Composite doors vs aluminium doors – which is stronger?

Modern front door

Composite doors have been a firm favourite amongst Hertfordshire and Middlesex homeowners for many years now. But in the last couple of years, there has been considerable interest in the ‘new door on the block’ aka aluminium entrance doors.

As our enquiries steadily increase, we thought we’d take a minute to answer the question that seems to be on everyone’s lips, with a few more added in for good measure!

Composite door vs aluminium entrance door – which is stronger?

Offering a high strength-to-weight ratio and three times stronger than timber, aluminium is one of the strongest door materials around. Therefore, as aluminium entrance doors can typically be manufactured around 30% larger than a composite door, this allows it to outshine the advantages of the composite door. Although, it’s important to remember that strength can vary depending on the quality of the product.

This isn’t to say that composite doors are not strong, because they are. For example, our collection of composite doors from the highly acclaimed Solidor range combine a notably secure timber core with a robust thermo-plastic ABS door skin. However, other than steel, if you’re looking for incomparable security and strength to match your contemporary aluminium windows, an aluminium entrance door is definitely the way forward.

Composite vs aluminium – which entrance door lasts the longest?

Composite doors have an average lifespan of around 35 years. Whilst impressive, aluminium entrance doors can last up to an astonishing 45 years or longer if well maintained.

Chase Windows installations provide full guarantees for a minimum of 10 years.

Can an aluminium entrance door fade?

White entrance door with decorative bespoke glass

Actively resisting discolouration, fading and corrosion, aluminium entrance doors are ideal for applying textured and timber-effect finishes to. Intelligently ingraining the finish into the door skin, high-performance, strength and sophistication come as standard with an aluminium entrance door – looking just as good as it did from day one for well over 20 years.

Aluminium entrance door vs composite – most likely to reduce energy bills?

U-values measure how easily heat can pass through a material, so the lower the U-value the better the material is at retaining heat. Since 2010, all new doors must have a U-value rating of 1.8W/m2K or less. Composite doors from Solidor have a noteworthy maximum U-value of 1.5 W/m²K. However, aluminium entrance doors come out on top for energy efficiency – for example, our CHA500 aluminium entrance doors can achieve dramatic U-values of 0.8 W/m²K.

Open up new possibilities with a high-performance aluminium entrance door

With so much choice at your disposal, including aluminium French doors, aluminium Bi-fold doors and aluminium sliding doors, if you’re searching for a trustworthy installer, contact us today to discuss your opportunities further.

Related to this topic: Reasons to upgrade to an aluminium entrance door


Over 11,000sq ft of space with of 6000 sq ft of purpose built showrooms, one of the largest home improvement showrooms in the North London, Hertfordshire and surrounding counties. With state of the art displays and kids area all under one roof.

Opening Hours: Monday – Friday 09:00 – 17:00 Saturday 10:00 – 16:00 Sunday 10:00 – 13:00


Smaller showroom with limited range available but good for client convenience.

Opening Hours: Monday – Friday 13:00 – 17:00 Saturday 10:00 – 16:00 Sunday By Appointment Only

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11 Pindar Road
Hoddesdon, Herts
EN11 0BZ

189 Chase Side
Enfield, Middlesex

Tel: 0208 366 6500


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