FENSA Registered Installer

At Wirral Double Glazing, we’re proud to be a FENSA-registered installer, giving you complete confidence in the quality, compliance and professionalism of our work. Every replacement window or door installation we carry out meets the relevant Building Regulations, is energy efficient, and is registered with your local authority, as part of our comprehensive end-to-end service.

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What is FENSA?

FENSA (the Fenestration Self-Assessment Scheme) is a government-authorised scheme that monitors building regulation compliance for replacement windows and doors. Installers registered with FENSA are regularly assessed to ensure their work meets strict industry standards.

Choosing a FENSA installer means:

  • Your installation complies with Building Regulations
  • The work is carried out by a competent, certified professional
  • You’ll receive a FENSA certificate for proof of compliance and registration
  • The certificate is recognised by solicitors and estate agents when you sell your home

What You Get with Wirral Double Glazing

As a trusted local installer with over 30 years of experience, we make the process simple and stress-free. With every qualifying installation, you’ll receive:

  • A FENSA certificate confirming compliance and registration
  • Full documentation and warranty for your peace of mind
  • Support from our friendly in-house team whenever you need it

We handle the paperwork and registration, so you don’t have to.

Why It Matters

Many homeowners don’t realise that replacement windows and doors must comply with Building Regulations, and failure to comply can lead to fines or difficulties when selling your property. Using a FENSA-registered company removes this risk and ensures that your installation is safe, legal, and energy efficient.

Why Choose Wirral Double Glazing?

Trusted & Accredited

We’re FENSA-registered, fully insured, and compliant with all current regulations.

Professional & Experienced

Our in-house installers are trained to deliver precision fits and outstanding results.

Local & Reliable

Based in Birkenhead, we’ve built a reputation across Wirral for quality workmanship and honest advice.

Fully Guaranteed Work

All installations come with a product and installation guarantee for added peace of mind.

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Roger Dawe profile picture
Roger Dawe
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Another excellent job done by Thextons. We have been involved with them and A W Law previously for decades and a couple of the original units had failed. From contacting them with the issue right through to John coming today to fit them absolutely spot on. Thank you.
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Natalie Papworth profile picture
Natalie Papworth
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Excellent service my new stable back door was fitted today. The door is beautiful and the mechanics of the lock mechanism extremely secure and the seals, door handle, locks and hinges are excellent too. It has immediately made a difference to the tempeture in my kitchen with no draughts :) John did an excellent efficient and really tidy job fitting the new door and frame ,everything was left clean and tidy and the old door and frame were taken for disposal. I would thoroughly recommend this company for there excellent service, friendly and helpful staff, there efficency and the superb quality of there products . Thankyou Thextons from a very happy customer :)
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Conor Turnbull profile picture
Conor Turnbull
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Over the moon with my new Windows, Alan, Luke, Matty and Craig are a really friendly, tidy and well mannered fitting team, would definitely reccomend, thanks lads
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Cathy Foulger profile picture
Cathy Foulger
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Would definitely recommend these guys they were so friendly polite and a joy to have in my home.
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Jean Crate profile picture
Jean Crate
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Amazing bunch of guys very polite friendly and helpful and respectful
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Stephanie Bell profile picture
Stephanie Bell
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Polite and efficient team. Very pleased with results. Will use again
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chris parsons profile picture
chris parsons
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Such a fantastic process from start to finish for our new double glazing to be fitted, clear, concise communication throughout. Everyone we have dealt with at Thextons has been so helpful, friendly and knowledgeable, from office staff to the fitters and all in between. We did not expect all 13 windows to be completed within two days, everywhere cleaned up and all rubbish taken away, with absolutely zero damage to any plaster/brick work. So very happy. Thank you Thextons, we will certainly recommend to friends and family, and use in the future for any building works we need doing.

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Need replacement windows or doors installed by a FENSA-registered professional?

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Need replacement windows or doors installed by a FENSA-registered professional?

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