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 Barrhead
Quality Energy Efficient Double Glazed Windows & Doors




If you’ve spotted a temperature change in your home, or spotted your bills going up, or condensation appearing on or inside your windows in the morning, it’s worth taking notice.
If that sounds familiar, your windows are telling you something.
Older windows drop their seal over time.
Gas seeps out from between the panes. The rubber gaskets go rigid and contract. What used to hold back the cold now barely registers.
In Barrhead, where the rain and wind can seem more frequent than sunshine, ageing windows really change how warm and cosy your house feels.
No need to worry about it! The Advanced Group has been in the business for over 38 years. Whether you need new windows for just one room or every room of replacement windows and doors, we’ll match you with the right solution and get it all installed the right way.

The obvious ones jump out. Cracked glass, rotten timber frames, handles that don’t fasten properly.
But then there are the quieter signs. The ones you don’t notice until they’ve already been losing you money for months, perhaps years.

Moisture or fogging between the two sheets of glass? The sealed unit has failed.
The seal breaks. The argon gas escapes out. The window loses a major portion of its thermal efficiency.
Stop throwing money away on climbing heating costs. Bring back your home’s thermal efficiency with well sealed new windows.

On a windy day, place your hand near the edges of the window. If you can feel cold air getting through, this tells you the seals have deteriorated.
Draught proofing strips offer you time, but they’re a sticking plaster at most. The rubber keeps degrading, and the problem only worsens.

Windows that stick, won’t lock correctly, or refuse to budge are both a security risk and an insulation issue. Warped frames, worn hinges, failed mechanisms. The window has hit the end of its functional life.
Multi-point locking systems on today’s windows offer much better safety than the single-point catches fitted to older windows, and toughened glass choices provide an extra layer of safety.
Windows leak a large share of your home’s heat. They’re the barrier between you and the outside elements.
Double glazing from the past is exactly that, in the past. The energy ratings land significantly below modern standards, even if the original specification was solid when first installed.
Shield your property from high energy bills with new double glazed windows and doors.

Barrhead houses vary across all shapes and sizes, and the right window choice depends on your building, the room, and how you occupy it.
The Advanced Group provides a full choice of windows and doors in both double glazed and triple glazed options, including uPVC casement, sash, tilt and turn, and top hung styles.

Casement windows are quite possibly the most widely chosen window style in the UK. They’re side-hinged and open outwards, making them great for ventilation and easy to clean from inside.
Modern home or traditional property, casement windows suit the lot. A wide choice of colours and finishes is on offer, and the woodgrain effects capture the look of timber without any of the maintenance or warping fear.

Our sliding sash windows mirror the look of original wooden sash frames while offering modern thermal efficiency and protection.
Proportions, sight lines, and opening mechanism all follow the traditional design. Perfect for conservation areas or maintaining your property’s personality.

These windows provide two functions: tilting inward at the top for secure ventilation, and turning fully inward on a side hinge for easy cleaning.
Upper-floor flat? Cleaning outside glass from a ladder isn’t realistic. Tilt and turn windows fix that challenge straight away.
The tilt feature lets air in without the security worries of having the window wide open, which is particularly handy if you’ve got young children.
Hinged at the top, swinging outward from the bottom. Top hung windows provide you ventilation and help keep the rain out at the very same time.
You’ll spot top hung windows in bathrooms, kitchens, stairwells, and bay window setups, basically anywhere that privacy and airflow are both important.

French windows work just like French doors but are full-length windows that open outward.
In pairs, they look fantastic, and you can match them with sidelights to fill a wide opening with glass and lots of natural light.
uPVC frame materials. That’s what The Advanced Group specialises in, and the reasons are solid.
Scottish weather throws all sorts at your windows. uPVC is made to withstand it, durable, resistant to rough, windy, wet conditions, and without the warping or rot concerns that affect timber frames.
In addition, uPVC delivers the benefit of being low maintenance.
Wipe it down with soapy water. Done. Looks good as new.
The main benefit? Energy performance. Our uPVC windows are built with multi-chambered uPVC, and some frames hit a U-value as low as 0.8 W/m2K. That restores real energy performance to your property.
Better of all? uPVC double glazing is the most affordable option.
That means you can often go for premium-grade glazing without stretching the budget. We also provide glazed uPVC doors, including uPVC doors, composite doors, and patio doors to complement.
Scotland is cold, wet, and windy for a good chunk of the year.
In such a climate, the energy efficiency of your windows has a real impact on your heating spend and the overall cosiness of your house day to day.
The thermal performance of a window is measured by its U-value.
A lower value means less heat escaping through the glass and frame. Right now, Scottish building regulations demand a maximum U-value of 1.6 W/m2K for replacement windows.
Our standard double glazed windows sit at 1.2 W/m2K, and the premium range can achieve as low as 0.8 W/m2K. That’s double glazing and triple glazing working at twice the level of the regulatory minimum.
The result? It lands on your energy statements.
A-rated energy-efficient windows and doors with argon gas filled sealed units and low-E glass coatings are brilliant at bouncing heat back into the room while still letting lots of light through.
If you’re replacing old single-glazed sash windows or 1990s double glazing, you could see a real drop in your heating costs within the first winter.
There are plenty of double glazing companies in Barrhead offering basic products, but not many can rival the quality of what we install.

Our trusted installers often get asked about our triple glazing products.
An extra pane of glass makes triple glazing apart. It delivers enhanced insulation and greater noise dampening over standard double glazing.
If your property is sitting in an exposed spot, up a hill, facing north, or near a busy road or under a flight path, get in touch! The Advanced Group would be more than happy to guide you through the upsides of triple glazing.

We understand that new windows represent a significant investment, and paying for them in full all at once isn’t always realistic.
That’s why we provide 0% APR and up to 4 years of interest free credit, to make the purchase much easier!
This enables you to install the windows you want while spreading the cost of your new windows and doors in a way that works for your circumstances.
38 Years and Counting
Installing double glazing across Scotland since 1988. That’s our track record.
Over the course of 38 years, we have refined what lasts best, built lasting relationships with partners, and trained window fitters who take great care in their work. That experience is visible in every job we deliver.
15 Years of Peace of Mind
A 15-year guarantee on every installation. Product and workmanship, both covered. That’s the commitment.
Our guarantee beats industry standard. We’re fully certain in our windows and our installers.
Something goes wrong? We sort it straight. Simple as that.

Scotland’s leading provider of energy-efficient double glazing, that’s us. And the choice of designs, frames, colours, and finishes we stock? Unrivalled.
Visit our showroom. We’ll talk you through the full range personally.
If you are thinking about installing new windows or doors in your Barrhead house, The Advanced Group would be more than glad to assist.
Whatever your window and door requirements may be, we will arrange a home survey at a time that suits you, carry out accurate measurements, talk through your choices, and provide a written quote with no obligation and no pressure.
Like to see our selection in person before committing? Our showroom doors is open, come in any time.
Reach out to our friendly team today for your free quote or home survey.
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