Sovereign DPC Injection Cream 380ml

Sovereign DPC Injection Cream 380ml is a highly effective ready-to-use damp-proofing cream based on silane/siloxane technology for installation in masonry structures against rising dampness.

A blend of silane/siloxane cream emulsion that reacts with moisture to form a highly effective hydrophobic barrier against rising damp in masonry structures. Produced as a viscous cream that remains within the drilled hole and does not leave unsightly staining.

Properties

The viscosity allows the operator to use a Bulk Injection Gun to draw off what is required via the blue nozzle supplied straight from the container and pump back any unused material. When the gun is full, switch the end cap and dispense the cream via flexible injector rod. One full pull on the trigger will insert sufficient cream for one 12 mm hole in 4½-inch brick, two pulls of the trigger for 9-inch brick etc.

Preparation/Mixing

Normally the damp proof course is inserted into the mortar bed at perpendicular joints and along the joint at 120 mm (maximum) centres, at a minimum of 150 mm above external ground level, taking into consideration any changes in ground level.

Drill 12 mm holes to a depth of 15-20 mm from the opposite face. It is essential to remove the bore dust before filling the cavity with Sovereign Injection Cream. Solid brick walls can be drilled from one side only to the prescribed depth. Cavity walls can be treated separately by drilling each leaf, at the same height, as for solid construction walls. If required cavity walls may be treated in a single operation by drilling through one leaf, passing through the cavity and drilling into the second leaf to the required depth. The Sovereign Injection Cream can then be inserted into the opposite leaf through the cavity, with the viscosity of the product allowing the first leaf to be treated without the material running out.

Drill holes should be capped off with a plastic plug or a sand cement mix incorporating Sovereign Waterproofer or Sovereign SBR.

The vagaries of random/rubble filled stone walls make them more difficult to treat but it is possible taking the following precautions. Select an appropriate mortar course and following this drilling into the intersections, at a maximum of 120 mm centre, but reducing this where necessary. Where there is a danger of rubble falling and blocking injection holes then the wall should be drilled from both sides, at the same height to half the depth of the wall thickness. However, it is problematical to install the DPC into this type of construction and consideration should be given to applying K11 Grey slurry on the internal wall to a minimum of 1.5 metres above external ground level. Specification Tech H8 for using Sovereign Hey’di K11 Grey for this purpose is available from Sovereign Technical Department Replastering, isolating vertical DPC’s and associated tanking should be installed to relevant Code of Practice or to Sovereign Specification.