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Welcome to our FAQ page! Here, you will find answers to some of the most commonly asked questions about our products and services. If you don't find the answer to your question here, please contact our customer service team who will be more than happy to assist you.


Thank you for choosing Certified Installers Limited and we look forward to offering your a friendly and professional  experience.

  • How much will it cost to install Velux windows?
    The cost of Velux window installation will vary depending on the size and type of window, the complexity of the installation, and the additional materials and labor needed to complete the project. The best way to find out the exact cost of your particular Velux window installation is to contact us via our quotation request form.
  • Do you offer finance?
    Not at the moment but we are on it.... if you wish to use finance please let us know, although we do accept all major credit cards.
  • What are your payment terms?
    We request a 30% deposit upon booking and once your job is complete we will ask you to check everything over with your technician, take a signature to say you are happy with the work then your technician will take the final balance once the job is completed.
  • How do I request a free quote?
    It's really easy, simply fill out our quotation request form here
  • What information do I need to provide when requesting a quote for Velux window installation?
    To ensure an accurate quote, please provide Certified Installers Limited with the following information: Dimensions of the windows, type of window desired, type of installation (interior or exterior), and any additional specifications you may have. Most Velux windows will have a code you can send us which makes things a little easier, please see below how to find the code needed... But don't worry, if your are unable to provide the above information then send us some pictures via email and we will do our best to help you.
  • How long does it take to get a quote for Velux window installation?
    The time frame for obtaining a quote from Certified Installers Limited will vary depending on the complexity of the project and the availability of the Certified Installers. Generally speaking, quotes will be provided within 1-2 business days.
  • What is the process for installing a Velux window?
    The process for installing a Velux window involves measuring the opening, ensuring that the opening is the correct size and shape, installing the correct flashing kit. We would also finish the job with plasterboard and plastering if required.
  • How long does it take to install a Velux window?
    The time it takes to install a Velux window depends on the size and complexity of the window being installed. Our experienced technicians should be able to install a standard size window in around 4-6 hours. This is an estimate for an average window, the time scale would depend on the type of job and the number of windows.
  • What is the best way to install a VELUX window?
    The best way to install a VELUX window is to hire a professional, like a technician from Certified Installers Limited. We have the training and experience necessary to ensure that your window is installed correctly, safely, and efficiently.
  • How do I know if a VELUX window installation is right for me?
    VELUX windows are a great choice for many homeowners looking to add natural light and ventilation to their homes. VELUX windows are easy to install, affordable, and come in a variety of styles, sizes, and colors. To find out if a VELUX window installation is right for you, contact one of our customer service representatives who will be happy to help and advise.
  • What are the benefits of hiring a technician from Certified Installers Limited?
    Working with Certified Installers Limited ensures that your window is installed correctly, safely, and efficiently. All of our technicians and staff have the training and experience necessary to guarantee a successful installation that meets all local and national building codes.
  • What guarantee do Certified Installers Limited provide for Velux window installations?
    Certified Installers provide a 10-year guarantee for all Velux window installations. The guarantee covers any defects in materials and workmanship, as well as any issues that may occur with the window itself. In the event of a installation problem, certified installers will resolve this in a timely manner. We also have full public liability insurance so rest assured in the unlikely event of any damage we will be able to resolve quickly. In regards to the Velux products, Velux will deal directly with you to arrange replacements or any products/parts needed depending on the issue. Velux windows also have numerous guarantees that you can download from our website.
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