Angular Brown Marks / Patterns on Surfaces

Brown Marks Troubleshooting

FIBREGLASS POOLSHELL

‘Angular’ stains are distinct from the smears or sheets associated with stains caused by water chemistry because they are caused by chemical reactions BEHIND the Fiberglass shell.

LIKELY CAUSES:

  • Poor Construction/workmanship. Fiberglass may be too thin in places resulting in oxide leaching from rusting metal reinforcing behind the shell.
  • Low quality RESIN used when glass was laminated in construction of the shell
  • Age of the shell

MARBLELITE POOLSHELL:

‘Angular’ stains are distinct from the smears or sheets associated with stains caused by water chemistry because they are caused by chemical reactions BEHIND the pool surface.

LIKELY CAUSES:

  • Poor Construction/workmanship. Marblite may be too thin in places/Gunite applied to thinly in places, resulting in oxide leaching from rusting metal reinforcing.
  • ‘Calcium Hardness’ too low for too long, OR pool to acidic for too long resulting in calcium leaching from the Marblite, making it weaker/porous.
  • Age of the shell
Visit one of our stores for more expert advice.

Pool Stuff