Minimum Pitch For Corrugated Iron Roof Nz

To a minimum slope of 1 5 for roofs and 1 slope for decking but with conditions see table 1.

Minimum pitch for corrugated iron roof nz.

Longer lengths require specific design. That is why all roofing manufacturers recommend the 5 degree pitch as the minimum slope and they will not provide any guarantees if it is installed flatter than this. Minimum pitch the minimum roof pitch for corrugate is 8 degrees approx 1 7 and if end lapped 10 degrees approx 1 6. No steps except into gutters.

New zealand metal roofing manufacturers inc. The minimum pitch is typically 3 12 meaning the roof should rise 3 inches for every 12 inches of horizontal foot. New zealand metal roofing manufacturers inc. The standard of lower pitch actually ranges between 1 12 to 5 12.

The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code. Anything above that will require you to put out higher cost because they are already considered as higher pitch. Minimum roof pitch for roof claddings. April 2012 nz metal roof and wall cladding code of.

When a combination of sheets provide a run of in excess of 40 metres and up to 60 metres the roof pitch should be increased by 1 degree. 8 after deflection for sheet lengths of 30m. 9 after deflection for sheet lengths exceeding 30m but less than 50m. Roofing type profile style minimum pitch conditions e2 as1 compliant membrane roofing and decking epdm butyl roof 1 5 roofs 4 epdm butyl deck 1 0 deck maximum area 40 m2.

Just like other metal roofs the minimum pitch for a corrugated metal roof largely depends on the profile of the roof. In most occasions a pitch of three in twelve is preferred but this should also take into consideration the manufacturer s recommendations as well the unique condition of the corrugated metal roof. The minimum pitch for corrugate is. April 2012 nz metal roof and wall cladding code of practice v 2 2.

Corrugated roofing is a great material on traditional pitched roofs but it has severe limitations when the pitch gets below 5 degrees.