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A simple, light-gauge roof framing is a good choice for the job. Once the frame has been built, we'll cover it with marine plywood like we did for the outside face of the walls. On top of the plywood we then lay down a rubber membrane to make it waterproof, and finally fix down the roof boards. #treehouse #diy #tree #house #design #principles #tutorial #roof #rafters #waterproofing
Timber I-joists are engineered structural components that are widely used in the UK, particularly as floor joists. Their high strength-to-weight ratio and economy in use of materials make them popular when designing for long-span and tall structures. TRADA’s new Wood Information Sheet ‘Timber I-joists: applications and design’ provides an overview of their uses and design considerations.