Calculadora de Área do Telhado — Formula

How to Calculate Roof Area

Formula

Roof Area = Footprint Area × Pitch Factor

Pitch Factor = sqrt(1 + (Rise/12)²)

PitchFactor 4/121.0541 5/121.0833 6/121.1180 8/121.2019 10/121.3017 12/121.4142

This method converts the horizontal footprint into the actual surface area by accounting for the roof slope.

Exemplo Resolvido

A building 50 ft by 30 ft with a 6/12 roof pitch.

  1. Footprint area = 50 × 30 = 1,500 sq ft
  2. Pitch factor = sqrt(1 + (6/12)²) = sqrt(1.25) = 1.1180
  3. Roof area = 1,500 × 1.1180 = 1,677 sq ft
  4. Roofing squares = 1,677 / 100 = 16.8 squares