We’ve installed thousands of windows over the last 34 years, take a look at what we have installed more recently.
Fitting Scotland Perfectly
New Windows Innerleithen
Quality Energy Efficient Double Glazed Windows & Doors




Perhaps you’ve spotted a change in temperature in your home. Bills rising. Or condensation forming on or inside your windows in the morning.
Ring a bell? Your windows are telling you a signal.
Over time, older windows begin to lose their seal.
The gas between the panes leaks out, the rubber gaskets stiffen and pull back, and what once blocked the cold now barely slows it down.
Innerleithen’s rain and wind can seem more frequent than the sun. Tired windows make a real difference to how warm and comfortable your property feels.
Not to worry. The Advanced Group offers over 38 years of trusted service. Single room or full house, replacement windows or doors, we’ll find the right option and fit everything properly.

Some faults are hard to miss. Cracked glass. Rotten timber frames. Handles that won’t lock correctly.
Some signs fly under the radar however, and by the time you pick up on them, they’ve been silently losing you money for months or even years.

Can you see moisture or fogging trapped between the two sheets of glass? That means the sealed unit has broken down.
Once the seal has broken, the argon gas that provides insulation leaks, and the window loses a substantial amount of its thermal efficiency.
Quit wasting money away on rising heating bills. Bring back your home’s thermal efficiency with perfectly sealed new windows.

Place your hand near the edges of the window on a windy day. If you can feel cold air coming through, the seals have worn.
Sure, draught proofing strips can help for a bit, but they’re just a sticking plaster. The problem only worsens as the rubber keeps perishing.

Windows that catch, won’t close properly, or refuse to budge are both a safety risk and an insulation problem. Warped frames, worn hinges, failed mechanisms. The window has reached the end of its functional life.
Modern windows come with multi-point locking systems that are miles ahead of the single-point catches on older windows. Add toughened glass, and you’ve got seriously improved safety.

Did you realise that windows cause a large share of heat loss in any home? They’re the bridge between your home and the outside world.
Double glazing from the past is just that, in the past. The energy ratings fall significantly below current standards, even if the original specification was decent at the time.
Shield your home from high energy bills with new double glazed windows and doors.

Every home in Innerleithen is different. The right window choice depends on the building, the room, and how you use it.
The Advanced Group delivers a full selection of windows and doors in both double glazed and triple glazed options, including uPVC casement, sash, tilt and turn, and top hung types.
The most widely fitted window type in the UK. Side-hinged, opening outwards. Practical for ventilation and simple to clean from inside.
They suit most styles of property, from modern houses to traditional properties, and are available in a wide range of colours and finishes. Woodgrain effects mimic the look of timber without the maintenance or fear of warping.

Our sliding sash windows are crafted to replicate the appearance of original wooden sash frames, while delivering modern standards of thermal efficiency and protection.
Every proportion, sight line, and opening mechanism mirrors the traditional design. Whether your property is in a conservation area or you simply want to maintain its personality, these windows deliver.
Tilt them inward at the top for safe ventilation. Turn them completely inward on a side hinge for easy cleaning. Two options, one window.
Upper-floor flat? Cleaning outside glass from a ladder isn’t feasible. Tilt and turn windows solve that issue straight away.
The tilt feature allows airflow without the security worries associated with a fully open window, which is particularly valuable for families with young children.
Top hung windows hinge at the top and open outward from the bottom. This makes them a smart choice for ventilation while working to hold rain out.
Bathrooms, kitchens, stairwells, bay window setups, anywhere privacy and airflow both count. That’s where top hung windows really shine.

Full-length windows that open outward like French doors. That’s what French windows deliver.
Paired together, they perform wonderfully and can be paired with sidelights to cover a wide opening with glass and natural light.

There are good reasons why The Advanced Group focuses in uPVC frame materials.
Scottish weather can be brutal, but uPVC withstands it all! It’s long-lasting, stands up to wind, rain, and the worst of it, and you won’t get the warping or rot problems that timber frames come with.
And there’s another benefit: uPVC is seriously low maintenance!
Just grab it a wipe with soapy water and it’ll look as good as new.
And here’s the genuinely important part: our uPVC windows are properly energy efficient! Designed with multi-chambered uPVC, some of our frames achieve a U-value as low as 0.8 W/m2K, which really works to bring back your home’s energy efficiency.
And you know the better part? uPVC double glazing is also the most affordable option available!
So you can often install higher-specification glazing and still stay within budget. We supply glazed uPVC doors too, including uPVC doors, composite doors, and patio doors to match.

For a large chunk of the year, Scotland’s climate is cold, wet, and windy.
With that weather, your windows’ energy efficiency genuinely affects your heating costs and how cosy your property feels daily.
The thermal efficiency of any window is measured by its U-value.
The lower that value, the less heat is lost through your glass and frame. Scottish building regulations currently require a maximum U-value of 1.6 W/m2K for replacement windows.
Our standard double glazed windows come in at 1.2 W/m2K, and the premium options can get down to as low as 0.8 W/m2K. That’s double glazing and triple glazing performing at twice the level of the regulatory minimum.
And where does that difference show up? Right on your energy costs!
Argon gas filled sealed units and low-E glass coatings do the real work in A-rated energy-efficient windows and doors. Heat gets bounced back in. Light still gets through.
If you’re coming from old single-glazed sash windows or early double glazing from the 1990s, you could see a genuinely clear drop in your heating costs within just the first winter!
Innerleithen has plenty of double glazing companies. Few rival the standard of our windows and doors.

Our experienced installers welcome chatting about triple glazing, and it’s a topic that arises frequently!
An extra pane of glass makes triple glazing apart. It means better insulation and improved noise control over standard double glazing.
Exposed area. Up a hill. Facing north. Near a busy road or under a flight path. If any of that fits like your property, The Advanced Group is on hand to guide you through the advantages of triple glazing.

We understand that new windows are a significant investment, and paying for them in full all at once isn’t always realistic.
To help with this, we have available 0% APR and up to 4 years of interest free credit.
It lets you get the windows you want and spread the cost of your new windows and doors in a way that fits comfortably for you!

Over 38 Years in the Trade
Since 1988, we have been installing double glazing throughout Scotland.
38 years teaches you a great deal. What performs. Which suppliers to work with. How to train fitters who take genuine pride in their work. And it comes through on every job we deliver.
15-Year Guarantee
Every window installation we carry out is supported by a 15-year guarantee, protecting both the product and the workmanship.
The reason our guarantee surpasses that of our competitors is our total confidence in the standard of our windows and the ability of our installers.
Should anything go wrong, you can count on us to resolve it without delay.
As Scotland’s top provider of energy-efficient double glazing products, we have an unrivalled selection of styles, frames, colours, and finishes.
Visit our showroom. We’ll guide you through the full collection personally.

Thinking about new windows or doors for your Innerleithen home? The Advanced Group would be more than willing to help.
Whatever your window and door requirements might be, we’ll set up a home survey at a time that suits you, get the measurements, go over your options, and give a written quote with no obligation and no pressure.
If you’d like to see our selection of windows and doors in person before you decide, you’re free to come along to our showroom.
For your free quote or home survey, get in touch with a member of our friendly team today.
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