Upgrade Your Glass. Keep Suitable Frames.

Upgrade old, misted or inefficient glazing with Pilkington energiKare™ energy-efficient glass — often without replacing suitable existing window frames. We arrange free home glazing surveys across a wide area of the UK.

Thermal comparison showing heat escaping through standard older glazing before, and less heat escaping after upgrading to Pilkington energiKare glazing

Diagram showing how energy-efficient glazing retains heat using Low-E glass, argon gas and a warm-edge spacer

Diagram explaining argon gas in double glazing and how lower U-values improve insulation

Request Your FREE Home Glazing Survey

Tell us what you’d like to improve and enter your postcode. We’ll call you shortly during opening hours to confirm survey availability in your area.

What would you like help with?

Approximate glazing age

Are you the homeowner?

Name

Telephone

Postcode

✓ Free and no obligation
✓ Honest advice on what your home actually needs
✓ We won’t recommend replacing suitable frames unnecessarily

By submitting this form, you agree that Energyglaze may contact you about your enquiry.

Trusted Products. Professionally Installed. Added Protection.

Pilkington energiKare™

Recognised energy-efficient glass

HIP Protection

10-year insurance-backed guarantee & deposit protection

Energyglaze customers receive the appropriate deposit protection and 10-year insurance-backed guarantee documentation and certificate through HIP, in line with our process.

HIP Dealer No. 002530

Learn more about your protection →

FENSA Approved Installer

Registration 44524

Why choose a FENSA Approved Installer? →

Recognised glass manufacturer

Diagram of Pilkington K Glass in a double-glazed unit

Energy-efficient coated glass

Self-cleaning glass

Pilkington energiKare™

Upgrade the Glass — Not Necessarily the Window

REQUEST MY FREE SURVEY

Misted or Failed Double Glazing?

You may not need new windows.

If the existing frames are suitable, we can replace the failed sealed glass units and upgrade the glazing without replacing the complete window.

✓ Replace failed sealed units
✓ Keep suitable frames
✓ Upgrade to Pilkington energiKare™ glass

REQUEST MY FREE SURVEY

Official Pilkington video

See How Pilkington Demonstrates Energy-Efficient Glazing

Energyglaze installs Pilkington energiKare™ — energy-efficient glazing designed to improve the thermal performance of your home.

✓ Helps reduce heat loss
✓ Improves thermal performance
✓ Trusted Pilkington glazing

CHECK IF MY WINDOWS CAN BE UPGRADED

How Your Free Home Glazing Survey Works

Request Your Free Survey

Fill in the short form or call 01274 790650. Enter your postcode so we can confirm survey availability in your area.

We Call & Arrange a Convenient Visit

We’ll call you shortly during opening hours to discuss what you’d like to improve and arrange a survey at a time that suits you.

We Inspect, Explain & Talk Through Your Options

Using specialist glazing diagnostic equipment, including glass-analysis and thermal temperature tools where appropriate, we assess your existing glazing and explain what we find before recommending any upgrade. We’ll tell you whether your frames can be kept, and if you decide you’d like to proceed, we can then provide the appropriate quotation and arrange installation.

REQUEST MY FREE SURVEY

What Our Customers Say

★★★★★

“Energyglaze Glass have been wonderful from the start. We have had the glass upgraded to Pilkington energy-efficient glass, and the house feels warmer already. Thank you!”

Leah B · Trustpilot

★★★★★

“We are beyond over the moon with the completion. They look great, just what we asked for. Fantastic communication and service from start to finish. Would highly recommend to friends and family.”

John Moore · Trustpilot

★★★★★

“Great service from start to finish. The team were professional, friendly, and fitted the windows to a high standard. Everything was left clean and tidy, and the results look great. Would definitely recommend.”

Kiran · Trustpilot

Helpful Advice for Your Windows

Short, official guides from FENSA.

FENSA guide

Condensation on the Outside?

External condensation can sometimes be a sign that energy-efficient glass is keeping heat inside your home.

Read the official FENSA guide →

FENSA guide

Condensation on the Inside?

Internal condensation usually relates to humidity, cold surfaces and ventilation in the home.

Read the official FENSA guide →

FENSA guide

Why Choose a FENSA Approved Installer?

FENSA approval is a recognised credential allowing installers to self-certify that applicable window and door work meets Building Regulations.

Read the official FENSA guide →

Frequently Asked Questions

Do I need to replace the whole window if the glass has misted?

Not always. Misting between the panes usually means the sealed glass unit has failed rather than the frame. If the frame is in good condition, replacing the sealed unit is often all that's needed.

Can you replace the glass and keep my existing frames?

Yes, where the frames are suitable. We check their condition during your free assessment and will tell you honestly whether they can be kept.

What causes double glazing to mist up?

Each sealed unit has a seal around its edge. Over time that seal can break down and let moisture in between the panes, which shows up as condensation or a cloudy haze.

Can older double glazing be upgraded?

Often, yes. If the frames are suitable, older sealed units can be replaced with new units made with Pilkington energiKare™ energy-efficient glass.

What happens during the free home glazing survey?

We visit at a convenient time, assess your existing glass and frames, and talk you through what we find and the options available. There's no charge and no obligation.

Is the survey free?

Yes. The home glazing survey is free, with no obligation to go ahead. If you decide you’d like to proceed afterwards, we’ll then provide a clear quotation.

Do you also replace complete windows and doors?

Yes. If your frames aren't suitable to keep, or you'd simply prefer new ones, we can also quote for complete replacement windows, doors, porches and conservatories.

Also Need New Windows, Doors or a Porch?

Glass replacement is our speciality, but we can also quote for complete installations.

Not Sure Whether Your Windows Need Replacing?

Let us take a look. We'll explain whether your existing frames are suitable and what options are available.

REQUEST MY FREE SURVEY

Upgrade Your Glass. Keep Suitable Frames.

Request Your FREE Home Glazing Survey

Trusted Products. Professionally Installed. Added Protection.

Upgrade the Glass — Not Necessarily the Window

Misted or Failed Double Glazing?

See How Pilkington Demonstrates Energy-Efficient Glazing

How Your Free Home Glazing Survey Works

Request Your Free Survey

We Call & Arrange a Convenient Visit

We Inspect, Explain & Talk Through Your Options

What Our Customers Say

Helpful Advice for Your Windows

Condensation on the Outside?

Condensation on the Inside?

Why Choose a FENSA Approved Installer?

Frequently Asked Questions

Also Need New Windows, Doors or a Porch?

Replacement windows

Composite & uPVC doors

Porches & conservatories

Not Sure Whether Your Windows Need Replacing?