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British Elm Cladding

Usually supplied as waney-edge boards, green elm looks stunning on rustic properties. Elm cladding boards are supplied wet and with a sawn finish.

Style

Rustic

Profiles

Waney-edge

Source

Scotland

Beware

Instability

British Elm Cladding Features

Elm is now rare but it is undoubtedly the most beautiful timber grown in our native woodlands. Its colour can range from dark purple to light green, with various hues of silver and brown in between. Boards will contain various knots and burr clusters, all creating a stunning finished product when used as cladding.
Elm cladding is traditionally supplied as waney-edge boards that are cut directly from the log. There is nothing standard about elm; lengths, widths and colour all vary widely.
Elm is a particularly unstable wood and prone to distortion so take care not to expose the cladding boards to excessive heat, either before or soon after fitting. Being wet, green elm cladding will shrink after installation and it is very important to follow our fixing guide to avoid problems as the boards dry.

Call us to discuss your project

Specification

Green elm cladding from Vastern Timber

  • British green elm
  • Ulmaceae Ulmus
  • Felled due to disease in Scotland
  • Supplied by Vastern Timber (sales@vastern.co.uk)
  • Grade : BS1186-3 1990 Class 3 / EN942:2007 J50
  • Random lengths 1.5mt – 3.0mt +
  • Available as waney-edge profile
  • Supplied Green / wet
  • Durability EN350-2 slightly Durable. Class 4
  • Supplied uncoated.

Characteristics

Appearance
Boards will range in colour from purple to green with wild irregular grain and regular sound knots.

Weathering
As elm weathers the colour will change to a silver-grey. As the elm dries out the boards will shrink and are likely to distort to some extent resulting in a rustic appearance. Elm does not tend to exude any extractives.

Desired service life
Occasionally wet 30 yrs. Frequently wet 15 yrs. (Elm is classed as non-durable but it does last well as cladding away from ground contact)

Movement class
Large

Resistance to impact
Medium to high

Working properties
Green elm is generally easy to work and takes fixings satisfactorily. Boards are likely to distort as they dry. 

Density
560 – 580 Kg / m3

Extractives
Elm does not contain any reactive extractives such as tannin.

Installation

How to fix
Pre-drill and hand nail with stainless steel nails through the face. We do not recommend nail guns for installation of green elm. Only nail each board once per batten.

For more information, visit the resource centre

Batten type
Treated softwood.

50mm thick x 50mm wide for sawn profiles

Batten spacing
400 – 600mm

Nail type
Stainless steel only. 65mm / 75mm ring shank nails. Trim head stainless steel screws are also suitable.

When to fix
Autumn and winter months. Installing green elm during warm months is not advisable.

Resistance to fixing
High. Pre-drilling recommended.

Profiles

We produce timber cladding to the profile of your choice. View our full range of cladding profiles

We recommend the following profiles for green elm.

 

Disclaimer

While the utmost care has been taken to provide accurate information, Vastern Timber shall not be held responsible for any consequences arising from any errors or omissions on this website nor for any damages resulting from the use of the information.

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