We're currently experiencing problems receiving calls to our main number from people on Vodafone. If this affects you, please call 01889 597281, which should work. The technical wizards are working on it.
Covid-19 - 26/11/2020 - Just a note to say iWood Timber will remain open again through this lockdown as we supply the construction industry.
We're currently experiencing a high volume of orders, and with Covid restrictions in place,
we're currently working to a lead time of 14-28 working days
(some products have longer lead times as described in their individual descriptions).
Durability is a measurement of how long specific species of timber would last if a 50mm x 50mm cross section was left in the ground unprotected.
An untreated
Oak beam, which is classed as 'durable', for example, will last 15-25 years depending on environmental conditions.
The following scale of durability was outlined by TRADA, the Timber Research And Development Association.
| Durability |
Class Designation |
Average timber service life |
Example Timber |
| 5 |
Not durable |
less than 5 years |
American Ash |
| 4 |
Slightly durable |
5-10 years |
Siberian Larch |
| 3 |
Moderately durable |
10-15 years |
Douglas Fir |
| 2 |
Durable |
15-25 years |
European Oak |
| 1 |
Very durable |
more than 25 years |
Teak |