Ultra frame double black sliding door closed top right view

A versatile roof choice

Flat roofs are suitable for a wide range of extensions. They can be installed into conservatories, orangeries, and even garage conversions. Wherever you envisage your flat roof extension, at Global Windows, we can help you to choose the best solution for your home renovation project.

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Why add a roof lantern to your flat roof

We can use a versatile range of roof lanterns for flat roof projects. As the name suggests, a roof lantern will help to light up a glazed or brick built extension with a flood of natural light. Natural light from the sun is known to boost our mood and create a feeling of well-being. With a roof lantern from Global Windows, the benefits are more than aesthetic.

The versatility and superb functionality of roof lanterns has made them a hit with UK homeowners. Many people are now choosing them as the perfect conservatory roof replacement. Stylish in design, with excellent levels of thermal efficiency, it’s perhaps no surprise that their popularity has soared in recent years.

 

  • Materials
  • Energy Efficiency
  • Security
  • Features
  • Materials

    Materials

    A GRP flat roof, or fiberglass roof as it’s also known, is one of the most popular flat roofing solutions in the UK. GRP stands for Glass Reinforced Polyester, a composite material formed by strengthening plastic with fine fibres made of glass. We use a system called Topseal and we are trained installers of their product.

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    ultrasky white uPVC glass roof with a grey flat roof

    Energy Efficiency

    Energy Efficiency

    Energy efficiency is an important consideration for all homeowners. We all want to reduce our carbon footprint and help to protect the environment for future generations. There are many ways to do this, by regularly recycling and reducing our waste. You can also help by choosing the most energy efficient products for your home improvement projects.

    Our flat roofs offer an exceptional U-value of 0.15. They will help to create a warmer home and save you money on reduced heating bills.

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    White orangery with roof lantern of a flat black roof

    Security

    Security

    Home security is perhaps the most important factor when you want to improve your home. At Global Windows, we share your concerns which is why we never compromise on the safety and security of our products. The products we install undergo rigorous testing to ensure they meet the high security standards the industry demands.

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    Overview Roof Lanterns on a flat black roof

    Features

    Features

    At Global Windows, our products have a wealth of high quality features. When it comes to choosing the best windows, doors, and glazed extensions, you’ll be spoilt for choice. From glazing to frames, we offer an array of options on all our product range.

    • No hassle quick installation design
    • Suitable for all types of property
    • Can be used all year round
    • ‘A’ WER (Window Energy Rating) as standard
    • Bright and airy interior design
    • Excellent ventilation capacity
    • Excellent weather resistance
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    Ultra frame double black sliding door closed

    Enhance your property

    Designed to enhance any home

    Flat roofs are a stylish and attractive addition to any home extension. With the option to add large glazed sections, you’ll allow an abundance of natural light to flood into your home.

    Our flat roofs can be tailor made to meet your exact specifications. They are attractive and functional and will look great on both traditional and contemporary properties.

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    ultrasky interior open white uPVC sliding door
    White orangery with roof lantern of a flat black roof

    Your local home improvement specialist

    Why choose Global?

    When you want to improve your home, Global Windows are the company to call. Possibly the best way to build a company’s reputation is through positive customer reviews and recommendations. In an independent survey by the CPA, 98% of our customers rated us as an excellent company. We also have numerous positive customer testimonials and are accredited by respected third-party industry bodies. We are both a Which? approved trader and registered with Check a Trade.

    At Global Windows, all our installers are highly qualified and have a wealth of industry experience. In the unlikely event that you experience a problem, we will take full responsibility. We provide a 10-year guarantee on the majority of our products see our guarantee page for more details) and a 10-year insurance-backed guarantee through the CPA. This helps to give you, the customer, peace of mind that your investment is protected.

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    Frequently Asked Questions

    At Global Windows, we understand the importance of creating a comfortable and aesthetically pleasing environment for your home. We also understand that choosing the right home improvement is a big decision, which is why we’re happy to answer any questions you may have about our products and services. With our extensive range of products, expert advice and commitment to customer satisfaction, we strive to be your go-to destination for all your home improvement needs.

    How long does a flat roof extension typically last?

    The lifespan of a flat roof extension depends on various factors, including the quality of materials used, installation techniques, and regular maintenance. With proper care and maintenance, a well-constructed flat roof extension can last anywhere from 20 to 40 years or even longer.

    Are there any specific building regulations or permits required for flat roof extensions?

    Yes, building regulations and permits are typically required for flat roof extensions, just like any other home extension. Regulations vary by location, but generally cover aspects such as structural integrity, insulation, fire safety, and drainage. Speak to a member of our team today for more information.

    How much does a flat roof extension cost?

    The cost of a flat roof extension can vary widely depending on factors such as the size, materials used, complexity of the design, location, and labour costs. For a free, no-obligation quote, contact us today.

    Extension white Lantern Roof

    News & Advice

    For all the latest industry news and product developments, have a read of our regularly updated blog.

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    Award Winning Installers

    finalist
    installer awards winner 2020
    The star small business awards 2021 finalist
    NBCA national building and construction awards 2021 finalist
    2021 top 3 window fitters in sheffield three best rated
    G21 finalist
    G22 awards finalist
    glass and glazing products installer awards winner 2022

    Windows & Doors

    Brilliant company from all we’ve dealt with, right through to the fitters, to the follow-up emails making sure everything was ok. Having used you before and after having work done to my property, I thought you the only obvious choice to return. Was a little worried as I’d had insulated render fitted and was concerned about the removal and refitting into the same size opening, and the damage it would cause. No worries, it seems. Each to their own trade as they say, and I’m glad they managed it and left me in no doubt, another great job done. Many thanks to you all. And see you in 15 years again?

    Checkatrade

    Windows And Door

    After a fair few months of looking for a good window provider we can say we are one hundred percent happy with Global. They exceeded our expectations from start to finish. Michael with the quote, the lovely ladies from the office and Andy and Josh who fitted our seven windows and front door. Very professional, good quality, quick and efficient work. A pleasure to work with such a team. Our next step is the conservatory with Global. Thank you and well done to all.

    Florentina

    Which?

    Excellent Service

    My mum wanted to say thank you so much for the fantastic service Global windows have given her following her burglary. From start to finish they reassured her the replacement patio doors would be robust and fitted as quickly as possible to ensure the property was secured. On the day of fitting the fitters arrived promptly and installed the doors with no mess. The gentleman who organised this from Global (sorry she couldn’t remember his name) came out to check the doors and to see mum was happy with them brought her a beautiful bunch of flowers. Mum was over the moon. Thank you so much.

    Margaret

    Which?

    Doors And Windows

    We decided to re-use this Company despite moving house and County. Global were helpful and very professional at all stages of the installation. We found all their staff friendly and knowledgeable. Dates given, returning phone calls etc. were all met. The price was very competitive, the quality of their products was excellent with a good range of colours and styles. The fitters were very hardworking, managed to get the work done in one day rather than the expected 2, mainly due to the fact they worked as a team, didn’t take breaks and clearly knew their job. Great company.

    Which?

    Replace All Windows And Doors

    Fantastic work from start to finish. Great suggestions made to my own thoughts. The date agreed happened and I was kept fully informed of progress before installation. The fitters were courteous and efficient and worked hard completing on time. I am happy to recommend Global windows to anyone.”

    Checkatrade

    Replace Lots Of Windows In 4 Bays Along With Others Throughout House. New Door Fitted Also.

    Excellent communication and attention to details. Windows were fine quality. Workmanship of highest quality and very considerate and careful. Would recommend to anyone.”

    Checkatrade

    Approved & Accredited by

    which? trusted trader
    Checkatrade where reputation matters
    best business of 2022 threebest rated
    Trustmark government endorsed quality
    Planitherm installer network
    CPA consumer protection association
    Certass
    sheffield chamber of commerce

    Testimonials

    Our customers’ feedback is important to us. Read our latest customer testimonials below.

    Windows & Doors

    Brilliant company from all we’ve dealt with, right through to the fitters, to the follow-up emails making sure everything was ok. Having used you before and after having work done to my property, I thought you the only obvious choice to return. Was a little worried as I’d had insulated render fitted and was concerned about the removal and refitting into the same size opening, and the damage it would cause. No worries, it seems. Each to their own trade as they say, and I’m glad they managed it and left me in no doubt, another great job done. Many thanks to you all. And see you in 15 years again?

    Checkatrade

    Windows And Door

    After a fair few months of looking for a good window provider we can say we are one hundred percent happy with Global. They exceeded our expectations from start to finish. Michael with the quote, the lovely ladies from the office and Andy and Josh who fitted our seven windows and front door. Very professional, good quality, quick and efficient work. A pleasure to work with such a team. Our next step is the conservatory with Global. Thank you and well done to all.

    Florentina

    Which?

    Excellent Service

    My mum wanted to say thank you so much for the fantastic service Global windows have given her following her burglary. From start to finish they reassured her the replacement patio doors would be robust and fitted as quickly as possible to ensure the property was secured. On the day of fitting the fitters arrived promptly and installed the doors with no mess. The gentleman who organised this from Global (sorry she couldn’t remember his name) came out to check the doors and to see mum was happy with them brought her a beautiful bunch of flowers. Mum was over the moon. Thank you so much.

    Margaret

    Which?

    Doors And Windows

    We decided to re-use this Company despite moving house and County. Global were helpful and very professional at all stages of the installation. We found all their staff friendly and knowledgeable. Dates given, returning phone calls etc. were all met. The price was very competitive, the quality of their products was excellent with a good range of colours and styles. The fitters were very hardworking, managed to get the work done in one day rather than the expected 2, mainly due to the fact they worked as a team, didn’t take breaks and clearly knew their job. Great company.

    Which?

    Replace All Windows And Doors

    Fantastic work from start to finish. Great suggestions made to my own thoughts. The date agreed happened and I was kept fully informed of progress before installation. The fitters were courteous and efficient and worked hard completing on time. I am happy to recommend Global windows to anyone.”

    Checkatrade

    Replace Lots Of Windows In 4 Bays Along With Others Throughout House. New Door Fitted Also.

    Excellent communication and attention to details. Windows were fine quality. Workmanship of highest quality and very considerate and careful. Would recommend to anyone.”

    Checkatrade
    Read all reviews
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    Get a real feel for the products we offer, and talk to a member of our team about your next home improvement project.

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