Dryzone DPC Damp Proof Injection Cream - 310ml/600ml/5L

Dryzone® Damp-Proofing Cream – DPC injection cream

Dryzone is a high-strength, water-based silicone cream (silane/siloxane) for remedial rising damp treatment. It is injected into holes drilled along a mortar bed, where it spreads along the mortar before curing to form a damp-proof course. No electric DPC pump is needed – just a simple applicator gun – so it can be used where power isn't available, and most walls can be injected from one side only.

Key benefits

• Independently verified performance – certificate 97/3363
• Optimised for a wide range of mortars, including porous and low-alkalinity mortars typical of Victorian buildings
• Suitable for brick, stone and rubble-construction walls
• Easy, clean installation; non-hazardous to the environment
• Established in the market for 20 years

Application in brief

1. Remove damaged, salt-contaminated plaster up to 1m above the DPC line, or 30cm above the highest visible damp line (per BS 6576).
2. Drill 12mm holes into the mortar course at 120mm centres – about 150mm above ground when treating from outside. Hole depth: 95mm (115mm wall), 210mm (230mm), 325mm (345mm), 440mm (460mm).
3. Inject cream to fill each hole while withdrawing the nozzle steadily. Minimum application temperature 5°C.
4. Dryzone typically cures to form a DPC over about 1 month. Re-plaster with a suitable damp-resistant renovation plaster – never gypsum.

Coverage – 600ml foil packs per 10m of wall

115mm wall: 1½ · 230mm: 3½ · 345mm: 5 · 460mm: 7

Coverage – 310ml cartridges per 10m of wall

115mm wall: 3 · 230mm: 6½ · 345mm: 10 · 460mm: 13½

Available as 310ml cartridge, 600ml foil pack and 5 litre bucket. Shelf life 18 months (12 months for the 5 litre bucket); store flat in a cool, dry place.

Download the Dryzone Damp-Proofing Cream technical data sheet (PDF)

Download the Dryzone DPC Cream safety data sheet (PDF)