Watco Damp Proof Course is a water repellent, highly concentrated, silicone cream packed into a 310ml foil cartridge. It is a thoroughly effective way of treating rising damp while avoiding specialist injection systems.

Watco Damp Proof Course uses capillary action to spread through a wall and create an effective new damp proof course. The advanced formula means that fewer holes need to be drilled in the wall when compared with conventional systems.

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• Features & Benefits
• Coverage Rates
• Hole Depth Specifications
• Surface & Cartridge Preparation
• Application
• Damp-proof Course Injection

Features & Benefits

• High penetration formula for maximum effectiveness
• No high pressure tools or special skills needed
• Easy to handle, low hazard cream

Coverage Rates

Data is approximate. Allow an extra 10% when estimating.

Hole Depth Specifications

Surface & Cartridge Preparation

Remove where necessary skirting boards, render and plaster to expose the mortar course to receive treatment. The wall thickness should now be measured. Set the depth gauge of the drill in order to identify the correct drilling depth.

Use a sharp knife to cut the cartridge before screwing on the nozzle prior to application.

Application

The system requires 12mm diameter holes to be drilled at horizontal centres no more than 120mm apart. The depth of the hole required can be taken from the chart above. For all other wall thicknesses the hole should finish within 40mm of the opposite face. If possible, drill horizontally and directly into the mortar course.

Solid Brick Walls – Walls can generally be drilled/treated from one side only in a single operation. Drill the appropriate mortar course in accordance with the chart above.

Cavity Walls – Cavity walls can be treated in one application and from one side. Alternatively you can treat each leaf of the wall separately. When treating from only one side drill completely through the selected mortar, allowing the drill bit to pass across the cavity into the opposite leaf to a depth of 90mm. Always ensure that the cavity is clear before treatment.

For other types of walls, consult with our technical team on 0113 2455450 (option 2) or send a message to [email protected].

Damp-proof Course Injection

Insert delivery tube to the full depth of the pre-drilled hole, squeeze the trigger and backfill each hole to within one centimetre of the surface. Some white surface staining could occur if overfilled. Should this occur it will brush off when dry. On completion of works, drill holes can be plugged or painted over.