Quieter rooms.
Better reviews.
Magnetite retrofit double glazing seals your existing windows and doors to reduce outside noise by up to 70% and cut heat gain — fitted from inside the room, within your normal turnaround, with no work to the building facade.
Contact usReduction through existing windows, backed by independent NATA-approved acoustic testing.
Tighter sealing and added acrylic reduce air-conditioning load year-round.
Installed within your normal room turnaround — no disruption to operations.
Increase comfort for your guests
Guest comfort is one of the strongest drivers of hotel reviews and repeat bookings — and noise is consistently one of the most common guest complaints worldwide. Low performing windows are one of the greatest contributors of heat and noise travelling into a room.
Replacing the windows is expensive and disruptive. Our Magnetite Retrofit Double Glazing System improves the windows you already have by installing interior secondary glazing to reduce outside noise, improve thermal comfort and increase energy efficiency. All done during turnaround time.
Magnetite is discreetly custom-fitted around existing windows using a slim PVC sub-frame and magnetic seal to attach clear, optical-grade acrylic panels. The system provides an airtight seal with minimal aesthetic impact and can accommodate windows of various sizes and shapes.
The PVC frame creates an insulating air cavity that improves thermal and acoustic performance. Acrylic glazing offers excellent clarity and superior thermal efficiency, while the magnetic system allows easy access for cleaning, maintenance and ventilation when required.
Designed around how hotels actually operate
Works on any window type
Sliding windows are the most problematic — they never seal properly around the sash. Magnetite seals all the way around the system, closing the air paths that let noise and heat in.
No facade works, no scaffolding
Installed entirely from inside the room and invisible from outside. Fitting only certain floors or wings? Nobody on the street can tell.
Classic Shield — the hotel default
No sliding elements, so guests can't displace the panels. Facility management can lift a panel out in seconds for cleaning, then clip it straight back.
Hack-free installation
No hacking, no mess, no loss of room income. Typically completed within a room's housekeeping window.
Doors sealed too
Entrance and connecting doors can be treated as part of the same project, using slimline seals fitted without taking the door off its hinges.
Heat reduction built in
The acrylic panel and airtight seals reduce solar heat gain and stop draughts, easing air-conditioning load and cutting energy use by up to 13% per room.
The air cavity is what does the work
To measure performance it is important to look at the whole window, including the frames, seals and glazing. Magnetite combines airtight seals with the ability to maximise an air cavity and the flexibility to vary glazing thickness to suit.
CSIRO research by John Davy indicated an air cavity can effectively enhance sound insulation performance. Results show a wide air gap of 100–125mm will improve sound insulation by an average of 7 dB(A) more than windows with a narrow gap of 8–13mm.
The Weighted Sound Reduction Index (Rw) is a measure for sound insulation performance of a single building element such as windows. The higher the Rw rating, the better the sound insulation. Source: CSIRO research, John Davy.
Less heat through the window
When evaluating options to improve the thermal performance of your windows, three criteria matter.
| Glazing type | Cool % | Uw | SHGC |
|---|---|---|---|
| Single glazed 3mm clear glass* | — | 7.4 | 0.77 |
| Single glazed 3mm clear glass & 4.5mm Magnetite Heat Shield | 35% | 2.9 | 0.67 |
*WERS standard typical industry window
The U-Value drops from 7.4 to 2.9 — a 61% reduction in the heat moving through the window.
In hot climates the ideal window has a low SHGC to limit heat from the sun's direct rays, and a low U-Value to stop outside heat moving through the window and warming the conditioned air inside.
The Magnetite system stops the conduction and convection of heat better than glass windows, giving superior results for hot conditions. Combined with a solar film or tinting, performance improves further again.
Delivered in operating hotels
360 windows across 10 levels, rooms back in service the same day
In the heart of Darling Harbour, PARKROYAL faced continuous noise from highway traffic and the busy waterfront precinct. After a successful mock-up room and independent acoustic testing, Magnetite retrofitted 360 existing windows across 10 guest floors.
The installation used a 120mm air cavity. A staged rollout kept the hotel fully operational throughout, with rooms returned to service on the day of installation.
See the result before committing to a rollout
Before a hotel-wide project we recommend the installation of a mock-up room, so management can verify the acoustic and thermal improvement before committing.
Site assessment
We assess your windows and doors on site, then recommend the right specification for the building.
Mock-up room
One representative room is fitted so you can experience the difference directly. Recommended, but not a requirement.
Independent testing
Where required, an acoustic consultant can run calibrated before-and-after tests using a loudspeaker at approximately 100 dB(A) of pink noise.
Verified rollout
An Inspection & Test Procedure is applied to every room. Rooms return to service the same day.
Montrosa solutions that compound
Magnetite is our flagship product — but the window is only the first layer. Montrosa brings together three technologies that each reduce building energy demand at a different point in the system.
Magnetite
Cuts noise and heat at the facade, reducing the load before it ever reaches the air-conditioning system.
ContinewM®
Reduces electrostatic build-up for smoother airflow and cleaner air, so the compressor works less.
Retragreen
Real-time HVAC monitoring and automated fault detection, working with your existing building management system.
What hotel teams usually ask
The questions general managers, asset managers and facilities teams ask most often before deciding on a retrofit.
Start with a site assessment
Tell us about your property and the noise or heat problem. We'll assess the windows and recommend the right approach for the building.
Enquire about your property
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