Douglas Fir Timber product Rough Sawn Joinery Greenheart Timber Marine & Civil Engineering Timbers Laminated Timbers Profiled Timbers Thermowood Menu Rough Sawn Joinery Greenheart Timber Marine & Civil Engineering Timbers Laminated Timbers Profiled Timbers Thermowood Douglas Fir Timber Douglas Fir is an ideal constructional timber. It is strong, easy to work and is considered moderately durable when applied in a marine environment. It is available in a range of sizes and UK only stock can be requested.Primary Uses – Bridge timbers, fenders, decking, pilingStrength Class – Up to C24Dimensions – Up to 500 x 500mm. Lengths up to 12 metres