Windows and Doors Features


The first thing to understand about The Ultimate Collection is that its products are unlike any other windows, doors, porches and conservatories in terms of their basic construction technology.


Before The Ultimate Collection, if you happened to live in a beautifully renovated country cottage, you’d probably have to accept the same window and door frame style as someone who lived in a stylish ultra-modern town house.

That’s because most ordinary frames are manufactured with square, straight edged profiles. They all tend to look very similar. So, too many homes have had to settle for ‘me too’ double glazed windows and doors that lack any real personality.

What The Ultimate Collection has done is to take UPVC (PVCu), an innovative frame material, a material that can look and feel as warm and full of character as wood, and shape it into a range of unique, individual window styles.


The Ultimate Collection from South Lakes Windows Ltd offers you a whole range of sculptured and chamfered profiles, a complete spectrum capable of complementing, enhancing or transforming everyone’s dream home. (The Ultimate Collection is an advancement on The Tricept Collection which came before.)



We can paint to any RAL, Farrow & Ball or BS colour so the choice is yours! A world of colours for a world of homes! Below is an example of our standard stock colours.



The Ultimate collection from South Lakes Windows Ltd is PVC-u that is crafted to give all the warmth, character and flexibility of a natural wood frame.


But what is even more vital than the ways in which our PVCu double glazed windows and composite doors are similar to wood, are the ways in which it can actually perform better than wood.


Wood rots and decays. It also splinters. It gets damp. It needs painting. It needs year-after-year care and maintenance. Gaps appear. Wooden window frames need replacing or repairing.


The Ultimate Collection u-PVC won’t rot. Or fade or ever need painting. Or ever need care apart from a wipe with a damp cloth.


It will stay looking as good as the day it was installed.


On top of this there’s the actual glazing technology…

All our low emissivity (LOW ‘E’) sealed window units, use glass complying with the new Document L of the building regulations.

This is part of a government initiative to cut heat loss from buildings, ensuring that your home heating system functions at maximum efficiency and therefore reduces carbon emissions into the atmosphere. Helping the planet – Windows that save energy!

Our LOW ‘E’ double glazed units, with a full 20mm argon filled cavity between the panes are environmentally friendly, will cut your fuel bills down to size and significantly reduce external noise.



The Ultimate Collection is engineered from 70mm profile (the industry maximum). The profile is chambered to maximise thermal performance and reduce heat loss through the frame.


Being the same depth as conventional timber frames, the 70mm profile is more likely to butt against existing plaster lines and result in a neater finish.


Hollow metal reinforcing is included as and when specified,to add rigidity and strength.


This new windows and doors frame technology results in far greater heat retention and continues to meet all the requirements achieved by conventional hollow metal frame reinforcing.




European standards state that Grade A PVC-U must have an outside wall thickness of at least 2.8mm.


The Ultimate Collection wall thickness is 3mm which offers superb replacement window frame and PVC-u door strength and rigidity that will last for years!



The Ultimate Collection is produced with all weather compression gaskets, fused to both the inner and outer window frame sections. The gaskets include a 9mm “flipper seal and backing cushion” to ensure ultimate weather resistance and sealed unit stability. The flipper seal remains inline with the profile for a neater appearance and because they are fused to the profile they can never shrink back thus avoiding any window leaks or irritating window draughts in your home. Repairing steamed up windows is a thing of the past with The Ultimate Collection!


Integral Drainage


To enhance weather resistance further The Ultimate Collection has a sophisticated “built in” sloping drainage system that directs any water penetration away and towards the external drainage route. Definitely no steamy windows!


Neat UPVC Window Installation


To ensure your new UPV-C replacement windows are fitted neat and square, and to prevent “window bowing” upon installation, two 8mm legs have been added to the brick facing edge of the window profile to provide a solid fixing.


In order to avoid the breakdown of double glazed units it is essential that your double glazing unit remains in dry conditions at all times.


The Ultimate Collection have designed a unique glazing packer (1) that is sprung in place for the glazed unit (2) to sit on and therefore create a bridge between the sealed unit and any water or dampness thus preventing steamy condensation forming inside your double glazed windows.


Whilst all the profiles remain technically the same, The Ultimate Collection offer you a choice of either a fully bevelled system or fully Ovolo depending on your preference.

Unique in design, the Ovolo “Royale” system features a sculptured style of window offering you softer curved lines that complement every type of home be it terraced, semi-detached, detached, modern or period property.

The bevelled design is a fully chamfered style of window designed to recreate the traditional putty lines of timber profiles. The sleek modern lines will suit any home particularly contemporary designs.

70mm profile (Quicker install)

The window frame profile measures 70mm front to back, to ensure a direct replacement with timber windows with minimal trimming or finishing allowing for a quicker install of your upvc replacement windows.

Clean Lines

Both glazing systems have been designed to be symmetrically correct in that all flat surfaces are similar in width which in essence offers a far slimmer and more aesthetically pleasing appearance to your new window.

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