Shed / Skillion Roof

1. Tile or Covering Damage

• Cracked, slipped, or missing tiles (if tiled)
• Or splits in membrane (if flat-flow slope)
• Leads to leaks quickly due to direct water flow

2. Drainage Problems

• Water all flows to one edge
• Can overload gutters or cause pooling

3. Ponding Water (Low Slope)

• If slope is too shallow, water may sit on the surface
• Common with felt or rubber roofs

4. Flashing Failure

• Weak points where the roof meets walls or another roof
• Water ingress is common here

5. Edge (Eaves) Damage

• The lower edge takes all the water runoff
• Can suffer wear, rot, or overflow

6. Wind Uplift

• Wind can get under the single slope
• May lift tiles or membranes

7. Timber Rot

• Caused by leaks or poor drainage
• Affects rafters and decking

minor Repairs

• Replace damaged tiles or patch membrane
• Clear gutters and drainage
• Reseal flashing

moderate Repairs

• Replace sections of roofing material
• Improve drainage (larger gutters, better slope)
• Repair edge detailing and flashing

major Repairs

• Replace large areas of covering
• Fix sagging structure
• Replace damaged rafters or decking

When Replacement Is Needed

• Persistent leaks
• Ageing materials (10–30+ years depending on type)
• Poor drainage design
• Structural sagging

Installation Steps

1. 1

   Remove Old Roof

   • Strip tiles or membrane
   • Expose structure
2. 2

   Inspect Structure

   • Check rafters and decking
   • Replace any rotten timber
3. 3

   Set the Slope

   • Ensure correct angle for drainage
   • Adjust firrings if needed
4. 4

   Add Layers

   • Breathable membrane or waterproof layer
   • Battens (for tiles) or deck (for flat systems)
   • Insulation (optional but recommended)
5. 5

   Install Roof Covering

   • Tiles/slate (steeper pitch)
   • Felt, EPDM, or fibreglass (low slope)
6. 6

   Finish Details

   • Flashing where roof meets wall
   • Gutters and drainage system
   • Edge trims installed