National Timber Systems (NTS)

National Timber Group has launched a new division that will support the UK’s housebuilding and construction industries.



The new brand, National Timber Systems, will supply trussed rafters, gable and party spandrels, engineered joists, floor and roof cassettes, as well as the NYTROOF, an innovative rapid fit ‘room in the roof’ system. 


National Timber Systems (NTS) – Arnold Laver’s Engineered Products Division – offers design, manufacture and technical support on every aspect of timber engineering for both domestic and commercial properties.


The entire manufacturing process of NTS products is carefully controlled and monitored from the selection and treatment of raw materials, through precision machining and fabrication, to prompt delivery on site anywhere in the UK. We can even undertake installation if required, so we really do provide a total quality service. Our Roof Trusses are designed via the latest MITEK Pamir design software ensuring high class delivery throughout the project.

Our Services

Engineered Products

We can supply Engineered Products, including structural timber machined to your specific dimensions and fire or pressure treated according to planned usage.

More about Engineered Products >

Floor Systems

Our structurally engineered joists are the result of extensive research into engineered timber technology reducing the problems typically associated with timber floors.

Floor Systems Information >

Timber Treatment & Services

Arnold Laver can offer a range of industrially applied preservative and fire retardant timber pre-treatments for timbers being used either indoors or outdoors.

Timber Treatment Services Information >


NTS has an established partnership with Steico and are a key distributor of the STEICO Engineered Joist system. We can supply the following products, including Steico I Joist system and Mitek Software Roof Truss System. Plus our own LTS brand trusses and infills.

Spandrel Panels

Spandrel panels are supplied as fire and sound rated timber frame panels, made to the profile of the roof. They remove the need to build up masonry party walls into the roof space and can therefore save weeks on a build programme. Supplied with built-in lifting straps they are installed alongside the trusses to form a fully compliant dividing wall.

Manufactured from a range of materials including plywood, OSB and plasterboard, the panels can be filled with solid-slab insulation and fire-treated as required. They are clad using the Fermacell panel.

Engineered Products and the Environment

At Arnold Laver, environmental issues are important to us. We are pleased to say that our engineered products meet our high standards in this area.

When producing the engineered joists, an efficient process and reduced wastage mean that only 1/3 of the quantity of trees is harvested when compared to traditional timber methods.

The joist manufacturing process is also environmentally efficient, minimising water usage and recycling waste wood. The timber species used in the manufacturing process is abundantly available and sustainable, being self-rejuvenating and extremely fast growing, thus absorbing more CO2 greenhouse gases in the process.

Our suppliers implement regular ‘forest environmental quality’ reviews to ensure that all sources of timber are managed to acceptable environmental standards.

Contact NTS

There are three factories nationwide producing all of NTS’s engineered products. They are based at:

  • Bristol
  • Newcastle
  • Sheffield Mosborough

Key Sales Contacts

North – Bill Hornby – 0191 428 7479

Central – Anthony Robinson – 0114 276 4755

South – David McHugh – 0117 312 1164


Key Points

  • 10 designers situated around the country
  • 3 Technical sales staff – one in each region
  • Our NTS offer complimented by a range of Timber, Sheet Materials and Joinery products supplied out of one of our 16 depots situated around the UK


Branches Nationwide

Branches nationwide, local serivce, collection or delivery options - Arnold Laver delivers

Same Day Click and Collect

Arnold Laver makes it easy to get your essential project materials - just a few clicks away

National Timber Group Logo

Part of the UK's largest independent timber group, Arnold Laver offers high-quality timber at scale