Double Glazing

According the Energy saving trust fitting new energy efficient doors can save the average household between £10 & £50 a year on their energy bills. According to building regulation control body, every door must be fitted with integrated insulation to help minimise heat loss and achieve greater energy efficiency as well as comply with the regulations.

The Benefits of Energy-Efficient Doors

Noise Reduce

if you suffer from excess noise in your home, the addition of a double glazed door is designed to combat the impact of outside noise allowing you to enjoy peace and quite within your home.


Double glazed doors are designed to provide a better solution to reduce heat loss. With the addition of energy efficient glazing, doors are designed to minimise heat loss and drafts in your home.


By investing in new windows and doors, you could increase the value of your home. This could potentially increase your chances of selling your home as most people look for double glazing as a factor when buying a property.


If home security is your main priority, doors features a multi-point locking system which is designed to create a tight seal around the whole door. The added advantage of a new door is that it will form an extra layer of protection. Old windows and doors are easily breakable and not very secure. Very often, the glazing used in modern doors is impossible to remove from the outside providing greater peace of mind.

Composite Energy Efficient Door Doors are available in a wide range of styles and colours

Types of Doors

Whether you want to make a long lasting impression or bring the outside in, there is a choice of styles to choose from including:

  • Entrance Doors

  • French Doors

  • Patio Doors

  • Bi fold Doors

Door Materials

All doors are available in a choice of materials including:

  • uPVC doors are long lasting, energy efficient and requires virtually no maintenance.

  • Timber doors are elegant in design and offer outstanding thermal performance. They can also enhance the look of your property and add value to your home for years to come.

  • Composite doors have an inner timber frame covered with aluminium which makes it extremely hardwearing, energy efficient and long lasting

  • Aluminium is a strong and versatile material that is resistant to weathering and corrosion.

Consumer Benefits

When you enter into a contract with a member of DGCOS to install glazing products at your home in England, Scotland, Wales or the Isle of Wight, you should receive the following.

  • Consumer advice line 
    We are on hand to answer any questions you may have once you have entered into a contract with a scheme member.
  • Deposit and stage-payment protection insurance
    This covers up to 25% of the contract value (maximum limit of £5,000) for 120 days, once your installation is registered with us.
  • Insurance-backed guarantee (IBG)
    An IBG provides protection if your installer ceases (stops) trading and cannot honour the terms of their written guarantee. You will receive an IBG once the member has added in a date on our system to show when they completed your installation.
  • Alternative dispute resolution 
    Our expert mediators are always on hand to help resolve any disputes you may have with one of our members.
  • Access to an ombudsman 
    You will have free access to an ombudsman if we cannot settle your complaint.

Please read the consumer advice section to understand the protection you may receive and the obligations you have. Click here to visit the consumer advice section.

Recent Installations of Double Glazed Doors
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