
Replacing your windows and doors is one of the best investments you can make in your home. Not only can modern glazing improve energy efficiency and security, but it can also transform the appearance of your property and increase its value.
However, after more than 30 years installing windows and doors across Stevenage and Hertfordshire, we’ve learnt that choosing the right products is only part of the process.

It Starts With Understanding Your Home
One of the biggest misconceptions is that replacing windows is simply a case of removing the old ones and fitting new ones.
In reality, we spend far more time assessing the property than many people realise.
During every survey we carefully inspect:
- The condition of your existing frames
- Brickwork around each opening
- Signs of movement or damp
- Lintel condition
- Existing insulation
- Ventilation requirements
- Access for installation
This allows us to recommend the right solution for your property rather than simply the most expensive option.
There are many occasions where we advise customers that only certain windows require replacement, helping them save money while still achieving excellent performance.
Choosing the Right Window Material
One of the first questions homeowners ask is whether they should choose uPVC or aluminium.
The answer depends on your property, your budget and the appearance you’re trying to achieve.
uPVC Windows
For many Stevenage homes, modern uPVC windows remain the most popular choice.
They offer:
- Excellent thermal efficiency
- Low maintenance
- Long lifespan
- Wide choice of colours
- Outstanding value for money
Modern uPVC has come a long way over the last twenty years and now offers slimmer profiles and improved energy performance compared with older systems.
If you’re replacing ageing windows, our Replacement Windows service offers a range of high-quality uPVC and aluminium options to suit every style of property.
Aluminium Windows
Aluminium has become increasingly popular, particularly for homeowners renovating or extending their properties.
Benefits include:
- Slim sightlines
- Larger areas of glass
- Contemporary appearance
- Exceptional strength
- Durable powder-coated finishes
For homes with large openings or modern extensions, aluminium often provides the perfect balance between style and performance.
Don’t Overlook Your Doors
Your front door is often the first thing visitors notice.
It’s also one of the hardest working parts of your home.
A modern replacement door doesn’t just improve kerb appeal.
It can also provide:
- Better insulation
- Improved security
- Reduced draughts
- Lower maintenance
- Greater peace of mind
Whether you’re considering a composite front door, French doors or bifold doors opening onto the garden, choosing the right product makes a noticeable difference to both comfort and appearance.
What We Commonly Find During Surveys
After thousands of installations, certain problems appear again and again.
Failed Double Glazing
Misted glass is one of the most common reasons homeowners contact us.
Many people assume the entire window has failed.
In reality, it’s often just the sealed unit.
Depending on the age and condition of the frame, replacing the glazing may be possible without replacing the whole window.
Poor Previous Installations
Not every problem is caused by age.
We’ve replaced many windows that were simply installed incorrectly.
Common issues include:
- Frames fitted out of square
- Poor weather sealing
- Gaps around the frame
- Incorrect packers
- Insufficient insulation
These problems often lead to draughts, water ingress and windows that become difficult to open over time.
Structural Movement
Some older properties naturally experience slight settlement over the years.
We occasionally discover:
- Cracked brickwork
- Movement above lintels
- Uneven openings
- Deteriorating timber
These issues should always be addressed before new windows are fitted to ensure the installation performs properly for years to come.
Improving Energy Efficiency
One of the biggest benefits of replacing older windows is improved energy efficiency.
Modern glazing incorporates technology that simply wasn’t available twenty years ago.
This includes:
- Low-E glass
- Argon gas filled sealed units
- Warm edge spacer bars
- Multi-chamber frames
Together these features help retain heat inside your home during winter while reducing solar gain during the summer months.
Many customers comment that the improvement in comfort is noticeable almost immediately.
Security Has Improved Significantly
Security standards have advanced considerably over recent years.
Modern windows and doors now include features such as:
- Multipoint locking systems
- Reinforced frames
- Internal glazing beads
- Laminated safety glass where required
- High-security cylinders
For families, these improvements provide reassurance while also helping protect one of their biggest investments.
The Installation Process
People are often surprised by how straightforward a professional installation can be.
A typical project follows these steps:
Initial Survey
We assess your property, discuss your requirements and answer any questions.
Detailed Quotation
Every quotation clearly explains what’s included so there are no surprises.
Manufacturing
Your windows and doors are manufactured to your property’s exact measurements.
Installation
Our experienced installers carefully remove the existing frames before fitting the new products, ensuring everything is square, level and fully sealed.
Finishing
Internal trims, sealants and final adjustments are completed before the installation is thoroughly checked.
Finally, your FENSA certificate is issued, confirming the installation complies with current Building Regulations.
