Trusted Suppliers & Fitters of

Rehau Windows

Here at OnTime Windows, we offer a variety of uPVC and Aluminium window styles to suit your home Every Rehau window we offer utilises Planitherm Glass. Giving you the aesthetic you’re after combined with excellent performance and efficiency. 


Rehau Windows at OnTime

Designed with you in mind.

Market Leading German Engineering

At OnTime Windows we are proud to install the market leader and German engineered window, RehauWe supply and install Rehau’s 5-Chamber Total 70 System in either the Total 70s (a sculptured system) or Total70c (a chamfered system) depending on the look you are wanting to achieve.

Excellent Thermal values and efficiency

The 5-chamber variant of the Total70 system from Rehau when paired with our Planitherm A-Rated glazing, which comes as standard on all of our windows at OnTime, gives excellent thermal values and efficiency. 

wide range of colour and furniture choices

Whether it be Casement Windows, Tilt and Turn Windows or Bay Windows, we’re confident that the wide range of colour and furniture choices we offer, will ensure that you find the perfect window to suit your home 

Plantitherm glass

Choosing the right glass is essential when purchasing new windows. OnTime Windows is a certified member of the Installer network at Planitherm, the UK’s leading manufacturer of double-glazed units.  


Plantitherm glass at ontime windows

Comfort starts with glass.

Glass Makes a Difference.

When it comes to choosing your windows, the glass really does make a difference. Glass typically makes up 70% of a window and controls not just energy efficiency but also the flow of natural light, the levels of safety and security, protection against furniture fade, and even the amount of warmth captured from outside. 

the UK’s leading manufacturer of double-glazed units.  

OnTime Windows is a certified member of the Installer network at Planitherm, the UK’s leading manufacturer of double-glazed units.  



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

No, all of our windows our bespoke and made to measure to fit your property.  

Currently at OnTime we recycle all of our waste uPVC and aluminium with a local recycling company.  

You should clean your windows with warm soapy water (washing up liquid is ideal) and a soft cloth or sponge to wipe them down.   

Remove any excess water and dry using a clean and non-abrasive cloth.

Your windows should be oiled with a 3-in-1 spray oil (or other multi-purpose spray oil) every 6 months as a general rule of thumb.  

Of course, older-style double glazing offers a limited level of heat retention. However, Building Regulations now state that replacement windows must be energy efficient. The Planitherm Comfort Glazing options are over 50% more energy efficient than older-style, non-coated double glazing. 

By switching from older-style, non-coated double glazing to one of the new Planitherm Comfort glazing options, you can benefit from; over 50% improved energy efficiency, enhanced security, up to a 20% reduction in noise, furniture fade protection and a reduction in overheating for large glazed areas, with the Comfort Plus option blocking out 50% of external heat from the sun. 

Yes, the performance of Planitherm meets the requirements of European standard BS EN 1096-4 and carries the relevant CE Marking.  

Condensation on the outer pane is a common occurrence, particularly at certain times of the year.  Energy efficient windows (such as those including Planitherm glass) help to capture heat from outside and reflect the heat back into the room.  Therefore, it is an unavoidable consequence that the outer pane of glass is cooler than it would have previously been with less efficient or older-style double glazing.