At Perfect Crystal Windows Ltd, we can guarantee professional, high quality installations, made to measure products and honest advice to help you find the perfect match for your property and to your exact specifications.


Reasons to choose us

All products are made to order following an onsite survey and consultation with our technical team. Having a manufacturing facility under the same roof guarantees we have full control over the time and quality of the production process and finished product.
  • uPVC Frames10 years against frames discolouration, warping or splits

Warranty subject to general maintenance and cleaning. PCW advise windows are wiped down annually and any hinges/moving components are lubricated and cleaned (where applicable).

  • Aluminium Frames - 10 years against frames discolouration, warping or splits

All window and door elements which are designed to be opened, closed and locked must be operated at least once a month to avoid damage through inoperative wear and tear (especially corrosion and stiffness). 

All window and door elements which are designed to be opened, closed and locked must be operated at least once a month to avoid damage through inoperative wear and tear (especially corrosion and stiffness) 

  • Sealed Units - 5 years against sealed unit failure including condensation inside of the unit. 
  • Moving parts/hardware -3 years if installed by PCW, 1 year if supply only.

    Replace or repair every damaged or jammed moving part installed by our company found to be defective due to faulty materials or manufacture

  • Installation - 10 years, only on products installed by Perfect Crystal Windows Ltd.



Only quality branded components are used: Pilkington glass, Heritage multi-point locking systems, Yale locks, responsibly sourced high performing timber and Accoya timber, glazing bars, decorative panels and hardware in a range of finishes, all from leading brands with market leading guarantees.
We offer a choice of double and triple glazing and for all those properties in conservation area - secondary glazing.
Initially we only provided only handmade, labour-intensive timber joinery, however we are now able to offer high performance traditional timber window and door products to the market within time and at competitive prices.
All our installers are registered with FENSA -the government authorised Competent Persons Scheme for the replacement of windows, doors and roof lights in England and Wales. We have been assessed against internationally recognised standards, BSI, and operate to the highest levels of quality and service.
A energy rated windows come as a standard option. C rated windows are also available on request. By upgrading old windows, you can reduce heating and cooling costs in your home.
We use a responsibly sourced high performance FSC® Pure hardwood timber that combines high grade quality and structural stability.
Our workshop is highly computerised and offers precision engineering CNC machinery to ensure the quality in smallest detail.
Our people are technically trained in all specifics of our comprehensive range of products and systems, and qualified up to the industry standards.
We design and manufacture in: timber, aluminium, uPVC, composite and various glass options: decorative panels, noise reduction, toughened, self-cleaning, privacy glass and switchable glass.
We have over 200 RAL colours available and a wide range of stains and finishes, as well as a dual colour option to help you find your perfect shade.
Approximately 85% of our jobs come from recommendations and customer referrals. With the experienced technical staff and highly computerised workshop machinery we guarantee precision engineered products exceeding industry standards.

You are welcome to visit our London showroom anytime, and you can view our extensive range of products, ensuring that the quality of our products meets your standards.

Our History


a small Perivale workshop started supplying uPVC and aluminium windows and doors


a move to a bigger factory in Park Royal, London with the addition of bi-folding doors


setting up a timber joinery line


introducing Extra Slim Sliding Doors and frameless glass


another move to a much bigger factory with our first showroom


CnC machinery helped us boost our timber production


introduced an innovative Order Tracking system and a much bigger Showroom