For typical garden buildings
1. Select style of roof - Mono-pitch (Pent), Apex or Octagonal
2. Enter dimensions - Length and Width, or Diameter for Octagonal roofs.
Select whether dimensions are feet (ft) or metres (m).
3. Choose style of Shingle - Square Butt or Hexagonal.
Remember Roofing Shingles are not suitable for roofs with a pitch of less than 15°.
Roofs of pitches between 15° and 20° will require an additional Underlay.