Timber Specification
Main structure - frames and roof timbers
Selected hardwoods, including Idigbo, are used throughout our conservatories and orangeries, these are sourced from managed plantations in West Africa. Selected sections are used for a combination of strength, durability, machining flexibility and an ability to accept a wide range of finishes. Idigbo is naturally resistant to wood rot and fungal attack and the natural oils present in the timber make it resistant to moisture penetration, making it an ideal timber in the construction of our conservatories and orangeries.
- Moisture content - kiln dried to 12-14%.
- Strength (Young's Modulus is a measure of elasticity; the higher the value the greater the strength) - 9,300 (for comparison Brazilian Mahogany is 8,600 and softwood 7,300).
- Specification conformance - hardwood timber to BS1186*.
- Framework dimensions - standard depth 70mm with 68mm wide mullion and projecting storm proof casements. Where flush walling is specified incorporating shot-in casements (often required for listed buildings) a 95mm deep framework with 68mm mullion is used.
- Roof wind and snow loading - satisfies BS6399*.
Using a matrix of sizes underwritten by our structural engineer every David Salisbury roof is designed to meet current British standards. Structural tie-bars to be included where necessary and if building regulation approval is required full structural calculations can be supplied.
*A summary of the relevant British Standard can be found on www.bsonline.bsi-global.com/
