QTD settled on the most consistent and durable production process by Charring and finishing each thermally modified board manually, and closely monitoring the various cladding profile options available so as not to over burn these. This made sure that each board had a similar consistency of charred pattern based on the timber species being charred and the variety of finishes on offer.

This charring process makes the boards far more fire-resistant than standard charred /burnt timbers such as the Larch, Pine and Cedar etc. The reason for this is that the Thermally modified process removes all of the natural resins, sugars and impurities that are present along with reducing the timbers moisture content from around 12-18% down to 6% with a closed cell structure. This provides a more stable and durable timber reducing the risk of timber ignition if exposed over a long period to sparks or flames because it’s the above ingredients that can encourage this.

The result is a much improved charred surface without disruption or board distortion through intense heat. Only by heavy charring the surface will it become UV resistant and will therefore require minimal ongoing maintenance. Due to the slightly more delicate nature of the surface, all of our products are packaged with a protection film between each row of boards and naturally this should be maintained while onsite and prior to installation.

However should you chip are damage the surface prior or during installation then use the Qflex® touch up sealer provided, to tidy this up.