Standard Roof Pitch Nz

April 2012 nz metal roof and wall cladding code of practice v 2 2.

Standard roof pitch nz.

Of new zealand building code clauses b1 structure b2 durability c3 spread of fire e2 external moisture and f2 hazardous building materials. The importance of roof pitch with wide span sheds. There is no standard universal roof pitch. Pitches of less than 2 12 are considered flat roofs even though they may be very slightly angled.

A common range is given from 1 12 to 4 12 whereas conventional dimensions vary from 4 12 to 9 12 but the steep roofing technique follows slope above 9 12 with additional fasteners. Roof pitches during the 1970s and early 1980s were typically 12 15. The roof pitch can have a dramatic effect on how your new shed looks. In the usa the range of standard pitches is anywhere between 4 12 and 9 12.

Roof pitch one option on which to base selection is roof pitch. For example it was common in the wellington region to have unequal pitched roofs or steeply pitched roofs and shed dormers to give sufficient upstairs headroom. 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. What is the standard pitch for a roof.

The typical roof slope follows specific materials and design techniques to ensure perfect safety from leakage. A current nz joint nzs as standard. Examples of the various roof pitches available. Longer lengths require specific design.

A number of new zealand and joint australian new zealand standards cover roof construction roofing materials and components. Pitches above 9 12 are very highly angled and are designated steep slope roofs. Standard roof pitches are 5 11 15 22 30 45 degrees however we can customise the roof pitch. All roof claddings have a minimum permitted pitch either the minimum recommended by the manufacturer or as set.

Contemporary houses often have flat roofs which shouldn t be completely flat but should be around 1 40. The most commonly used roof pitches fall in a range between 4 12 and 9 12. The minimum roof pitch for corrugate is 8 degrees approx 1 7 and if end lapped 10 degrees approx 1 6. Pitches lower than 4 12 have a slight angle and they are defined as low slope roofs.

New zealand metal roofing manufacturers inc. New zealand metal roofing manufacturers inc. The picture below shows the pitch of a 7 12 roof slope meaning that for 12 of horizontal measurement roof run the vertical measurement roof rise is 7. Minimum roof cladding pitch 4 8 2.

However there were a number of exceptions. This measurement is best done on a bare roof because curled up roofing shingles will impair your measurement. April 2012 nz metal roof and wall cladding code.