Below we have made a chart to show our honest opinions on each of our products. Although there may be drawbacks for some of them there are also a lot of positive points to be considered.

If you would like to read more about each of the products we have a range of pages on our site for you to explore and read through to make your decision.

Systems Chart

Aluminium Origin Aluminium Schuco Timber
Thermal Efficiency fourstar threestar twostar
Durability fourstar threestar twostar
Low Maintenance fourstar 5star 4star
Low Price fourstar threestar twostar

To explain some of the chart a little better…

Thermal Efficiency:

Each product has a different level of thermal efficiency, UPVC is the best thermally efficient and cost effective product. It is more difficult to make aluminium thermally efficient as its thermal bleed is through the frame which it is extremely expensive to upgrade. Timber products create a good thermal value due to its nature, possibly the best thermal gain that can be achieved on the market currently, but there are many trade-offs with this.


UPVC is an extremely durable product as it is strong tough and resilient, although unlikely it is possible Aluminium can pick up rust. UPVC is unlikely to need to be changed for any reason other than a change of style. We at G&N windows offer a 10 year guarantee on all parts and Labour.* Timber is only guaranteed for 5 years before you will need to sand down and varnish the frames, this may be the least durable.


Regardless of how well timber is made it will always require maintenance over the years. Ali in contrast is considered the most durable as it is less susceptible to degeneration, a ridged product with no expansion / contraction issues, however will still need maintenance every now and then. UPVC although not quite as durable as aluminium only requires an occasional wipe down with a cloth to keep them looking good. Both Aluminium and UPVC have the advantage they do not rot, rust or fade, with virtually no maintenance they are both convenient and time-saving.


Although there are varying prices for different products we aim to supply and install the very best quality throughout our range.

*5 year guarantee on glass.