Half-Hip Roof

1. Tile or Slate Damage

• Cracked, loose, or missing tiles
• Often caused by wind hitting the gable/hip junction
• Leads to leaks if ignored

2. Hip Section Problems

• Small hip ridge tiles can loosen
• Mortar may crack or erode
• Water can penetrate at the joints

3. Gable End Cracking

• The lower gable wall can develop cracks
• Movement or wind pressure is usually the cause

4. Junction Weak Points

• Where the hip meets the gable, water can get in
• Flashing and detailing here are critical

5. Roof Leaks

• Common around hip edges, flashing, and ridge line

6. Timber Rot

• Caused by long-term moisture entry
• Affects rafters, battens, and supports

7. Ridge and Mortar Deterioration

• Mortar bedding on ridge/hip tiles breaks down over time

minor Repairs

• Replace damaged or slipped tiles
• Repoint ridge and hip tiles
• Repair flashing at joints
• Seal minor leaks

moderate Repairs

• Replace sections of membrane (felt) or battens
• Repair junction detailing between hip and gable
• Fix small areas of timber damage

major Repairs

• Rebuild part of the hip or gable section
• Replace structural timbers (rafters)
• Large-scale retiling

When Replacement Is Needed

• Roof is ageing (15–20+ years)
• Persistent leaks
• Structural movement or sagging
• Renovation or loft conversion

Installation Steps

1. 1

   Remove Old Materials

   • Strip tiles, battens, and underfelt
2. 2

   Inspect Structure

   • Check rafters and gable wall
   • Replace any rotten timber
3. 3

   Construct the Frame

   • Install rafters
   • Build the hip rafters at the top corners
   • Form the partial gable wall
4. 4

   Add Layers

   • Breathable membrane (waterproof layer)
   • Battens
   • Insulation (optional but recommended)
5. 5

   Install Roof Covering

   • Tiles or slate fixed across all slopes
   • Special hip tiles fitted along angled edges
6. 6

   Finish Details

   • Ridge and hip systems (modern dry systems preferred)
   • Flashing at all junctions
   • Gutters and drainage