FENSA Registered Installer 43994 · CPA member 4485Lancaster 01524 953110 · South Lakes 01539 326211
Bay Windows NW LtdSouth Lakes Windows & DoorsLocal family-run company
FENSA registered companyRegistration 43994
CPA approved craftspeopleCPA member 4485
Our supplier Emplas
Accreditations & memberships
Emplas — Secured by DesignEmplas — BRE certification, UKAS management systems, ISO 9001, ISO 14001 and ISO 45001Emplas — BFRCEmplas — Cyber Essentials certifiedEmplas — Made in Britain
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Serving Lancaster and surrounding areas

Replacement windows and doors in Lancaster

Planning new windows for your Lancaster home starts with the openings you already have. Bay Windows NW Ltd can help you consider the frame layout, finish and opening arrangements alongside composite and uPVC entrance doors. Tell us whether you are replacing one unit or coordinating a whole-house project so the estimate covers the work you have in mind.

Request a free estimate →
FENSA-registered installationsCPA member 4485Local survey & fitting team

Keep the front of your home working as a whole

Compare the proportions of neighbouring windows, the colour of your entrance and the balance of fixed and opening panes. For a bay, include the number of sections and a description of its shape. Photographs and approximate sizes help explain the design, while the final survey checks what can be supplied and fitted.

Prepare a room-by-room enquiry

List each opening with its quantity, approximate width and height, and any privacy or ventilation concerns. Mention upstairs access and the route through the property. If you have several different sizes, put them in separate notes so they are not mistaken for identical windows.

Explore options for your Lancaster project

Browse uPVC windows, composite doors, uPVC doors and roofline services in Lancaster. For a garden opening, compare our French and sliding patio door guides. Start a free estimate when you have the details, or contact us for help if you do not yet have measurements.

Other areas we serve

LancasterMorecambeUlverstonBarrow-in-FurnessKendalWindermere

Window and door examples

These photographs show our wider website gallery and product examples; they are not presented as installations at a specific address in Lancaster.

Completed house with white replacement windowsBefore and after composite door replacementAnthracite grey flush casement window example

For more pictures, browse our main website.

Explore our services in Lancaster

uPVC windowsOptions, survey details and enquiries in Lancaster →Composite doorsOptions, survey details and enquiries in Lancaster →uPVC doorsOptions, survey details and enquiries in Lancaster →Fascias, soffits and gutteringOptions, survey details and enquiries in Lancaster →

Planning a whole-home replacement

If you are replacing several windows or doors, list each opening separately and identify the rooms. This helps us discuss a consistent external finish while allowing different opening styles and privacy glass where needed.

Include your postcode when requesting an estimate so we can confirm the appointment arrangements for your property.

A local, family-run business you can trust

Bay Windows NW Ltd is a local, family-run company. Our team includes an experienced industry professional with 35 years in the uPVC trade, alongside four installers.

FENSA registered — 43994Registered through Bay Windows NW Ltd, for applicable installations.
CPA membership — 4485Membership number 4485. Licence expiry: 22 November 2027.
Fitting & debris removal includedOur supply-and-fit estimates include professional fitting and removal of the old units and installation debris.
Deposits agreed clearly in writingStandard deposits are typically 20–25%, with special-order terms agreed before work begins.
Typical fitting in 3–4 weeksSubject to final survey, specification, supplier lead times and availability.