This is sponsored news by Endurance:

With summer just around the corner, the performance of composite doors will again come under the spotlight says Endurance Doors. Rising temperatures will lead to a notable rise in heat on the surface of composite doors, with the risk of delamination, cracking and splitting when inferior door skins are utilised.

It’s the time of year when remedial work starts to increase for some installers, hampering new sales and also forcing the postponement of installation dates for new jobs. There’s also the increased risk of slabs bowing, causing problems with locking mechanisms and cylinders, something that Endurance has seen first-hand in the market with failed door sets from others.

Endurance has reported several bowed, delaminated, cracked and even blackened doors that have been replaced by their Installer Partners and investigations show that material specification and not installation are to blame.

Stephen Nadin, managing director of Endurance Doors explains the issues further and commented: ‘Heat can affect composite door performance over the long-term and that’s why we specify CoolSkin door skins and a proven construction-grade Kerto LVL solid timber core. We believe we’re also the only company in the sector to implement a 3-step wet glazing process too, while our Moisture Barrier System is a proven addition to the Endurance proposition’.

He continued: ‘Sun and water can have an effect on overall composite door performance over the years as our tests have shown. But our Installer Partners specify Endurance for a promise of worry-free long-term performance and a 3mm bowing guarantee further backs this up. The trade demand better and we’ve also got a duty to consumers to offer a product fit for the long-term.’

Endurance is now in the process of implementing a new, streamlined credit return process reducing the evidence required from installers for any product or warranty queries, though numbers are remarkably low, increasing the speed that each replacement will take and therefore improving end-user satisfaction. Endurance’s team of experienced service engineers also fit any replacement parts or doors, so the installer can concentrate on their own business requirements.

For further information on the Endurance Solid and Secure composite door range please call the sales office on 01652 659259, visit, or e-mail You can also follow us on Twitter @EnduranceDoors.

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