Instantly reduce heat loss by 50% with our Tool-Free Push-In Glazing

Suitable for all traditional or heritage sash windows in homes and workplaces

Tool-Free Installation: 🛠️

Our push-in secondary glazing requires no drilling or permanent fixings, making it the perfect non-invasive insulation for listed buildings and heritage homes across Aberdeen and North East Scotland.

Precision Airtight Seal: 🔒

Featuring our patent-pending flexible seal, each pane is custom-made at our Altens workshop to ensure a snug, airtight fit that instantly eliminates cold drafts.

Discreet & Lightweight: 🌿

Designed for those who want a nearly invisible solution, our 3mm acrylic panes provide a high-performance thermal barrier without affecting the look of your original windows. Independent tests by Energy House Labs, University of Salford demonstrate heat loss is reduced by 50%.

Sustainable Warmth for the North East: ❄️

Specifically engineered to handle the Scottish climate, our push-in system helps retain heat in traditional granite properties, significantly reducing your energy bills.

Easy to Maintain: 🧽

The flexible design allows you to easily “push in” or remove the panes for cleaning, providing a flexible alternative to permanent double glazing.

Frame Finishes

Push-In Panes are available in four frame finishes, shown below. Because each frame is individually coloured, you’ll see gentle natural variation in tone between panes — this is normal for a small-batch finished product and not a fault.

Available finishes:

Dark Chocolate
Warm Oak
Sage Grey
Soft White

We’re not able to offer exact colour matching to existing window frames or joinery at this time. If getting close to a specific shade matters for your property, we’d recommend requesting a physical swatch before ordering, rather than relying on screen colours, which vary between devices and lighting.

Want to see the finishes in person? Get in touch and we’ll post out a swatch sample.