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 Lenzie
Quality Energy Efficient Double Glazed Windows & Doors




Maybe you’ve picked up on a shift in temperature around your home. Heating costs climbing. Or condensation sitting on or inside your windows every morning.
That familiar feeling? It’s your windows signalling to you something.
Over time, older windows begin to lose their seal.
The gas between the panes gradually escapes, the rubber gaskets go rigid and pull back, and what used to held the cold out now barely holds it back.
Lenzie has its fair share of rain and wind, often more than sunshine. When your windows are worn, you feel the difference in how warm and cosy your home stays.
No need to panic about it! The Advanced Group has been doing this for over 38 years. Whether you want new windows for just one room or the whole house of replacement windows and doors, we’ll match you with the right choice and get it all installed the right way.

Some issues are straightforward, such as cracked glass, rotten timber frames, and handles that don’t close correctly.
Other signs, though, are less obvious, and by the time you spot, they may have been costing you money for months or even years.

Can you spot moisture or fogging trapped between the two sheets of glass? That tells you the sealed unit has given way.
The seal breaks. The argon gas escapes out. The window loses a large chunk of its thermal effectiveness.
Don’t let increasing heating bills eat into your budget. Recover your home’s thermal performance by installing perfectly sealed new windows.

On a windy day, put your hand near the edges of the window. If you can feel cold air coming through, this tells you the seals have worn away.
Draught proofing strips can help temporarily, but they’re really a sticking plaster on a fault that’ll only worsen as the rubber continues to breaking down.

Windows that stick, won’t close right, or refuse to budge are both a safety risk and an insulation concern. Warped frames, worn hinges, failed mechanisms. The window has come to the end of its useful life.
Modern windows come with multi-point locking systems that are far ahead of the single-point catches on older windows. Throw in toughened glass, and you’ve got properly improved protection.
Windows contribute to a large amount of heat loss in any property. It is the barrier between you and the outside weather.
Your old double glazing? It’s outdated! The energy ratings are far below what’s achievable today, even if the original specification was solid at the time.
New double glazed windows and doors will shield your home from high energy bills.

The right window type for your Lenzie property will depend on the property itself, the room in question, and how you occupy it.
The Advanced Group provides a full choice of windows and doors in both double glazed and triple glazed specifications, including uPVC casement, sash, tilt and turn, and top hung designs.

Quite likely the most popular window type in the UK, casement windows are side-hinged and open outwards, which makes them practical for ventilation and easy to clean from inside.
Casement windows suit most property styles, from modern builds to traditional villas, and are available in a wide range of colours and finishes, including woodgrain effects that replicate the look of timber without the maintenance and risk of warping.

Want the look of original wooden sash frames? Our sliding sash windows recreate that classic style while providing modern thermal performance and protection.
Proportions, sight lines, and opening mechanism all follow the traditional look. Great for conservation areas or preserving 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 simple cleaning.
They’re a common choice for upper-floor flats where cleaning the outside of the glass from a ladder isn’t feasible.
The tilt feature offers you airflow without the security concerns of a fully open window, which is especially helpful for families with young children.
Top hung windows are hinged at the top and open outward from the bottom, making them a smart choice for ventilation while working to keep rain out.
You’ll see top hung windows in bathrooms, kitchens, stairwells, and bay window configurations, basically anywhere that privacy and airflow are both a priority.

French windows work just like French doors but are full-length windows that open outward.
They work well in pairs and can be paired with sidelights to open up a wide opening with glass and natural light.
The Advanced Group specialises in uPVC frame materials, and for some genuinely good reasons!
Scottish weather is unforgiving, and uPVC is designed to be long-lasting and tough to rough, windy, and wet weather. Unlike timber frames, uPVC won’t have the same warping or rot concerns.
Low maintenance is baked in as standard with uPVC.
Wipe it down with soapy water. Job done. It looks good as new.
Perhaps most significantly, our uPVC windows offer impressive levels of energy efficiency. Built with multi-chambered uPVC, some of our frames reach a U-value as low as 0.8 W/m2K, helping to recover energy efficiency in your home.
The cherry on top? uPVC double glazing is the most cost-effective option going.
That means you can often upgrade to higher-specification glazing without busting the budget! We also stock glazed uPVC doors, including uPVC doors, composite doors, and patio doors to complement.
Let’s be honest, Scotland is cold, wet, and windy for a fair chunk of the year!
In that type of climate, the energy rating of your windows really influences how much you spend on heating and how warm your home feels every day.
The thermal performance of any window is measured by its U-value.
The lower that figure, the less heat is lost through your glass and frame. Scottish building regulations currently cap it at a maximum U-value of 1.6 W/m2K for replacement windows.
Our standard double glazed windows achieve 1.2 W/m2K, and our premium options can reach values as low as 0.8 W/m2K. That’s top-performing double glazing and triple glazing that operates twice as well as the regulatory minimum.
That difference is clearly visible on your energy bills.
A-rated energy-efficient windows and doors with argon gas filled sealed units and low-E glass coatings send heat back into the room while still allowing light through.
Switching from old single-glazed sash windows or 1990s double glazing? Expect a significant drop in heating costs within the first winter.
A number of double glazing firms in Lenzie sell standard products, but not many can compete with the standard of the windows and doors we supply.

We get asked about triple glazing all the time.
Triple glazing has an extra pane of glass, allowing it to offer improved insulation and improved noise reduction.
If your property is in an exposed location, at a high altitude, facing north, or close to a busy road or flight path, The Advanced Group would be more than glad to walk you through the advantages of triple glazing.

We understand that new windows are a notable purchase, and paying for them in full all at once isn’t always practical.
That’s why we provide 0% APR and up to 4 years of interest free credit.
It means you can get the windows you need by helping you spread the cost of your new windows and doors in a way that fits for you.
Over 38 Years in the Trade
We’ve been in the business since 1988!
That’s 38 years of learning what lasts, developing relationships with manufacturers, and training window fitters who take genuine care in their work. You can notice our experience on every job we complete.
15-Year Guarantee Included
Every window installation includes a 15-year guarantee that covers both the product and the workmanship, which is pretty reassuring!
Why is our guarantee higher what the competition provide? Because we’re completely confident in the quality of our windows and the expertise of our installers!
Should anything arise, you can rely on us to address it promptly.

Scotland’s premier supplier of energy-efficient double glazing. An outstanding choice of designs, frames, colours, and finishes.
Why not pop into our showroom? We’d be more than glad to individually guide you through our full collection!
If new windows or doors for your Lenzie home are on your list, The Advanced Group would be more than glad to get involved!
Whatever your window and door requirements are, we’ll set up a home survey at a time that works for you, get the measurements, talk through your possibilities, and give a written quote with no obligation and no pressure.
If you’d like to see our range 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, contact a member of our helpful team today.
Get a Quote
It only takes 30 seconds!
By clicking ‘Send Now’ I consent to the Advanced Group’s data policy and allow them to contact me with the information provided above.












