Strong to the core

Endurance is using the winter months to promote its design, which helps prevent the warping and swelling other timber core doors suffer from.

Homes are heated from the interior, causing the inside face of the door to warm up while the exterior face is left open to the ice-cold air. Consequently, this can cause doors to twist and warp. To ensure this doesn’t happen to an Endurance composite door, a number of measures have been put in place throughout the door build, the company said.

The Endurance door features a solid timber core which has over 17 laminations, making it far less susceptible to twisting and warping than solid core alternatives with fewer laminations.

The layers of an Endurance door are also cross layered, further improving their resistance to any warping. In order to demonstrate their confidence in the anti-warping qualities of the Endurance Door design, any slab that bows by more than 3mm will be replaced free of charge.

A second issue that installers face is the fact the consistently wet conditions can cause water ingress at the foot of some solid timber core composite doors. This leads to swelling that can cause the door to get stuck or refuse to close. To avoid this, the Endurance door design has an integrated Moisture Barrier strip at the foot of the door.

The Moisture Barrier strip is made of RocFoam, a blown PVC product that is manufactured in-house by Rocal Extrusions – the plastic extrusion arm of the Rocal Group.

Endurance has also reported that door sales are at an all-time high – 30% year-on-year – with January 2019 being the single largest month of sales in the brand’s history.

Stephen Nadin, managing director of Rocal, said: “Thanks to our excellent sales performance, we have been able to invest heavily this year in new machinery, people and transport. The idea is to pass on our positive performance to improve our customer experience and make Endurance the choice of the trade when it comes to composite door suppliers.”