Technical Info from T&F Joinery

one of the county's leading joinery companies based from its Ludham workshop in the heart of the Norfolk Broads

Timber and Structure

Selected timber sections are used for a combination of strength, durability, machining flexibility and an ability to accept a wide range of finishes. The hardwood timber is naturally resistant to wood rot and fungal attack and the natural oils present in the timber make it resistant to moisture penetration.

Moisture content

Kiln dried to 12-14%

Strength

Strength (Young’s Modulus is a measure of elasticity; the higher the value the greater the strength) – 9300 (for comparison Brazilian Mahogany is 8600 and softwood 7300)

Specification conformance

Hardwood 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

(where required) – satisfies BS6399