118 x 21mm Thermory® Thermo-Treated Ash Decking
Short £66.83 per m2
Medium £73.80 per m2
Long £82.99 per m2
All prices include VAT but exclude delivery
- Thermo-treated hardwood decking boards
- Cut from Ash
- From the Thermory® collection
- Outstanding durability
- Smooth both sides
- Dark, rich finish, outstanding grain detail
- Pre-grooved for use with ‘Clip-Strips’
- Available in 3 length groups
- Half of the weight of IPE - excellent for roof terraces
- Call our friendly decking team to place an order.
Thermory Product Specifications
- D45J profile
- ‘Intense’ colour shade
- From the Karakum Thermo-Ash range
The Thermory® collection is produced by Brenstol, a Northern European manufacturer of profiled solid wood products. With more than 13 years of experience, it is one of the leading thermo-treated wood producers in Europe, offering a wide range of interior and exterior products. As a result of continuous product development, the Thermory® collection offers beautiful, durable and functional timber that is environmentally sound. All items are free of chemicals, harmless to use and do not originate from endangered rainforests.
Thermory® only use high quality ash for their decking boards, harvested from well-managed forests in North-America where good growing conditions and strict drying standards are maintained. This range has been subjected to their ‘intense’ thermo-treatment’, which heats and steams materials up to a maximum temperature of 215°C, ensuring maximum stability and a dark, rich colour throughout the timber. This chemical free process also ensures a low moisture content, removes resin, reduces splitting strength and improves durability against decay. The end result is the transformation of responsibly sourced ash, a timber with limited exterior uses, into a decking material with class 1 durability credentials equal to Ipe and Teak.
Our thermo-treated decking boards are offered in 3 length ‘groups,’ each with a different price. As such, you will be charged different metre rates if your order contains boards from separate groups. Precise stocks do vary, but we will always do our best to match your required tally. Please note that decking boards may be supplied over length, so you will need to ensure that your fitter has the correct tools on site to cut them down.
Board Length Groups
- Short – 1.8m to 2.1m
- Medium – 2.7m to 3m
- Long – 3.3m to 3.6m
Our thermo-treated decking should be fitted using the hidden Thermory® ‘Clip Strip’ system. Boards should be fitted perpendicularly onto joists at 400mm centres. Spacing of 6mm should always be allowed. It is essential that air can circulate under the decking, allowing the relative humidity above and below to fluctuate evenly. Do not trap moisture beneath the deck. Ensure support joists do not sit directly on the surface.
These boards are supplied in the Thermory® D45J profile, so feature two pre-grooved channels on the reverse face for use with their unique ‘Clip Strip’ system. Decking boards simply ‘clip’ on to these specially contoured fastenings once they are secured onto the joists of the sub-frame. Clip strips automatically set spacing at 6mm. 8 Clip strips per square metre
Like all natural decking, Thermory® will begin to gently weather down once installed. This will include an attractive silvering/greying and the development of small, surface hairline cracks. Whilst many prefer to allow this appearance to develop, it can be checked through the regular application of Thermory® Thermo-ash oil. The boards can be sanded back at any time to restore the original tones. The surface should be kept clean of leaves, pine needles and any debris that can hold moisture and attract mould and mildew. Barbecue spills, wines, condiments, dog nails, high heels, etc. can stain and scratch the surface. Most of these will fade and become less noticeable over time. Deeper scratches and stains can be blended with a light sanding.