• Beautiful!

    May I ask what the specs of the exposed timber and flat roof build-up are?

    We are looking to do something very similar with our ground floor extension, would be great to know the ins and outs as we're not using an architect...

  • Neither are we! I've designed it, between me, building control and the builder we've worked out the spec.

    GRP roof membrane
    OSB
    Firings
    OSB
    150mm PIR
    18mm MR MDF
    Joists

    Works out to 0.15 W/m²K. You'll have to find a structural engineer to spec the joists based on span, spacing and load.

About

Avatar for dbr @dbr started