CSL Manufacturing Sash Windows


About Us

CSL manufacturing is a small company with over 10 years experience in making and installing traditional sash windows and casement windows that meet building regulations.

We pride ourselves on the high standard of our workmanship and service. We will discuss all the options available with each quote, and personally oversee the manufacturing and installation of the finished product - the same person will be involved from start to finish of each job to ensure that all criteria are communicated and met.

We are a FENSA registered company meaning we are able to self-certify double glazed window and door installations as complying with government energy efficiency guidelines and building regulations covering glazing safety.

We are also GGFi registered and as such can offer insurance backed guarantees including your deposit among other benefits.

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CSL Manufacturing

Double Glazing

  • Joinery grade soft or hardwood windows and sash boxes
  • Like to like matching to original including decorative wood moulding, where possible
  • Fully draught proofed
  • All work has two coats of primer and undercoat, two coats of Dulux satin weather shield and a final coat once installed
  • A 5 year guarantee on all workmanship

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Draught Proofing

  • Full service leads to 95% draught reduction
  • Reduction in outside noise
  • No more rattles!
  • Optional pulley and window furniture replacement
  • Optional full re-paint of whole window, while they are removed for draught-proofing

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Double Glazing and Sound Proofing

  • Our standard double glazed units are made up of low emission soft coat Planitherm glass, with a 16mm argon gas filled cavity and a 4mm clear or frosted (for bathrooms) outer payne. This provides a center payne U value of 1.2 and a whole window U value of 1.6. Click here for more info.
  • Optional replacement of outer clear glass with soundproof glass (see below). This is also available for single-glazed windows. Click here for more info.
  • We can also replace your broken single pane glass with antique glass. This is specially made glass that has the same defects as the original, thereby not changing the look of the window.

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Contact Us

If you are interested in getting in touch with us, simply fill in your name and number below and we will get back to you.