Cladding to small outhouse

Discussion in 'Builders' Talk' started by busy builder, Oct 28, 2009.

  1. busy builder

    busy builder New Member

    I have a job to UPVC shiplap clad both sides of the external walls to a small outhouse/toilet (attached to main house).

    I will be inserting 50mm Kingspan to the 75mm (approx) gap and wondered, do I need to put a membrane to outside wall behind the shiplap ?

    many thanks

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