Roof leaks (visible as wet framing or water path stains)

Cause

Cracked, missing or dislodged tiles or shingles, or corroded metal roofing 

Repair

  • if water entry from a leak is suspected, find  and remove the source of the water (use an experienced building surveyor to inspect and report on the possible leak causes as well as consequential damage); have the roof space checked for moisture levels, the extent of moisture damage including mould growth on roof framing and in walls, and condition of insulation
  • replace damaged, missing or dislodged tiles or shingles, or corroded roofing sheets; if problem is extensive, reroof

Cause

Roofing sheets do not have turn-ups to the top end 

Repair

  • if water entry from a leak is suspected, find  and remove the source of the water (use an experienced building surveyor to inspect and report on the possible leak causes as well as consequential damage); have the roof space checked for moisture levels, the extent of moisture damage including mould growth on roof framing and in walls, and condition of insulation
  • lift ridge flashing; turn up roofing; re-fix flashing

Cause

Missing nail heads or waterproofing washers 

Repair

  • if water entry from a leak is suspected, find  and remove the source of the water (use an experienced building surveyor to inspect and report on the possible leak causes as well as consequential damage); have the roof space checked for moisture levels, the extent of moisture damage including mould growth on roof framing and in walls, and condition of insulation
  • replace damaged or missing fixings; if significant, replace roofing 

Cause

Flashing has lifted, corroded or been damaged 

Repair

  • if water entry from a leak is suspected, find  and remove the source of the water (use an experienced building surveyor to inspect and report on the possible leak causes as well as consequential damage); have the roof space checked for moisture levels, the extent of moisture damage including mould growth on roof framing and in walls, and condition of insulation
  • fix flashings or install new flashings

Cause

Corroded, damaged or blocked valley or internal gutters

Repair

  • if water entry from a leak is suspected, find  and remove the source of the water (use an experienced building surveyor to inspect and report on the possible leak causes as well as consequential damage); have the roof space checked for moisture levels, the extent of moisture damage including mould growth on roof framing and in walls, and condition of insulation
  • replace valley or internal gutter; this may require lifting the roofing adjacent to the gutter
  • check internal gutters for blockages