Space Maximisation
Ultra-slim frames and large glazed panels eliminate visual barriers—creating a bright, expansive feel in any room.
Thermal Efficiency
Thermally broken profiles and double- or triple-glazed units achieve U-values as low as 1.4 W/m²K, reducing heat loss and cutting energy bills.
Enhanced Security
Multi-point locking, hardened steel shoot bolts and optional laminated glass provide robust defence against forced entry.
About W W Windows Carlisle Ltd
Since 1997, W W Windows Carlisle Ltd has been setting the benchmark in architectural glazing from our Carlisle headquarters. We offer a fully integrated service—encompassing detailed site surveys, bespoke CAD design, in-house fabrication and FENSA-registered installation—to ensure total quality control.
Our expertise spans aluminium, timber, PVC-U, steel and composite systems. Whether you’re installing energy-saving double glazing, designing sleek shop fronts, fitting automatic entrances or integrating bespoke bifold doors, we tailor each project to your functional needs, aesthetic vision and budget. Every product undergoes rigorous testing for thermal performance, weather resistance and security compliance (including PAS24 and Secured by Design), ensuring optimal reliability in the UK’s most challenging climates.
Dedicated project managers oversee every detail—coordinating scaffolding, structural works and finishing trades to minimise disruption and deliver on time. Plus, our 24/7 Emergency Glazier service stands ready to board, repair or replace damaged glazing at a moment’s notice, restoring your property’s security and appearance without delay.

Our Services
Double Glazing
Upgrade to Double Glazing Carlisle by W W Windows Carlisle Ltd—high-performance windows delivering U-values as low as 1.2 W/m²K, acoustic reduction up to 45 dB and multi-point security, perfectly suited for Carlisle’s climate.
Bifold Doors
Experience the ultimate indoor–outdoor connection with Bifold Doors Carlisle—precision-engineered systems offering U-values down to 1.4 W/m²K, smooth operation and multi-point security, custom-made for Carlisle properties.
Automatic Doors
Elevate your entrance with Automatic Doors Carlisle from W W Windows Carlisle Ltd—whisper-quiet drives, advanced safety sensors and secure multi-point locking, custom-integrated for Carlisle’s commercial and residential properties.
Testimonials
frequently asked questions
How wide can Bifold Doors Carlisle span?
Are your bifold doors energy efficient?
What is the typical installation timeframe?
Do you offer heritage or bespoke designs?
Ready to Transform Your Space?
Bring light, style and functionality to your Carlisle property with Bifold Doors Carlisle from W W Windows Carlisle Ltd. Call us now on (01228) 810 404 or book your free survey.