All information about
cross-laminated timber

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Cross-Laminated Timber (CLT) is made from timber lamellae- typically spruce- which are stacked in layers that are arranged perpendicular to each other and then bonded under high pressure using formaldehyde free adhesives to form large-format structural building components with bi-axial qualities.

The KLH solid timber panels are mass customised structural construction components that can be used as wall, floor and roof panels for construction projects of all building sectors. Thanks to the cross lamination of the timber lamellae the effects of moisture movement in the panel plane are reduced to an insignificant minimum, whilst at the same time, it increases the overall structural load bearing capacity and dimensional stability in the panel plane.

The KLH panels are manufactured in accordance with the KLH European Technical Assessment (ETA-06/0138) and only kiln dried timber with a moisture content of 12% (+/- 2%) is used for the production of KLH® solid timber elements. KLH® solid timber panels are CE certified building materials. The raw timber lamellae used for the production are sourced from sustainably managed forests and are either PEFC or FSC® C119602 certified.

Production in
State of the Art Facilities.

The KLH elements are produced in our state of the art facilities exclusively on a project by project basis. The thickness and the number of layers of the panels are typically governed by the structural specification and fire resistance requirements. Using CAD/CAM processes and based on the approved fabrication drawings and BIM model, the elements are precisely cut using our state-of-the-art CNC systems. The completed elements are then delivered directly to the construction site on a just-in-time basis, either by articulated lorry or by ship in a container. The site erection is carried out by approved teams of experienced specialist CLT installers, typically with the support of MEWPs and a mobile crane.

Technical Approvals, Certificates and Eco-labels


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Projects from different
categories and countries

Refurbishment & Extensions


3-storey extension to a 100-year-old cottage

Healthcare Buildings

Grote Kreek

The first wooden social building in the Netherlands

Public Buildings


A building that defines the cultural centre of the community.

Refurbishment & Extensions

La Tour Watt

Public Buildings

Bronx Children´s Museum

A museum that brings children closer to nature and urban culture.

Modular construction

Montessori School

A modular timber school building for primary and secondary school children

Educational Buildings

Kinderhaus Kreuzfeld

An architectural masterpiece. Sustainably built with visible KLH® – CLT, it offers children an inspiring environment for education and community.

Modular construction


Careful addition with wooden modules

HotelsModular construction

Twente – Family Homes

Sustainable and solid prefabricated houses

Educational BuildingsRefurbishment & Extensions

HLT Retz

The original building from the 1970s underwent an expansion with the addition of a courtyard building. This new structure seamlessly connects to the existing one, thanks…

We are there for you.

+44 (0) 20 3031 8070
General Business:
Project Enquiries:

KLH UK Limited
23 Jacob Street
London SE1 2BG

We really wanted to say thank you to everyone who has been involved in getting us this far. We have been really excited to see the structure go up and the on-site team have done an amazing job. The CLT looks great.

Mary & Klaus Morris | Blackwood House

I would like to record that I have been very impressed with your work on site and the efficiency of your construction team. The finished product is exactly as expected and was completed ahead of programme. Thank you for the efforts of your team.

David Spooner | Construction Project Manager | Hastings Pier Charity

Mayfield School are delighted with the new buildings. Innovative use of space and light in the atrium areas and other specialist classrooms will enhance the possibilities available to our staff and students.
The Sixth Form is designed not only to give a real feature (Heller-Up staircase), but is also a practical and useable large space which can be used by the whole school for various activities. The new building and external areas have created a real ‘WOW’ factor for our community as a whole.

Allison Greenwood | Deputy Headteacher | Mayfield School

The Mayfield School Project was delivered on time and within budget. It is to an excellent quality of workmanship which surpassed the expectations of the client team and the end user. The building’s design is rational, durable and above all maintainable which will ensure that Mayfield School will continue to provide teaching excellence within the London Borough of Redbridge.

Steve McConaghy | Senior Construction Project Manager| London Borough of Redbridge

I am the HT of a school in the UK which has been constructed using CLT. I am tremendously impressed with the very calm and purposeful learning environment that has been created. The students are so proud of the building and the exposed CLT is a major factor in this as it gives a high-end quality finish not common in schools in the UK. The CLT construction method enabled the building process to be rapid which was a major factor in us moving in on time.

Keir Smith | Head Teacher | William Perkin C of E School

We are completely delighted with the CLT!!! It’s been very exciting seeing our project in the factory and then going-up on site so quickly.
We love the exposed CLT walls and the character it gives the interiors – we can’t wait to move in. I think that the KLH team has been excellent throughout, from first contact, through the quotation stage to shop-drawings and the on-site erection crew – everyone has been very professional and helpful at all times. It has been a pleasure working with you all – I would be very happy to use KLH again in the future.

Ruth Butler | Ruth Butler Architects | Convent Lane

There is a great ambience in occupying a CLT school and it generates interest and a positive atmosphere with students, staff and visitors. Would definitely recommend it to another school.

Head Teacher | City Academy, Norwich

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