Modern or traditional, you can choose from our wide range of windows and doors made to measure exclusively for you. Denis Windows manufactures its products from Duraflex System with high grade materials to meet British Standards.

Denis Windows provides superb high quality products along with great value for money.

Decorative lead designs, coloured glass, patterned, bevelled, obscuring glass and hundreds of different configurations and openings - you'll be sure to find a style that suits your home with our high quality products. Not only do our new replacement windows make your home look good, but they help to increase its value and energy efficiency, backed by our extensive 10-year no quibble guarantees.

Standard Features

All our windows and doors come with top-quality features as standard:

  • Full compliance with the latest Building Regulations and FENSA
  • Multi-point locking systems to enhance home security
  • Internally-beaded as standard for added security
  • Steel reinforced frame as appropriate, for increased strength
  • Fire Escape hinges fitted as standard where required for your safety
  • "A" Rated energy window units keep warmth in your home, helping to cut heating bills and unwanted noise
  • Trickle air vents based on cubic meter calculations for each room
  • Replacement windows and doors are guaranteed not to discolour, rot, warp or twist
  • Secure by Design accreditation


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