Tec7 WP7-402 Stop Rising Damp

Tec7 WP7-402 Stop Rising Damp is an effective wall injection cream that forms a horizontal, water-repellent barrier to prevent rising damp. It is suitable for all types of brickwork, including hollow bricks, and can also be used to seal joints in solid natural stone walls. This product is suitable for indoor and outdoor use and is BBRI AAA+ certified.

Benefits of Tec7 WP7-402 Stop Rising Damp

• Forms a durable, water-repellent barrier against rising damp.
• Easy to apply without waste, an application gun or pressure.
• Suitable for walls with a moisture content of up to 95%.
• Suitable for indoor and outdoor use.
• Safe, solvent-free and odourless.
• BBRI AAA+ certified.

Applications 

• Creates an invisible barrier against rising damp.
• Helps prevent salt deposits caused by rising groundwater.

Directions for use

• Remove skirting boards, electrical socket cover plates and all plaster up to 25 cm above any visible damp patches or salt efflorescence.
• Drill 12 mm diameter holes at 10 cm intervals. The drilling depth should be equal to the wall thickness minus 5 cm. For optimal performance, drill into the lowest horizontal mortar joint above the external ground level. Inject cavity walls and walls thicker than 40 cm from both the inside and outside at the same height. For highly porous stone, such as sandstone, ironstone and certain types of limestone, we recommend injecting directly into the stone itself. For natural stone walls, follow the lowest mortar joint. If an existing damp-proof course is present, drill below its level. Drill several holes in a star-shaped pattern at corners to ensure complete impregnation.
• Remove all drilling dust from the holes.
• Screw the injection hose onto the sausage pack. Insert the hose all the way into each drilled hole and fill it while slowly withdrawing the hose. Leave the final centimetre unfilled.
• Seal the holes with Tec7 Filler.

After a few days to several weeks, depending on the moisture content of the wall, a water-repellent barrier approximately 10 cm thick will form across the entire width of the wall. The wall will take longer to dry completely, depending on its thickness, weather conditions and moisture content. If necessary, monitor the drying process with a moisture meter.

If the walls do not dry or stains appear under normal humidity conditions, this may indicate a high salt concentration. This can be addressed by treating the walls with WP7-501 Wall + Basement Waterproof.

Driving rain penetrating the wall can slow down the drying process. This can be addressed by treating the façade with WP7-401 Facade Waterproof.

Wait until the walls are completely dry before applying any finishes. Good ventilation helps speed up the drying process. Wait at least two weeks before using a building dryer. Do not install a false wall, as this can lead to moisture-related problems such as corrosion, wall deterioration, severe mould growth and dry rot.

Specifications

Base: water-based silane emulsion 
Contents: 3 x 600 ml 
Consistency: gel
Colour: white/yellow-white when applied, transparent after penetration
Relative density: 0.9 (± 0.02)
Solid content: approximately 80%
Application temperature: +5 °C to +30 °C
Shelf life: 12 months when stored in a cool, dry place in the original packaging