Dryzone Damp-Proofing Cream

Dryzone Benefits

Dryzone has a number advantages over conventional chemical injection damp-proofing systems for both the contractor and the householder:

1. Quick to install Up to 3 times faster than standard damp-proofing injection systems.	2. Simple to install Less scope for operator error
3. Concentrated formulation Eliminates the need to introduce large volumes of liquid carrier into the wall. Dryzone is over four times stronger than many competing products.	4. Low-hazard Non-caustic, non-flammable, not injected under pressure.
5. Solvent-free formulation Does not contain white spirit or iso-paraffins.	6. Spillage & mess virtually eliminated No problems with damp-proofing fluid leaking into neighbouring rooms or properties.
7. No electric DPC pump required Can be used in situations where power is not available.	8. Effective Independent tests demonstrate that Dryzone provides a more effective barrier to rising damp than competing products.

Full instructions for installing Dryzone Damp-Proofing Cream can be found in the Dryzone datasheet on the ‘downloads’ tab of this page. For those requiring more detail, a 19-page guide to Rising Damp & its Control can also be downloaded.

Maximised DPC Performance

The Importance of Effective Damp-Proofing

Naturally, homeowners want the most effective products available to be used to treat rising damp in their properties. Creating the best possible barrier to rising damp minimises moisture in the wall, blocks the build-up of ground salts, and reduces heat-loss. For this reason, Dryzone Damp-Proofing Cream has been formulated to form an effective DPC in walls of all types and has been tested under more conditions than any other rising damp treatment on the market.

This is important because no two walls suffering from rising damp are the same. In particular the physical properties of the mortar used to construct walls can vary considerably and this can have a significant influence on the effectiveness of any rising damp treatment.

The effectiveness of Dryzone has been verified under a wide range of test conditions by independent test houses around the world. Test conditions examined include:

Saturated walls (up to 95% saturation)	Low and high alkalinity mortar
High porosity mortar	Low porosity mortar
Cement-based mortar	Lime-based mortar

Dryzone for All

Comparative Test

Treating Walls of Varying Thicknesses With Dryzone

The depth of each drill hole required for various thicknesses of solid wall is shown in the table below. For all other types of wall, the depth of the hole should be to within 40 mm of the opposite face. In all cases the most effective target site is to drill horizontally directly into the mortar course, preferably at the top of all perpends of the selected course.

Wall Thickness

	4½″ (115 mm)	9″ (230 mm)	13½″ (345 mm)	18″ (460 mm)
Depth of Drill Hole	95 mm	210 mm	325 mm	440 mm
Drill Hole Intervals	120 mm	120 mm	120 mm	120 mm

Dryzone Application

Once the Dryzone is installed, it diffuses before curing to form a water-repellent resin. This prevents the damp from rising up the wall.

Replastering

As with all remedial damp-proofing systems, it is necessary to remove and replace any salt-contaminated plaster. The introduction of our hybrid plasterboard method, the Dryzone Express Replastering System has greatly simplified this process. See our page on replastering as part of a rising damp treatment for details of replastering systems available.

For heritage projects, or where replastering needs to be minimised Dryzone Renovation Plasters should be used.

For Rising Damp Treatment

Dryzone is not suitable for application to walls as a treatment for penetrating damp. Dryzone’s sister product, Stormdry Masonry Protection Cream should be used instead.

Product Properties

Appearance	Thick, white cream
Density	0.9 g/cm3
Recipe Type	Water-based
Active Ingredients	Silane and Siloxane
Size(s) & Packaging	5 litre plastic bucket, 600 ml foil sausage and 310 ml mastic cartridge
Number of 600 ml sausages required per 10 m wall [1]	4½″ (115 mm) thick wall, 1.5 9″ (230 mm) thick wall, 3 13½″ (345 mm) thick wall, 5.1 18″ (460 mm) thick wall, 7
Storage	Store flat and in a cool, dry, well ventilated place. Keep container closed.
Shelf Life	18 months in unopened pack

Note: It may be necessary to use more cream per 10 m under certain conditions, e.g. where the mortar course does not form a straight line, or in rubble infill walls.