Cross-laminated timber (CLT).

Cross-laminated timber is formed in a similar way to glulam by stacking a number of layers of timber (known as lamellas) – usually spruce – at right angles to one another and subsequently glued to each other to create panels of up to 18m in length, creating structural roof, wall and floor panels capable of spanning up to 8 metres.

When compared to conventional timber construction products, cross-laminated timber offers entirely new options when it comes to load transfer.

To prevent pest and fungal attack only technically dried wood with a wood moisture of 12% (+/- 2%) is used to produce solid cross-laminated timber. All boards used are subject to both visual and mechanical quality control checks.

The factory cutting and machining of CLT timber takes place under strictly controlled conditions, using state-of-the-art CNC technology for maximum accuracy.

Our PEFC certificate guarantees that the raw material used comes from ecological, economical and socially responsible forests.

The Benefits of CLT.

Environment. Timber used for CLT is PEFC certified. Wood has negative carbon intensity when taken from managed sources, has a low embodied energy and is a renewable energy source.

Ease of use. CLT is factory manufactured to exceptional levels of accuracy to ensure minimal defects whilst reducing construction time and cost. The panels are installed with crane and lightweight power tools without the need for wet trades. Site storage is reduced by just-in-time delivery scheduling and health and safety issues are minimized due to the lightweight nature of the product.

Fire. CLT offers significant advantages in respect of fire protection compared with reinforced concrete or steel materials. In a fire, a charred layer forms around an un-destroyed core which retains its load bearing capacity, thus reducing the entry of oxygen and heat from outside which delays significantly the further spread of flame.

Shape & Span. CLT can be manufactured in sizes from 75mm-334mm deep, 1280mm – 2950mm wide and up to 18m in length. CLT panels can be formed to enable site installation of windows, doors and architectural features and can if required, be manufactured curved with a minimum radius of 8m.

Appearance. CLT is generally manufactured from Spruce but can also be manufactured from Larch, White Fir and Douglas Fir. CLT can be manufactured for exposed, internal areas or in non-visible quality and can be clad in any number of materials.

Thermal & Acoustic Properties. CLT walls with plasterboard will provide acoustic performance in excess of Building Regulations and make a contribution to the U value.

Maintenance. Designed and installed correctly, CLT panels require little or no maintenance.

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