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Double Glazing

  • 'A' rated energy saving
  • Increased window security
  • Reduced outside noise
  • Less risk of condensation
  • Increased home value

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Double glazing in Derby & Belfast

Emerald Home Improvements specialises in providing the very best in UPVC windows and double glazing across Derby and Belfast. As with all our products, our double glazed windows are manufactured to the highest standard.

Double glazing vs single glazing

Double glazed windows are far better than their single glazed counterpart in every aspect. A double glazed window has two panes of glass instead of one, which leaves a pocket of argon gas between them both. Single glazed windows easily allow heat to escape as there’s no argon gas to stop it, which causes your house to be colder. A single glazed window is also more prone to cracking or shattering as there’s not an extra pane of glass to strengthen the window.

Single glazed windows are also more prone to condensation, which can eventually lead to more serious issues for your house and health. In a modern world, there is no place for single glazed windows as they’re outdated in every way. You might argue that they’re cheaper than double glazed windows, but unlike double glazed windows, regular windows won’t save you money on your energy bills or add value to your home. If you have the choice, you should always opt for double glazing!

Why choose Emerald

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Over 10 years in the business

We are now into our second decade in the industry and are recognised as one of the leading home improvement companies in the midlands.

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We understand that our customer's highest priority is feeling safe and secure in their own home. That is why we manufacture all of our products with safety in mind.

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Energy Saving

All of our products not only look great, but save you money on your heating bills.

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10 Year Guarantee

We offer a 10-year insurance backed guarantee on all work we carry out.

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Finance Options

We offer a range of flexible payment options.

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Made In Britain

All of our products are manufactured within the UK and conform to British safety standards.

Read these reviews and more on our Derby Google reviews page, our Northern Ireland Google reviews page and our Thomson Local logo page.

We cover the Midlands and Northern Ireland
With headquarters in Derby as well as offices in Belfast, we are ideally situated for all of your home improvements needs.

Our Accreditations

When you buy an Emerald product you can rest assured that you are in the safest of hands. We are a member of FENSA, Trust Mark, The Guild of Master Craftsmen, the PWF (Plastics Window Federation) and many more. Being part of these initiatives ensures that Emerald operate to the strictest industry standards and that no corners are cut.

FENSA Guild of Master Craftsmen Plastics Window Federation Secured By Design Trust Mark
BSI BFRC Duraflex Pilkington

Ultion Locks

All of our doors come fitted with Ultion locks, which use cutting edge technology to provide maximum security for your home. Ultion has passed all major British standards test for security, Ultion meets the highest TS007 standard (3 star) without needing to be bolstered with support of cylinder protectors or extra secure door handles.

Your door may look great, feel solid, and have a great multi-point lock, but what’s the point if it can be disabled in a few seconds via an inadequate cylinder lock? Discover why Ultion is different.