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Product details

Description

Love your existing windows but wish they were double glazed?

ecoGlaze On Sash gives you the thermal and acoustic benefits of double glazing—without the cost or disruption of window replacement. Designed specifically for hinged windows like awning and casement styles and French doors, this elegant secondary glazing solution improves comfort, reduces noise, and saves on energy bills. 🌬️💡

ecoGlaze On Sash delivers a sleek, professional finish that blends beautifully into your home—while boosting its performance year-round. 🏡✨

Our ready-to-go kits include precision-moulded ecoGlaze frames fitted with magnetic strips — all you need to do is supply the acrylic panel. It's simple to install, completely removable, and works with your existing timber frames.

✅ Suitable for timber awning and casement windows up to 2400mm high and wide

✅ Suitable for standard hinged French timber doors

✅ Included the Fit and Finish kit for a beautiful finish.

Secondary glazing system fits your existing windows and doors

✅ Does not hinder window or door operation

✅ Acrylic panel can be removed for repainting - magnet technology

Architectural quality materials and finishes 🪟

No gases or toxic adhesives used in manufacture or installation

Australian designed and manufactured

Award-winning innovation, recognised by the Victorian Government 🏅

✅ Rigorously tested—delivers benefits comparable to full replacement double glazing

Exclusive to ecoMaster

Specification

On Sash Window - Timber Kit

Each Raw Timber moulding includes:

  • Raw Timber On Sash Moulding complete with A & B Magnet and Black Miniseal.
  • Black Miniseal to adhere to Sash (oversize for DIY cut)
 900mm X 700mm  2 x 955mm Long mouldings  2 x 755mm Long mouldings  1 x Brown Fit and Finish Kit
 900mm X 900mm  4 x 955mm Long mouldings 
1 x Brown Fit and Finish Kit
1400mm X 900mm 2 x 1455mm Long mouldings  2 x 955mm Long mouldings  1 x Brown Fit and Finish Kit
1400mm X 1400mm 4 x 1455mm Long mouldings 
1 x Brown Fit and Finish Kit
2000mm X 700mm 2 x 2055mm Long mouldings  2 x 755mm Long mouldings  1 x Brown Fit and Finish Kit
2000mm X 1400mm 2 x 2055mm Long mouldings  2 x 1455mm Long mouldings  1 x Brown Fit and Finish Kit
2300mm X 900mm 2 x 2355mm Long mouldings  2 x 955mm Long mouldings  1 x Brown Fit and Finish Kit
2300mm X 2000mm 2 x 2355mm Long mouldings  2 x 2055mm Long mouldings  1 x Brown Fit and Finish Kit

 

Each White Aluminium moulding includes:

  • White Aluminium On Sash Moulding complete with A & B Magnet and Black Miniseal.
  • Black Miniseal to adhere to Sash (oversize for DIY cut)
 900mm X 700mm  2 x 955mm Long mouldings  2 x 755mm Long mouldings  1 x White Fit and Finish Kit
 900mm X 900mm  4 x 955mm Long mouldings 
1 x White Fit and Finish Kit
1400mm X 900mm 2 x 1455mm Long mouldings  2 x 955mm Long mouldings  1 x White Fit and Finish Kit
1400mm X 1400mm 4 x 1455mm Long mouldings 
1 x White Fit and Finish Kit
2000mm X 700mm 2 x 2055mm Long mouldings  2 x 755mm Long mouldings  1 x White Fit and Finish Kit
2000mm X 1400mm 2 x 2055mm Long mouldings  2 x 1455mm Long mouldings  1 x White Fit and Finish Kit
2300mm X 900mm 2 x 2355mm Long mouldings  2 x 955mm Long mouldings  1 x White Fit and Finish Kit
2300mm X 2000mm 2 x 2355mm Long mouldings  2 x 2055mm Long mouldings  1 x White Fit and Finish Kit

 

How To Install

DIY ecoGlaze requires you to have good attention to detail and the ability to closely follow our step-by-step guide videos to achieve successful insulation.

There are 3 steps to installing ecoGlaze. Each step is detailed in a separate video. It is essential you watch all 3 videos before you begin your order in readiness to DIY install.

DIY On-Sash requires 1 x On Sash Fit and Finish Kit per panel of glass 

Step 1. Preparation

  1. Measuring the top and bottom of your Window. 
  2. Cutting the top and bottom mouldings to size 
  3. Cleaning the Window in Readiness for ecoGlaze 

Step 2. Installing the Mouldings

  1. Install the Mini Seal to the Perimeter
  2. Install the Bottom Moulding and Acrylic Supports
  3. Install Top Moulding
  4. Measure the side Mouldings 
  5. Cut the Side Mouldings
  6. Install the Left Hand Moulding 
  7. Install the Right Hand Moulding 
  8. Fit End Caps from the On-Sash Fit and Finish Kit to the Mouldings. We found this step is easiest when completed with steps 6 and 7

Step 3. Installing the Acrylic

  1. Remove Mouldings from window 
  2. Double Check the size 
  3. Remove liner from the Acrylic
  4. Put Acrylic in place and replace mouldings over the top to secure it in place.
Delivery

Q: Can I collect my order?
A: Yes, you can. Once your order is ready, we will send you a Ready for Pickup email with full collection details.  Please note: pickup is from Preston, Victoria — not Prestons, NSW.

Q: Why is courier delivery so expensive?
A: Because this is a long product, freight costs are higher than for standard parcel items. We know that is not the most exciting news of the day, and we are always working to keep delivery costs as fair and reasonable as possible.

Q: Why can’t I choose Australia Post?
A: This product is too long for Australia Post, so it needs to travel with a specialist courier that handles oversized items safely.

Q: When will my order be despatched?
A: Most orders are despatched within 2–3 business days

Q: Will I get tracking?
A: Yes. Once your order has been booked with the courier, you will receive a tracking number so you can keep an eye on its journey.  Please note: if your order includes multiple items, they may arrive in separate parcels at no extra shipping cost.

Q: When will my order arrive?
A: Your order will be delivered by a specialist courier for oversized goods. This is not an express service, so delivery times can vary depending on your location and the time of year.  Delays are more likely during busy periods such as winter, Christmas and end of financial year.

Q: Will my order be left if no one is home?
A: Yes. Standard courier deliveries are sent as Authority to Leave. That means if no one is home when the courier arrives, your parcel may be left at your address.  If that is not suitable, please contact us when placing your order so we can discuss other options.

Q: What if my order arrives damaged?
A:
Please open and inspect your order as soon as it arrives. If anything has been damaged in transit, let ecoMaster know immediately.  Damage claims must be lodged within 48 hours of delivery. After that window, we may not be able to submit a claim with the carrier.

Q: What if my order goes missing in transit?
A: If your order seems overdue, we will follow it up with the courier on your behalf. If it cannot be located, we will arrange a replacement.

Q: What if my order is stolen after delivery?
A: If your parcel is stolen after it has been delivered, please report the theft to the police.

Q: How can I reduce freight costs?
A: Oversized freight can be expensive, especially for items over 1.5 metres long. To help keep costs down, you may wish to:

  • Combine all long items into one order
  • Share freight costs with a neighbour
  • Collect your order from Preston, Victoria
  • Use a more central delivery address if you live in a regional or rural area

We know freight costs can be frustrating, especially outside metro areas, and we will always do our best to help you find the most practical option.

FAQ

Frequently asked questions

Q: What is DIY ecoGlaze On Sash? 
A: There are three different types of ecoGlaze, each designed for a specific type of window. DIY ecoGlaze On Sash is specifically for hinged or wind out windows and french doors. 
 

Q: Can I get the acrylic sheet directly from ecoMaster?
A: No. We tried to develop a cost-effective solution for shipping acrylic around the country. Unfortunately, the logistics of doing this across Australia made the option not economically viable for you. We concluded that the most cost-effective way for you to achieve the benefits of double glazing for the lowest possible cost, was for us to provide the DIY ecoGlaze On Sash Mouldings (either single mouldings or in 'Ready to Go' Sets and you source the acrylic locally. We have several acrylic suppliers who understand the ecoGlaze system and are very happy to work with you to achieve the final result. 
 

Q: OK. I will source acrylic myself. What do I need to ask for?
A: Ask for a 4.5mm thick clear acrylic sheet cut to size. Some brand names that your supplier may have include Plexiglas, Shinkolite and Perspex. Provided you ask for 4.5mm thick clear acrylic, they will all be suitable for secondary glazing. Plexiglass has a 30 year warranty while Shinkolite and Perspex have 10 year warranties.
 

Q: My neighbours can look straight into some of my windows. Can ecoGlaze help obscure the view but keep the light?
A: Yes it can! When purchasing your acrylic panel simply ask for “Pearl” coloured acrylic. This is similar to frosting on glass. It still allows most of the light in but obscures the view. You can use “Pearl” to obscure the lower parts of a double-hung window and leave the upper parts clear.
 

Q: I have Aluminium Sliding Windows. Can I ecoGlaze them?
A: No. We do not know of any DIY solution that will allow you to secondary glaze existing residential aluminium sliding windows and still allow them to open. We are developing a system that will be suitable for Aluminium sliding windows, to learn more about this, subscribe to https://www.ecomaster.com.au/ecobites

Q: Can I fit DIY ecoGlaze to the outside of my windows?
A: Technically, yes you can. But we do not recommend it and we do not warranty the components if they are installed outside. 
 

Q: I already have double glazing. Can I fit ecoGlaze as well so I get the benefits of Triple Glazing? 
A: Yes you can. To get the full benefit of Triple Glazing your home, it is important that the rest of your home is also up to the same standard of thermal and energy efficiency. That means, a very well-insulated roof, good quality underfloor insulation, wall insulation and most importantly, thorough draught proofing! If we can relate that to a clothing analogy; there is little overall benefit in wearing a really warm jacket, if you are wearing shorts and thongs.
 

Q: Will ecoGlaze stop condensation on my windows?
A:
ecoGlaze will significantly reduce condensation on the windows and doors in your home. Condensation occurs because of the build up of moisture in the air and condensing at the coldest point in your home - at the dew point. This is because your windows are normally the coldest element in your home. If there is a build up of condensation, simply remove the acrylic panel, dry the glass and the acrylic then reinstate the acrylic panel and the magnetic mouldings. 

If condensation is an ongoing issue, it would be necessary to determine the source of water vapour in the air and deal with it. Sources of water vapour include, but are not limited to: gas appliances (burning gas emits water vapour and carbon monoxide), drying clothes inside, bathroom exhaust fans that are not effectively removing moisture and some clothes dryers. Open plan showers are particularly problematic as the shower steam is not contained and escapes creating condensation issues for the bathroom as well as adjoining rooms. This is especially prevalent during winter when condensation issues can be at their peak.

At a glance

  • Seamless

  • Australian Made

  • ecoMaster Design & Manufacture since 2003

Before and After

What You'll Love

Money saving

Save on install AND energy bills

Magnetic

Suitable for DIY install

Sustainable materials

Designed and manufactured with sustainable materials

Long lasting

ecoGlaze won't wear or deform with time

Paintable

Can be stained or painted to best suit the colours of your home

Architectual design

Designed to seamlessly blend in

Additive system

No replacing or smashing old windows

Step by step instructions

Step by step videos to support your DIY install

Upgrade existing windows

Cuts down external noise, condensation, and draughts

Load video: ecoGlaze beautiful secondary glazing
What is ecoGlaze, and why is it a good alternative to double glazing?

ecoGlaze is a secondary glazing system that gives you many of the same benefits as double glazing—better insulation, reduced noise, improved comfort, and lower energy bills—without replacing your windows. It works by adding a clear acrylic panel to the inside of your existing window, creating an insulating air gap that helps keep your home warmer in winter and cooler in summer.

Do I have to replace my windows to use ecoGlaze?

Not at all! That’s the beauty of ecoGlaze. It works with your existing TIMBER windows—no need to rip anything out. It’s a much easier, more affordable way to get the benefits of double glazing without the cost or construction mess.

Will ecoGlaze change how my windows look?

Nope! ecoGlaze is designed to be discreet and neat. The acrylic panels are crystal clear and the frame options (timber or white aluminium mouldings) blend in beautifully. Once it’s installed, you’ll hardly notice it—apart from how much more comfortable your home feels.

Can I install ecoGlaze myself?

Yes! ecoGlaze is a DIY-friendly solution with clear instructions and step-by-step videos to guide you through the process. If you’re handy and confident with a measuring tape, it’s a satisfying weekend project.  If you could prefer for an ecoGlaze installer to install for you  please contact us for a referral to a trusted ecoGlaze technician in your area.

How do I know which ecoGlaze kit I need?

That depends on your window type! We have kits for fixed windows, sash/hinged windows, and even ready-to-go standard sizes. If you're unsure, our friendly team can help you pick the right kit for your window style.