Bulletins are summaries clarifying information in the NZMRM Metal Roof and Wall Cladding Code of Practice.
Available in PDF format, they can be used to support project documentation.
Guidance to minimise cut edge corrosion.
Version 1, 29 February 2024
BSCE01-Cut_Edge_Treatment.pdf
Department of Buiding and Housing advice on cavity battens.
Version 1, 31 May 2024
BV01_Cavity_Batten_Protection.pdf
Clarifying when the use double lapping.
Version 1, 13 June 2024
BDL01_Double_Lapping_Roofing-Sheets.pdf
Recommendation for double laying underlaying when reroofing.
Version 1, 19 March 2024
BU01_Double_laying_of_Underlay_on_Re-Roof.pdf
Clarifying recommendation for clearance between the bottom of the sheet end and tranverse flashings.
Version 1, 23 April 2024
BC01_Clearance_Between_Sheet_Ends_and_Transverse Flashings.pdf
Guidance regarding purlin creasing, print-through, and oil-canning.
Version 1, 27 February 2024
PC01_Purlin_Creasing_or_Print-through.pdf
Clarifying situations when profiled foam closures are required.
BPC01_Profiled_Foam_Closures.pdf
The MRM guidance for not using leaf guards.
BGLG01_Using_Proprietary_Leaf_Guards.pdf
Guidance regarding end laps in wall cladding.
Version 1, 14 August 2024
BEL01-End_Laps_in_Wall_Cladding.pdf
Eaves flashings are traditionally laid between the underlay and the eaves purlin. This is not always necessary, or even desirable.
Version 1, 26 March 2024
BEF01_Position_of_Eaves_Flashing_to_Underlay.pdf
