Today, there are so many companies making empty promises about their double glazing, you’re right to be a little cynical! You certainly shouldn’t take chances with something as important as your own home. With a growing family ourselves, we understand the financial commitment that double glazing can involve, therefore the most important thing we offer is… Peace of mind! We are confident that you will not find better double glazed products and service in the Lancaster – Morecambe – Carnforth – Kendal and Lake District area.






Enjoy a leisurely browse around our stunning converted barn showroom in Claughton (A683), just outside Lancaster – Windows, doors & conservatories fully installed and on show. Situated conveniently near the M6 motorway near the Lancashire / Cumbria border. Call in for a coffee!


Whether it’s UPVC double glazed windows, composite doors, conservatories or ANY of our fabulous products – You are guaranteed a bespoke design, unrivaled service and flawless finish. It is also a high priority of ours that our after sales service is as good as the installation. A Lancaster double glazing service you can trust!

Whether it’s high quality UPVC Windows from The Ultimate Collection, or the stunning ‘Residence 9’ UPVC window systems you can be confident that your new UPVC replacement windows have been expertly installed and are of market leading quality. Perhaps you are looking for ECO friendly traditional wooden framed windows? Our beautiful timber windows from Bereco are sure to satisfy! Of course there is the period styling and traditional elegance of sliding sash windows in UPVC or timber.

Thank you so much! @bygonesashwindows hope you all have a lovely Christmas and Happy New Year xx🥂
Thank you @signsexpress Lancaster for the livery on our Service van #newteammember  #signage great service as always.
Happy Anniversary to us, 13 years in the making #southlakeswindowsltd #whenqualitymatters
Just taking delivery of these absolutely  stunning vertical sliding sash windows from @bygonesashwindows 😍
Installation in The Lake District in Agate Grey
🎉🎈Happy Anniversary to us!! 12 years of continuous trading. 🎈🎉We would like to thank our wonderful customers for their ongoing support and loyalty, our fantastic suppliers who we have developed long-standing relationship with since we opened our doors and of course our amazing staff members who have played a fundamental role in our success story. 🥂to many more. #happybirthday #whenqualitymatters #southlakeswindows #windows #doors #conservatory #extensions
Christmas treats from Masterframe Windows #Bygonesash #Masterinstallers #MerryChristmas
Suffolk Lavenham residential uPVC door with deep midrail in French Grey #entrancedoors #suffolk #doorsofinstagram #toplight #design