Windows are much more than PVC-U and glass. Windows let light and comfort into your life and make your home a warm, secure place you can be proud of.



The entrance to your home has an important job to do. The right door can transform and add value to your home. Benefit from lower energy bills and higher security for your peace of mind.



Conservatories add more than just extra space. Conservatories give more than added property value. Conservatories bring light and energy into your life and transform the place you call home.

Welcome to the website of Immac Ltd. Certass accredited installers of Windows, Doors and Conservatories.

Immac Ltd are experienced, Certass accredited Installers of UPVC windows, doors, conservatories and roofline plastics. With over 20 years experience in the industry, we have a depth of knowledge and a reputation that we are very proud of.

We offer all types of energy efficient double glazed windows, composite doors, bi-fold doors, french doors, roofline plastics and much more. Our qualified installers are fully insured to work on all domestic and commercial properties.

Why choose Immac Ltd?

  • All surveys and quotations are undertaken by the proprietor of Immac ltd - Lee Harriott.
  • All our work is backed by QANW, (Quality Assured National Warranties)
  • We are approved Certass Installers
  • We are approved and vetted by Trust Mark, the government endorsed competent tradesman scheme
  • We are installers of Eurocell building plastics, arguably the best manufacturers of UPVC products

Certass Accredited Installers


Certass, is a Competent Person Scheme covering the installation of replacement windows, doors and associated glazing products.

Eurocell Installers


Eurocell offer a high-quality range of UPVC windows, doors, conservatories, guttering, soffits, fascias and composite doors.