About Conserv-A-Tech

Conserv-A-Tech are a house extension and double glazing company based in Stevenage. We build house extensions, conservatories, and orangeries throughout Stevenage and Hertfordshire. Including Letchworth, Hitchin, Biggleswade, Welwyn Garden City, St Albans, Cheshunt, Broxbourne and Hoddesdon.

We also install a selection of uPVC and aluminium windows and doors in our coverage areas.

We are FENSA approved and Which? Trusted Trader certified installers so you know you can rely on us for your home extensions and improvements.

Conserv-A-Tech Conservatories, Stevenage

The Team

Conservatech Owner

Eric Knappett


Conserv-A-Tech is owned and managed by Eric Knappett. With a wealth of experience within the conservatory construction industry, Eric has always been convinced that the key to the success of Conserv-A-Tech is customer focus on attention to detail and satisfaction, and from the very beginning he made a pledge:

“To put the customer first by providing complete professionalism and excellence of service, product and installation, together with real value for money for a superior product.”

He endorses this to the whole team as he project manages each build.

conservatech installation team

Installations Team

MTC Qualified Installers

Our installers are MTC Qualified and are experts within the double glazing industry. They have a wealth of knowledge from continuous training of new products from within the industry and we are constantly growing. Our installers work extremely well and treat your property with respect, extending our customers with courtesy continuing all the attributes of the Company’s ethos.

If you are looking for a truly professional installation, you have come to the right place. Together as a team, we run a professional and honest company, with high-quality products.

Let us create your own unique space and turn your house extension dreams into a reality.

accounts and administration conservatech

Kim Holloway


Kim has been with the company since its inception in 2007. She is experienced and qualified with the SAGE accounting system, and also our admin queen, being responsible for all aspects of the administration from the initial welcome package as a new customer order being placed, to the final invoice and guarantee documentation upon completion.

Kim is also in her spare time a qualified hypnotherapist, and enjoys walking her dog! Kim is the person that keeps us all on our toes!

Approved Installers


Our team has passed various assessments in order to qualify as Which?Trusted Trader Installers.

To meet the standards of this scheme, our assessment included;

  • How we deal with handling enquiries, sales and our customers
  • How we survey a potential installation
  • How we install our conservatories, extensions and orangeries.
  • Our sales process
  • Our buying and manufacturing process
  • Our after sales service

We passed every one of these tests which means we can offer you a home improvement service that you can trust in. Contact us for more information on our high-quality installations and available products.

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