Windows At Ontime

Aluminium Windows


Windows at ontime

AluK 58BW Aluminium Window

"Steve and his team have worked on a few properties we manage. They always arrive on time and within budget. Great local, friendly company."

Julie Couch

The effective & High performance window solution

The Optio 58BW range at OnTime is an effective and high performing solution if you need new windows. The Optio window is built to the highest UK standards making it a strong, secure and superior choice for your home. Offering slim, clean lines it is able to suit both new build and residential replacements.  

innovative polyamide thermal break technology

The 58BW window utilises the innovative polyamide thermal break technology from AluK. This creates a barrier between the cold air outside and the warm air inside. This technology reduces the thermal transmittance which in turn enhances the U Value of the window.  

A wide range of styling choices available

Available in a wide choice of both standard and non-standard colours, we’re sure that if Aluminium is what you’re looking for in your home the Optio range will have something to suit your home.  


the forefront of aluminium window and door design.



We Are Here To Help You With Any Questions You May Have

The AluK Optio window has been designed with performance and efficiency in mind, each frame incorporates a ‘thermal break’. This effectively insulates the doors and windows against heat loss, raising your home’s internal temperature and helping reduce the risk of condensation.  

We use our Planitherm glazing in all of our aluminium windows. The Optio range has a wide range of glazing sizes to suit an array of glazing specifications.  

With no requirement for re-painting or re-varnishing, aluminium windows and doors will never fade, deteriorate or rust, even in harsh environments, such as coastal locations. 

Yes, there are a wide range of dual colour options available on the 58BW range.