Double Glazed Units

Double glazed units are the most common and effective glazing solution for UK homes and commercial properties. Designed to improve thermal efficiency, reduce noise, and enhance security, double glazing is a key upgrade for comfort, performance, and long-term value.

What Are Double Glazed Units?

A double glazed unit (DGU) consists of two panes of glass separated by a sealed cavity filled with air or inert gas such as argon. This insulating gap significantly reduces heat transfer and external noise compared to single glazing.

Modern double glazed units are manufactured to precise standards, ensuring excellent performance, durability, and clarity.

Why Choose Double Glazed Units?

Improved Thermal Efficiency

Double glazed units help retain heat inside your property, reducing energy loss and lowering heating bills.

Reduced Noise Pollution

The insulating cavity between glass panes helps minimise external noise, creating a quieter indoor environment.

Enhanced Security

Double glazing is harder to break than single glazing and can be combined with toughened or laminated glass for added protection.uPVC windows come with advanced locking systems, internal beading, and toughened or laminated glass options, helping to keep your home secure and giving you peace of mind.

Reduced Condensation

Internal condensation is significantly reduced thanks to improved temperature regulation.

Comfort All Year Round

Double glazing keeps homes warmer in winter and cooler in summer.

Increased Property Value

Installing modern double glazed units improves efficiency ratings and overall appeal.

Types of Double Glazed Units

Standard Double Glazing
Two panes of clear float glass with an insulated cavity, suitable for most windows and doors.

Energy Efficient Double Glazing
Includes low-emissivity (Low-E) coatings and argon gas filling for enhanced insulation.

Acoustic Double Glazing
Designed with varying glass thicknesses to improve sound reduction.

Safety & Security Double Glazing
Uses toughened or laminated glass where safety or security is required.

Glass Options for Double Glazed Units

Double glazed units can be customised with a wide range of glass types, including:

Clear float glass
Low-E energy-efficient glass
Toughened safety glass
Laminated security glass
Obscure or patterned glass for privacy
Solar control glass

Spacer Bars & Warm Edge Technology

Modern double glazed units use warm edge spacer bars to reduce heat loss around the edges of the glass. These spacers also help minimise condensation and improve overall thermal performance.

Spacer bars are available in a range of colours to suit different window and door frames.

Double Glazed Units and UK Building Regulations

All double glazed units installed in the UK must comply with current building regulations for thermal efficiency and safety. Units should meet or exceed minimum U-value requirements, and safety glass must be used where required.

Professional installation by a FENSA or CERTASS registered installer ensures compliance and certification.

Choose the right glass for decoration and privacy

Digital Windows (UK) Ltd

4.9

Based on 34 reviews

review us on

Aqz

16:04 12 Jan 26

Fitted Start of may-23. Required a full house change for new double glazing, secondary glazing, 2 back doors and a composite front door arch. Digital windows ltd were amazing from start to finish. They came within 2 weeks to view the property for measurements and give advice on what we can/cannot do. I asked them lots of questions and they were happy to answer. The customer service is excellent. They were clear in the lead time and therefore I had booked them in advance. They put down protection and covering throughout and ensure the place is left tidy. They took good care in ensuring no unnecessary damage was done in the way they took care for taking out the old windows. They mitre cut properly whats needed in regards to trim and take attention to detail for the final quality and finish. They ensured the inside and outside had high quality finish. Going the extra mile in the mortar/cement finish to make it look better. The team are respectful and clearly have great experience and attention to detail for a high quality finish. I am a customer who hawk eyes all the works and notices the smallest of things (like a bubble in silicone), however this company gave me peace of mind. I would 100% go back and recommend to all to go here for windows and doors. Amazing company, great quality finish and great customer service. Great work by Hatim, Mustafa and the team, Thank you!

Paul Clark

17:28 08 Jun 25

We were recommended to Digital Windows and overall we were very pleased to have chosen them. They gave us a prompt, competitive quote for Aluminium windows which took about 7 weeks from paying the deposit to installation. The fitters were very professional and the job was done to a very high standard and I would definitely use them again.

Annand Samy

16:14 23 May 25

We had a break in with an attempted theft. This company responded immediately and fixed the broken widow. Great service. I highly recommend their services.

Jodie Coyle

18:00 17 Apr 25

Very pleased with the product and level of service of the fitters from Digital Windows. The fitters came prepared with dust sheets and cleaned up everything before they left for the day.
Would definitely recommend this company. .

Mike Greatwood

16:42 16 Jan 25

Hatim and the team were responsive, helpful,
communicative and went out of their way to check I was happy with each stage of the installation. The work was of a high standard and the attention to detail was clear to see. Site and doors were left spotless. Would happily recommend…

SURESH KHAKHAR

08:58 10 Dec 24

I ordered my double glazing for the whole house in late October and was told that will be ready to fit in 6-8 weeks and we had a call early December that they will start work and within 5 days work was completed and all rubbish cleared and no bother from the workers at all and also obliged to do bits xtra for us too.Definitely recommended the company as they have been established for many years

Aasya Mughal

20:36 01 Aug 24

Highly impressed with this professional company. From a prompt and skilled initial survey to the high quality finish. The door is of superior quality and the workmanship and installation process was excellent. As a customer, I was kept updated and asked all my preferences. It has now been in place for a few months and looks like it will last for many decades. Thank-you very much to the whole team!

Julia Zemour

05:32 29 Jun 23

Digital Windows have just fitted some black metal bifolding doors in my flat, with a catflap in one of the panels. I am delighted with the results, my doors have transformed my flat and they look stunning. They were so quick to install, and dispose of the old ones. The work is immaculate, and they were tidy too. I highly recommend this company .