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A Revolution In Damp Proofing
The Problem
Whenever rising damp is diagnosed, it is important to have the condition correctly treated, as failure to do so can cause damage and devaluation to any property.

It is not sufficient to simply cover up the problem with a special paint in the hope that the problem will go away. Only by preventing the dampness rising up the wall in the first place can rising dampness be adequately controlled.

Chemical Treatments
Up until now, the most widely employed method of achieving this has been to inject water-repellent fluids into the wall under pressure.

Although this method has proven to be effective, it is known to have a number of disadvantages; for example, it introduces large amounts of liquid carrier into the wall, prolonging the drying out period. The process is also very slow and operator dependent.

The Dryzone System is fast, clean and effective.
Dryzone is a revolutionary new material for the control of rising damp. Dryzone comes in the form of a water-repellent cream packed in a 600ml foil cartridge to minimise environmental impact. The Dryzone cream is introduced by means of a simple applicator gun into a series of holes drilled into the mortar course. Once the Dryzone is installed, it uses the moisture contained in the damp wall to diffuse where it is most needed before curing to form a water-repellent resin.
Fast - Clean - Effective
Dryzone has many advantages over conventional chemical injection systems
Quick to install – no "double drilling", no waiting for fluid to soak in under pressure.
Easy to install - less scope for operator error.
Concentrated formulation (over 60% active ingredient) – does not introduce large volumes of liquid carrier into the wall.
Low hazard – non-caustic, non-flammable not injected under pressure.
Spillage and mess virtually eliminated – no problems with fluid flooding through party walls.
Consistent application rate – easy to estimate the amount of material that will be required.
Does not require an electric DPC pump – can be used in situations where power is not available.
Superior Performance
Dryzone is the result of an extensive in-house research and development programme. This involved the screening and testing of hundreds of potential formulations.

These tests demonstrate that Dryzone offers a higher degree of protection against rising damp than the chemical injection systems that it has now replaced.

Confirmation of Dryzones efficacy is the Agrëment Board Certificate No 97/3363 awarded for application in both stone and brick construction.

Your Guarantee
The Dryzone system is recognised by both the Guarantee Protection Trust (GPT) and the Property Guarantee Association (PGA) as an acceptable method of rising damp treatment. The GPT and PGA are the industry leaders in the provision of independent, long-term guarantee insurance for remedial treatments.

Property Guarantee Administration: 0870 607 1610
Guarantee Protection Trust: 01494 447 049

Alternatively please ask about our 30 year process guarantee, available to all our customers using Dryzone, Dampstop and our injection fluids. Telephone: 01202 601701

The Environment
Dryzone was designed with the environment in mind. Its concentrated formulation means that less product has to be transported to the point of use and minimal packaging means less wastage. The formulation is based on silicones. These are derived from quartz and are used to manufacture a wide variety of products from medical instruments to cosmetics and sealants.

Dryzone is water-based and contains no hydro-carbon solvents.

Dryzone installation instructions:
1.0 The drilling programme.
1.1 Drill hole size, depth and location.
For treatment to be fully effective the correct volume of Dryzone must be introduced. The system requires 12-mm diameter holes to be drilled at horizontal centres no greater than 120 mm. The depth of hole required for various thickness of wall is shown in the table below. For all other walls the depth of 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 base of all perpends of the course selected.
2.0 Preparation
As necessary removing skirting boards and/or render/plaster to identify and expose the appropriate mortar course to be targeted for treatment. Measure the thickness of each wall to be treated. Set the depth gauge of the drill or apply tape to the drill bit in order to identify the correct drilling depth accordingly.

2.1 Solid brick walls
In virtually all cases solid brick walls may be drilled/treated from one side only in a single operation. Drill the selected mortar course at the prescribed centres to the appropriate depth in accordance with 1.1.
2.2 Cavity walls
Cavity walls may be drilled/treated from one side in a single operation, or if preferred each leaf may be treated separately. When undertaking treatment from one side, drill completely through the selected mortar course, allow the drill bit to pass across the cavity and then drill the other leaf of brickwork to a depth of 90 mm. The viscosity of Dryzone is such that it is possible to treat each leaf from a single drilling operation. Always ensure that the cavity is clear before treatment.
2.3 Random stone and rubble infill walls
As far as practically possible follow the mortar course at the appropriate selected level. If the stone is of a porous type e.g. sandstone then there is no reason why this should not be drilled. The variable thickness of stone walls and the possibility of rubble infill dropping and blocking injection holes causes difficulties for any system. Should these difficulties occur it may be necessary to drill to 50% of the walls thickness, from both sides at a corresponding height. Alternatively drill additional holes, adjacent to obstructed holes to ensure that an adequate volume of Dryzone is introduced.
3.0 The injection process and making good.
3.1 Dryzone cartridge preparation

3.2 Dryzone injection.
Insert delivery tube of Dryzone application gun into the full depth of the pre-drilled hole. Squeeze the gun trigger and back fill each hole fully with Dryzone to within one centimetre of the surface. When treating cavity walls from one side make certain that the holes in each leaf are filled. Dispose of used cartridges in a plastic bag in accordance with local
3.3 Making good

All drilled holes should be plugged with sand and cement.

3.4 Replastering

In common with all remedial damp proof course systems the adequate removal and correct replastering of internal salt contaminated plaster is an essential requirement. Use Chemical Building Products Rendermix in a sand and cement backing coat with SBR bonding agent. A plaster skim coat can be used to obtain a smooth finish. Ensure a 25mm gap exists between solid floors and render and plaster finish.

4.0 General information
4.1 Accidental spillage
In the event of any accidental spillage of Dryzone, the spilt material should be wiped up immediately and the wipes placed in a plastic bag and disposed appropriately. Contaminated surfaces should be washed immediately with warm soapy water.
4.2 Health and Safety
Wear nitrile or similar gloves. Avoid contact with skin. Wear suitable eye protection. Full health and safety data sheet is available on request.
4.3 BS 6576: 1985
In all cases the new damp proof course should, as far as practically possible, be installed in accordance with the British Standard Code of practise for ''installation of Chemical Damp Proof Courses''. BS 6576 (1985)
4.4 Caution
Dryzone can sometimes spread through wet plaster.
Dryzone has not been designed for surface application and should not be used for this purpose (Use CBP Super Water Repellent for penetrating damp situations). Some white surface stain may occur around the injection site. Should this occur it will brush off when dry.

Simplicity is the key word with this latest product that has revolutionised the DPC installation market. No pumps or expensive equipment and no waiting for injection.

A water repellent cream, gun applied into 12mm holes drilled at 120 mm intervals which will then diffuse into the wall via the mortar course to form a damp course to BS 6576.


Please see our separate listing for our Dryzone special offers

Please note: The price per tube will be discounted further (in shopping cart) for the same quantities as in the Dryzone Special Offers.
Our best price is £18.00+VAT per cartrdige for 4 boxes (40) or more.

(1 Cartridge will treat approx 3 metres of 9 inch brick wall)

This low cost applicator effectively applies dryzone with a trigger operated gun by back filling each hole then simply plug or point with mortar.

The Dryzone applicator can be cleaned with warm soapy water. After use spray the mechanism with oil before storage.

£49.00+VAT EACH

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ChemBuild Ltd are specialists in Damp Proofing, Damp Treatment, Tanking, Timber Treatment, Building Waterproofing, Structural Waterproofing, Rising Damp, Cellar Waterproofing and Cavity Drainage Membrane in the UK.
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