Double Glazed Windows
When choosing double glazing for your new windows and doors, it's important to consider key features that impact energy efficiency, comfort, and long-term performance.
Saving Energy With Double Glazed Windows
Double glazing has improved dramatically and led to the development of highly energy efficient windows and doors, that perform exceptionally well in all seasons.
Choosing double glazed windows improves the comfort of your home by reducing heat loss in winter and limiting heat gain in summer. This not only helps lower your energy bills but also creates a more consistent indoor temperature throughout the year.
Double glazing also provides better sound insulation, making it a great choice for homes in busy or built-up areas.
Window Frame Material
When selecting new windows, it’s essential to consider the frame material, not just the glass. Heat can escape through the frame, so selecting the right material helps improve your home’s energy efficiency.
Timber
Timber is a natural insulator and performs very well in terms of energy efficiency. Carlson’s high-quality Timber double glazed windows allow minimal heat loss and offer excellent long-term performance.
However, not all timber frames are made equally. Lower quality wooden frames can swell or shrink when exposed to moisture or sunlight, so it’s best to avoid cheaper options that may not last.
Aluclad
Aluclad windows and doors offer the perfect blend of natural warmth and durable protection. They feature solid timber on the inside for insulation and comfort, combined with a strong aluminium exterior that’s virtually maintenance-free.
This makes them an excellent choice for homes in exposed locations, coastal areas, or regions with heavy rainfall—where long-lasting weather resistance really matters.
Argon Gas between the Panes
When choosing energy-efficient double glazed windows, check that the space between the panes is filled with argon gas—not just air.
Argon is a much better insulator, conducting around 33% less heat than air, which helps reduce heat loss through the glass.
While some lower-cost windows use air between panes, Carlson’s double glazed units use argon-filled cavities to deliver superior thermal performance and long-term energy savings.
Low ‘E’ Glass Coating
For better insulation, choose double glazed windows with Low ‘E’ (Low Emissivity) glass.
This special glass is coated with a thin, invisible metallic layer that allows natural sunlight to pass through, while reflecting indoor heat back into the room—helping to reduce heat loss.
The Low ‘E’ coating is applied to the inside surface of the inner pane, keeping it protected and effective over time.
Warm Edge Spacer Bars
The panes of glass in any window must be held apart by a ‘spacer’ bar. Many manufacturers use metal or aluminium spacer bars.
However, as metal conducts heat, this transfers the heat from the inside of a building outside through the spacer bar.
In addition to the increased heat loss, the colder edge is more prone to condensation.
Carlson use the more innovative “Warm Edge Spacer Bar”.
Windows and uValues
A window’s U-value measures how well it insulates. The lower the U-value, the more energy-efficient the window is—meaning less heat escapes and your home stays warmer for longer.
At Carlson, we specialise in high-performance, energy-efficient windows, and our U-values are continually improving through ongoing research and development.
Contact us to learn more about U-values and how our windows can help reduce your energy costs.
What to Be Aware Of
No matter how many panes of glass a window has, it won’t perform well if it’s poorly constructed, improperly installed, or allows air leakage. These issues can significantly reduce energy efficiency.
At Carlson, our windows and doors are built to premium standards, which is why we confidently offer a 10-Year Warranty on all our products.
We also know that correct fitting and professional installation are just as important as the product itself—and we take both very seriously.
Find out more visit our showroom
Customer Service
At Carlson we are dedicated to providing you with the highest quality products and service. This commitment not only refers to the sale, fitting and delivery process of your custom doors & windows, but we also offer a comprehensive after sales service to include full 10 Year Product Warranty.
Meet The Team
Michael Dunne
Managing Director
Eamon Lawlor
Sales and Marketing Manager
Julie White
Financial Controller
Shaun Kerrigan
Project Manager
James Grogan
Sales Executive
Sandra Byrne
Logistics Coordinator
Louise Harnett
Office Administrator
James Short
Estimating and Surveying
Michelle Bayly
Account Assistant
Michael Farrell
Site Service Technician
Michael Foley
Project Manager
Suellen Ferreira
Site Service Coordinator
Renata Reji
Digital Marketing
Bruno Vaz
Project Manager
Claudia Maierkuk
Receptionist
Jacqueline Quinn
Project Manager
David Hayden
Sales Executive
Tomasz Wozniak
Site Service Technician
Louise Bermingham
Sales Executive
Nichola Larkin
Estimator
David Kearns
Sales Executive
Shane Forde
Project Manager
Showroom
Pricing & Ordering
Features & Benefits
Visit Our Showroom
Carlson has the expertise and experience to ensure your window and door project is completed with minimal disruption to your lifestyle.
When you are looking for windows and doors for a house, whether for a new build or replacement a visit to our extensive showroom is a must. There, one of our experienced staff can demonstrate our wide range of door and window styles and discuss your individual requirements.
Pricing & Ordering
If you have just started on your new project you will have many choices to make. One of the most fundamental is new windows and doors, which can have a big impact on your build.
Give yourself enough time to choose the style you want, obtain a quote and get your order in to avoid delaying your project.
Features & Benefits
We specialize in premium quality, energy efficient windows and doors with a 10 Year Product Warranty, low u-Values and excellent safety and security locking systems.
Learn more about these features.
