Advice for homeowners


Meet your
FENSA Advisor

This is Harry.

You might recognise him from our TV ad.

Harry works for a FENSA Approved installation company. He's on a mission to help professionalise installers and protect homeowners across the UK, so he started this advice column.

Double glazing - so many questions...

Like most industries, if you are a consumer looking to purchase a product, you can sometimes get overwhelmed with all the things you need to take into consideration. Just purchasing a TV can be tricky, you don't want one too small or too big for your room, then you have to think, do you want HD? Do you want a digi receiver in it? Will it work with your current surround sound? What additional cables do I need and WHY - and that's just purchasing a TV.


Purchasing replacement windows and having them fitted is no different. There are so many things you need to take into consideration, some obviously far more important than others. In this quick post, we aim to give you, the consumer, the answers to some of those all important questions.


If you're working with our Approved Installers, you can be sure that you're able to ask your double glazing companies some of these key questions to find the answers that are right for you. With FENSA windows and doors, you can be sure that you are getting the best products and service around - with the vital certificate when the installation is complete. 


Can't I just pick the ones I like and get anyone to fit them?


Well essentially, yes you can. Remember though that all replacement glazing comes within the scope of building regulations. Anyone who installs replacement windows and doors must comply with the current thermal performance standards, and you will need a certificate to prove compliance with building regulations.


If you aren't up to speed with the latest building regulations and all the rules involved (and honestly, we wouldn't blame you if you weren't - there are lots of technical considerations), then you are relying on the best double glazing companies around to advise you and make the best recommendations for your property. That's why it isn't always best to choose just anyone to fit your replacement windows. 


Okay, so how do I prove my windows are compliant?


You need to get a certificate; either from local building control or via a FENSA registered company. If you use a FENSA registered company for your replacement windows, it is nice and easy. They can self certify that their work meets the regulations. They can then provide you with a FENSA certificate.


This makes FENSA windows the best choice for you and your home, since it saves you a lot of time and effort to get your installation certified elsewhere, by other bodies. Our installers are vetted to make sure they provide the finest products and service, so if you're looking for the best double glazing companies to fit compliant windows, you can rely on FENSA.


Who is FENSA?


FENSA is the leading body providing homeowner protection in the double glazing industry for windows and doors. FENSA works with thousands of double glazing contractors in England and Wales.


We work with the best double glazing companies to provide FENSA approved windows and doors for homeowners like you. FENSA is trusted across England and Wales to regulate installations and help you to have total peace of mind for your installation. If you have questions, can know where you can turn. 


Why compliance with current thermal performance standards?


This is to reduce energy loss in line with Government policy. It's essential to improve the energy performance of existing homes, and this is one way in which the Government can do that.


That way, you can be sure that your new FENSA windows and doors will help to reduce your carbon footprint and your energy bills too, as they meet the latest standards of energy efficiency and thermal performance. 


How do I know which companies to avoid? Are there cowboys in the industry?


Alas, there are in all industries, and the double glazing industry is no different. At FENSA we work hard to ensure consumers don't meet cowboys, and we do that by encouraging people to report cowboys, or misuse of the FENSA logo to us. In addition, we publish a lot of material on how you can spot and avoid cowboys in double glazing.


Homeowners rely on FENSA to uphold exceptional standards in the industry, so you can be sure that the double glazing companies we work with are dependable, reliable and cost-effective to help you improve your home. 


Get Your Double Glazing Questions Answered with FENSA


If you would like to work with the best double glazing companies around to fit certified FENSA windows and doors to improve the look and feel of your property, use our handy installer search today. We'll help you find local companies near you to answer all your double glazing questions.


You'll get the answers - and installations - that you need for total satisfaction. 


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What to check before appointing an installer

Check that you use a FENSA Approved Installer but also check the following:

  • Ask family and friends who have used installers about their satisfaction and whether they got a FENSA certificate.
  • Check the installer's references by talking to their previous customers.
  • Get at least three quotes and check you are being quoted like for like.
  • Cheapest is not always best and good contractors are always in demand.
  • Get quotes, timeframes and the fact that you will get a FENSA certificate all in writing. A proper written contract with an agreed completion date will help prevent confusion later on
  • Check the warranty on the installer's work and ensure they have enough insurance to cover their warranty. Domestic glazing installers that are registered with a competent person scheme like FENSA are legally obliged to provide warranty insurance to cover your installation should the company cease to trade within the life of the warranty.
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