This guide is a materials breakdown per square meter of roofing works. All you have to do is to multiply the factors below with your computed total area (in square meter). All in straight-to-the-point calculations.
Metal Roofing Sheets per Square Meter
|Pre-Painted Metal Sheets (Rib/Corrugated Type Long/Short Span)||sq.m.||1.05|
|Tek Screw / J-Bolt w/ Washers||pc||10|
Roofing Gutter per Lineal Meter
|Fabricated Metal Roofing Gutter||m||1|
|12″ x 1″ GI Plain Strap||pc||3|
Ridge, Hip, Valleys, Flashing, Valleys per Lineal Meter
|Ridge, Hip, Valleys, Flashing, Valleys||m||1|
Gutter, roof ridge, hip rolls, flashings and valleys are considered in linear meter since their area (or width as per actual) varies. These data already have wastage factors in it and these are very conservative. Anyhow, you may still include 5%-10% additional expenses of the total material costs for contingency.
Other similar construction data that may be beneficial to you is posted below.
These are shared here for the non-technical people to do their own material computation without the need to ask or hire engineers or quantity surveyors. BUT, we strongly suggest you hire one so your concerns will be attended right away.
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