of your installation will be provided in a free, no obligation quote. The final cost depends on your specific circumstances, such as an electrical inspection and/or removal of existing insulation where necessary.

Note that all insulation jobs through the program require a current Certificate of Electrical Safety. You may choose to have Enviroflex’s electrician provide the certificate (at a cost of $330 inc. GST) or arrange one through a suitably qualified electrician.

There are currently no Victorian Government rebates available for insulation. This is subject to change in 2026.

Enviroflex warehouse with company signage and three branded vehicles, including two trucks and a ute, parked in front.

Warranties

Glasswool ceiling insulation is guaranteed to last the lifetime of your home (a lifetime product warranty). Polyester ceiling and underfloor insulation come with 70-year warranties. Blow–in glasswool wall insulation has a 50-year warranty.

Why and how to best insulate?

Insulation is the most cost-effective way to increase your home’s energy efficiency, for both heating and cooling. According to Sustainability Victoria it can reduce your temperature control costs by 40-50%.

Generally, the best order to insulate your home is:

Ceiling
Walls
Floor

Heat loss diagram:

Simple house diagram showing heat loss percentages: 20% through ceilings, 20% through walls, and 5% through floors.

More information

Why upgrade?

How it works

Someone helping a person understand energy

Products, prices and rebates

Brick house with terracotta tiled roof fitted with rooftop solar panels, set against a bright blue sky.

Information sessions

Close-up of a meeting where a person is pointing to a scale model of a house with solar panels on the roof. Two other people sit across the table, and a digital tablet displaying floor plans is visible in the foreground.

Program partners

Electrician in high-visibility clothing and a safety helmet installing solar panels on a tiled residential roof under a clear blue sky, with trees and rooftops visible in the background.

Frequently asked questions

Need help?

If you have any questions about the products or pricing, or would like assistance to understand or compare quotes, please contact Yarra Energy Foundation on (03) 7037 6040.