Penetrating damp treatment work carried out in the attic room of a property in Bright Street, Aberdeen.

Problem

There had been some break down of the roof linings (slates and cement work on the skew) which had allowed moisture to penetrate the supporting granite brickwork. Previous decoration work had been carried out to the walls within which didn’t allowed for moisture control. A thick plaster coating had been applied directly to the brickwork, which resulted in it acting like a sponge, never fully drying out and hence the appearance of damp marks on the surface.

Solution

  • Remove the affected plasterwork and fitted timbers
  • Drill and irrigate the walls with a biocide┬ásolution to prevent and fungal growth within and on the still damp masonry
  • Fit a damp proof membrane to the masonry which prevents any moisture to come through, and allow for airflow and the brickwork to breath
  • Install treated timber framing in front of the membrane. Membrane fitting ‘brick plugs with seals’ were used behind each packer which allowed for a solid fixing for the framing
  • A 12.5mm foiled back plasterboard (Duplex) was finally fitted to the framing, left ready for the clients own plasterer to give it a skim coating

No finishings were required (skirtings etc.) as the client was to have fitted wardrobes installed once the plasterwork was completed and a new hardwood floor laid.

damp patches on plasterwork

Penetrating Damp caused by faulty roof linings. Marks clearly visible at ceiling height

bare wall after being stripped of plaster

Wall after it has been stripped of the plaster, drilled in between the brickwork and brushed down

wall drilled and injected with chemical

Masonry drilled and injected with a biocide solution to prevent any fungal growth

Waterproofing Membrane on wall

Waterproofing membrane installed as a damp proof measure

timber framing installed

Treated timber framing installed in front of the membrane

platerboarded wall

Duplex plasterboard fitted to new framing ready for a skim coat