My boat was built in 2002, it had an old Morso, which was knackered and we are completely refitting the interior, including a new Morso and flue.
BS 8511:2010 has a requirement for a substantial hearth, where it needs to project at least 225mm in front of the stove, which is far too much for our NB.
So...
Question 1 - do we strictly need to comply with BS8511:2010 for installing a new stove in our old NB, which had a stove fitted previously, which did not comply with aforementioned BS?
Question 2 - if we install a smaller hearth will this affect the BSS? (I cannot see from the "BSS Examination Checking Procedures for Privately Owned and Managed Vessels" document, where this would be a problem.
Question 3 - we are proposing to have a single skin solid steel flue installed, as the existing, is this a problem?
Question 4 - to suit existing penetrations, we are installing a 5" flue, instead of 6" (outlet size on the Morso)