28/08/2026
Dry Rot St Helens
Cause: Leaking window, blocked sub-floor ventilation, insulation between joists restricting any airflow = DRY ROT CONTAMINATION
A very busy past week with an intensive Dry Rot treatment, where we only had a very limited time to turn the room back to normal.
A few weeks earlier, we were greeted with an inspection hole in the floor, where 2yr old floor joists had rotted.
Further inspection showed the red dry rot spores had spread right across the sub-floor and rot strands had spread up and between the brick joints to the ceiling!
All 3 window lintels were rotten and required replacing too.
Method - Strip back the room, clear debris, remove all visible evidence of dry rot then full biocidal treatment to sub-floor, brick surfaces, mortar joints with several applications over a period of several days.
Luckily we managed to save the ceiling joists and include them as part of the intensive biocidal treatment.
The team really put their effort into this to turn it round in a week! Between 4-6 damp techs there each day, 4 plasterers, then 2 joiners working till late each night.