Specifying timber species in marine and freshwater construction

Historically, the UK construction industry has favoured a narrow range of tried and tested hardwood timbers for use in marine and freshwater applications.
Over-reliance on a small number of species is not compatible within sustainable forest management, as certain species are being over-exploited. This is likely to reduce the security of supply and cause inflationary price pressures in the future.
This Wood Information Sheet provides guidance on the technical properties of a number of lesser-used species of hardwoods that may be used for marine and freshwater construction.
Contents:
- Background
- The advantages and disadvantages of using timber in marine and freshwater environments
- Biological risks
- Non-biological risks
- Timber sourcing issues
- Specifying and using timber in marine and freshwater environments
- Structural design
- Promoting the lesser-used species.
This Wood Information Sheet was revised in June 2019. Minor amendments have been made to the 'Timber sourcing' and 'Promoting lesser-used species' sections.
Suggested Reading
New research identifies additional species for use in marine and freshwater construction
This report summarises the main findings of a collaborative research project funded by the Environment Agency and TRADA, which aimed to identify additional species for use in marine and freshwater construction.
The research examined the performance of 18 lesser-used species (LUS) tropical hardwoods, benchmarked against greenheart and ekki. Five...
01/01/2010 | Other Technical Guidance
Assessment of the durability and engineering properties of lesser-known hardwood timber species for use in marine and freshwater construction
This collaborative research project between TRADA, the Environment Agency and HR Wallingford investigates the strength properties of five LUS - cupuiba, angelim, okan, tali and eveuss as an alternative to the frequently used Greenheart and Ekki.
In addition, this research report identifies marine borer and abrasion resistance of a range...
01/01/2010 | Other Technical Guidance
Timber species
Wood is a natural material, and is sourced from many different tree species. Each species produces timber which varies in colour, density and performance properties, all of which will influence that species' suitability for a particular job.
Tree species are broadly divided into two main groups: softwood and hardwood....
01/01/2012 | Choose and Use