Helping you win more work

It’s a fact: becoming a FENSA Approved Installer helps you win more work, without having to discount your prices.

Because by joining FENSA, you prove your professionalism and can reassure customers they’ll receive a FENSA certificate when the job’s done. Reassuring for them to know, and vital when selling their home.

Boosting your business for less than you think.

Joining FENSA costs less than you think, and saves you the time and hassle of registering your installations with the local council.

The FENSA certificate is better known than any other, and our marketing support will help boost your business success.

Additional Benefits

TradePoint Federation Member

Get 10% discount* across B&Q and TradePoint both in store and online. No catch, no minimum spend. *T&Cs apply.

Cut costs with a fuel card

Get the right fuel card for your business and benefit from discounts of up to 10p per litre plus a fortnight’s interest free credit.

Win leads from FENSA online

Homeowner leads direct from the FENSA website straight to your inbox. Plus your own dashboard to manage customer enquiries.

Free BFRC Energy Ratings

Have your company logo added to BFRC energy rating labels when you purchase from BFRC Approved Manufacturers - free!

Specialist business insurance

FBIS offers a range of policies tailored specifically for the glazing industry with every type of business cover available.

Offer finance to your customers

Through Improveasy, offer a variety of finance options to homeowners including 0% interest and ‘buy now pay later’.

Branded workwear from Mascot

Great deals on coordinated shirts, trousers and other clothing with the FENSA logo and your own company branding, or in any combination required.

FENSA Training Academy

Training courses tailored specifically to the glazing industry, from short two-hour courses to full NVQ diplomas.

And that's just the beginning!

This is just a taste of the many extra benefits you'll enjoy as a FENSA Approved Installer. We're constantly working on great new offers, exclusive discounts and fantastic opportunities to win more work for our Approved Installers.

Guide to FENSA fees element

In addition to a one-off Application Fee of £265 ex VAT when joining, your ongoing FENSA fees will be determined by the number of jobs your company completes each year.



per year

Yearly Fee*


Yearly Assessment Costs**



£1.99 per job



per year

Yearly Fee*


Yearly Assessment Costs**



£1.99 per job



per year

Yearly Fee*


Yearly Assessment Costs**

£135 x 1% of jobs


£1.99 per job

*Yearly Fee in the year of joining FENSA is calculated on a pro rata basis.

**Yearly assessment costs based on 100% assessment pass rate.

All prices are exclusive of VAT.

Sample yearly FENSA fees

10 jobs a year You pay
Yearly Fee* £168
Yearly Assessment Costs** £135
Certificate Transaction £19.90
Yearly total: £322.90 ex. VAT
100 jobs a year You pay
Yearly Fee* £168
Yearly Assessment Costs** £270
Certificate Transaction £199
Yearly total: £637 ex. VAT
300 jobs a year You pay
Yearly Fee* £168
Yearly Assessment Costs** £405
Certificate Transaction £597
Yearly total: £1,170 ex. VAT

For more information see the full FENSA Scheme Fees.

Backing your work with our famous certificate

The FENSA certificate confirms to your customers their window and door installations comply with building regulations (a legal requirement), are energy efficient, and registered with the local council. It also reassures them that your guarantee is insured.

The certificate is issued by us once your job’s complete. Only FENSA Approved Installers can promise the FENSA certificate to their customers.

What’s covered?

FENSA covers replacement of the following against the relevant Building Regulations, in residential properties cited on their original footprint, where the use or size of rooms has not been altered:

  • External Windows
  • External Doors
  • Roof Windows
  • Roof Lights

What’s not covered?

FENSA doesn't cover:

  • New Conservatories
  • New porches or existing porches where there is no heating
  • New builds
  • New Extensions
  • Repairs (where frame not included)
  • Commercial properties

What's involved when you join FENSA

Joining FENSA is straightforward, and you’ll be kept informed at every step so you know what to expect.

Click the “Join Now” button at the top of this page and complete the form. Once submitted, we’ll contact you to answer any questions or just clarify the importance of being a FENSA Approved Installer.

One of our assessors will meet you on a site and day of your choice. During this visit, we’ll have a professional discussion and assess your competency while you work. All evidence will be collected on this day, to minimise disruption.

A review of the onsite assessment report and all documentation will be carried out by our technical and certification team. From here our certification decision is made.

FENSA facts

  • FENSA certificates cover replacement windows and doors made out of many materials and not only uPVC.
  • A FENSA certificate is proof that an installation complies with building regulations. It is not a guarantee.
  • The average FENSA Approved Installer doing 40 jobs a year would pay less than £506 ex VAT in annual fees. This includes all assessments and job notifications.
  • FENSA has issued more than 13 million certificates since 2002. That’s more than half the number of dwellings in England and Wales.
  • Homeowners rate FENSA Approved Installers 4 out of 5 when asked about their overall experience.
  • FENSA is the largest competency scheme within the UK glazing sector and most homeowners want a FENSA Approved Installer to replace their windows or doors – this means being with FENSA wins you jobs!
FENSA - Frequently Asked Questions (FAQ)
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