The Real Differences Between Aluminium and UPVC Windows

Aluminium windows have the edge for longevity when talking about how long do windows last, but UPVC windows are on a par with them so far as maintenance is concerned, which is extremely minimal in respect of both materials.

30-40 years, possibly more, is the potential lifespan of aluminium windows. Attribute that to their immense strength, the foundation of how they manage to combat weathering. A resilient powder-coated finish fends off the manifestation of fading, corrosion and peeling.

On average, UPVC windows last 20-30 years. They too have superb durability and weather-resistance but be wary of sub-par UPVC profiles that can become discoloured, stained and brittle when exposed to sunlight and temperature changes.

Timber takes a lot of looking after, in stark contrast to aluminium and UPVC, which only need the following bits of irregular care:

• Wipe down the frames and glazing using a soft non-abrasive cloth and mild soapy water
• Keep the window components lubricated (only necessary every few months)
• Check on the seals and gaskets now and again

With proper specification, meaning the inclusion of dependable locking and glazing, aluminium and UPVC windows can each realise first-rate security.

It’s unusual for contemporary aluminium or UPVC energy efficient windows not to incorporate multi-point locks, which engage a window frame at various points, vastly reducing the possible threat of a forced entry.

Aluminium’s rigidity averts any bending or warping, which is another defence against forced break-ins. Although UPVC doesn’t quite manage to replicate aluminium’s uncompromising toughness, it’s capable of rivalling it for security when a frame incorporates superior hardware and a reinforced lock.

Essentially, window security doesn’t entirely come down to whether frames are UPVC or aluminium. Lock, hinge and glazing quality is as critical to overall security, if not more so.

For sure, as the U-value of UPVC windows is somewhere around 1.2 W/m²K and aluminium windows can reach a similar level, signifying exceptional insulation. Just so you know, our UPVC windows achieve an A+ energy efficiency rating, and some of our aluminium windows achieve A-ratings.

The insulating gas between each pane lowers heat loss and in turn, raises warmth and energy savings. An aluminium frame contains thermal breaks, and their job is to disturb heat flow through the material, central to how aluminium emulates the insulation of UPVC.

High-performance windows will harvest abundant warmth in winter and cool your space in summer, making you less dependent on heating and air conditioning systems. A lowering of energy consumption is great for your finances and the planet.

Whichever material you prefer, you’re assured of top-drawer thermal performance.

Consult our article on how to insulate windows for advice about increasing the thermal abilities of energy-efficient designs.

Aluminium windows are the epitome of contemporary elegance, with noticeably slim profiles, maximising sightlines. The vast strength of aluminium enables frames to be ultra-sleek and still capable of supporting large glass panes. Applications of aluminium designs tend to occur at modern properties and in rooms where utmost natural light gain is coveted.

UPVC windows commonly mirror classic wooden frames and befit traditional and period residences. When displaying woodgrain foil finishes, it emphasises their traditional aesthetic, without a requirement for repeated upkeep, like there is with authentic timber designs.

Almost any RAL colour can be powder-coated onto aluminium frames, opening the door to a world of finishes.

Foil finishes for UPVC aren’t as broad, but they incorporate a good variety of woodgrain effects and modern hues.

There’s nothing to say that you can’t combine the two window materials for cost or styling purposes – aluminium bi-fold or sliding doors can exist alongside UPVC window frames elsewhere. Colour matching holds the key to a harmonious look.