We have a large selection of detailed information available for you to view relating to product specification and are happy to forward these by post or via email.

We are members of

The Federation of Master Builders

Fensa members

An Aproved installer of Pilkington Activ
and also a Launch Partner for Activ.

Approved Energy Rated Installer of Omega Ultimate
Window systems.

Members of the Fair Building Scheme.

We have a state of the art Computer System at the heart of Sentinal that allows us to design and cost your requirements to the penny, and our software for Windows and Doors links directly with the manufacturing facilities based in Devon, this all ensures we can do our jobs to the best of our ability.

Mark or Melvyn will be happy to discuss your requirements and prepare a simple no-nonsense quotation for you to check over.

Once your mind is made up we will prepare detailed paperwork to ensure we have understood your requirements correctly and once you are happy to proceed we will process the order.

We believe in an ethical approach to all the business we do and put forward our best price first time with no annoying follow up calls. This coupled with a persistent strive for perfection has earned us a high rating among our many thousands of customers over the years.

When we have finished the work requested you will have the opportunity to comment on all aspects of the work undertaken, to ensure that we have done the work to your complete satisfaction. Completed questionnaires are available for your perusal at our showroom.

We have also been accepted onto the Trading Standards Fair Building Scheme.

Best wishes

Mark O'Hanlon Surveyor & Technical
Lisa O'Hanlon Administration & Accounts
Melvyn Clark Sales and Administration