Pressure Injection

Holes, usually between 10-12mm in diameter, are drilled either into the mortar joints or via the bricks or stones and the chemical is injected using a high pressure pump (liquids) or low pressure hand pump or skeleton gun (creams, pastes and gels).

The chemicals spread through the damp masonry, over a period of several months, to join up and form a continuous water repellent layer. This is NOT a solid vapour barrier – it prevents further liquid water from passing through, thus allowing the wall to dry out.

The installation of a damp-proof course (dpc) is only one part of the overall process. Wet and salt contaminated plaster must be removed and replaced as well. Both the dpc and the replastering form part of the dpc system and both are included in any our guarantees.