Steel Roof Cladding Minimum Pitch

The lower run is the primary weather seal and should be positioned as close as possible to the edge of the top sheet.

Steel roof cladding minimum pitch.

The minimum slope for lapped non soldered seam metal roofs without applied lap sealant shall be three units vertical in 12 units horizontal 25 percent slope. 2 degrees if there are no penetrations in the concealed fix roof system or 7 5 degrees is there are any vents or penetrations in the roof system. Profiled roof systems are best suited for roof pitches greater than 5 degrees. Trapezoidal profile roof sheets.

The minimum pitch for metal roof shingles and lapped non soldered panels is 3 12. After that the miimum pitch for metal panels depending on the methods used to join the panels. The pitch of a roof is expressed in a ratio of rise over run creating a theoretical triangle with these numbers to illustrate the amount of slope. The profile sheets are typically coated steel but can.

The standard end lap arrangement for trapezoidal steel weather sheets at any roof pitch greater than or equal to 4 is shown in fig 12. The standard of lower pitch actually ranges between 1 12 to 5 12. Orientation roofing and vertically laid cladding. The minimum roof slope allowed by code for any type of roof is in 12 applicable only to coal tar pitch roof systems.

Typically two continuous runs of 6 5 or 6mm diameter butyl sealant strips are used. The pitch is measured in inches of vertical rise per foot of horizontal run and the 5v crimp profile shown above requires a minimum slope of three in twelve or 3 12 3 inches vertically per 12 inches horizontally. Anything above that will require you to put out higher cost because they are already considered as higher pitch. In fact the larger the first number becomes the steeper the slope.

The minimum pitch allowed for metal shingles is a 3 12 ratio whereas metal panelling can be applied down to a 1 12 ratio. Galvanised steel steel with chromadek coating. The minimum slope for lapped non soldered seam metal roofs with applied lap sealant shall be one half unit vertical in 12 units horizontal 4 percent slope. Fixings secret fixed lug system for long sheet lengths.

Resin coated zincalume zincalume with colorbond coating. Concealed fix kliplok roof profile available materials. Panels joined with an applied lap sealant can go as low as 12. The following table provides the minimum required allowable roof slope for each type of roofing material mentioned in the code.

Concealed fix minimum roof pitch.