The Dryzone Express Replastering System: Dryshield Cream, Drygrip Adhesive, Dryzone Damp-Proofing Cream and Dryrod Damp-Proofing Rods
  • Faster, cleaner & cheaper than sand:cement
  • Less damage to heritage sites than sand:cement
  • Breathable & warmer than sand:cement

For more information call 01403 210204

Hybrid Plasterboard Damp-proofing System

What is the Dryzone Express Replastering System?

Standards & Accreditations
CERTIFICATE 97/3363
Certificate 97/3363
Replastering using the Dryzone Express Replastering method

The Dryzone Express Replastering System combines the power of our patented Dryzone Damp-Proofing Cream with a modern fast-track replastering system. It was created with the following design criteria:

  1. As effective as sand:cement
  2. Faster than sand:cement
  3. Cleaner than sand:cement
  4. Warmer surface than sand:cement
  5. Less damage to heritage sites than sand:cement
  6. Lower applied cost per m2 than sand:cement
  7. Breathable

Why Rethink Replastering?

Dryzone Damp-Proofing Cream revolutionised the treatment of rising damp when it was launched in 2000. It was faster to install, less messy, and provided a more reliable barrier to rising damp than conventional damp-proofing systems.

However, it was still used in conjunction with an industry standard sand:cement replastering system that was slow and expensive to install, was unpopular with homeowners and heritage bodies and could often result in a cold wall surface that could be vulnerable to condensation.

How does The Dryzone Express Replastering System compare to current practices?

  Current Practice The Dryzone Express Replastering System
Locks salts away Yes Yes
Creates a smooth surface Yes Yes
Installation complete within 24 hours No Yes
Redecorate immediately No Yes
Increased thermal resistance No Yes

What does The Dryzone Express Replastering System comprise of?

Dryzone Damp-Proofing Cream / Dryrod Damp-Proofing Rods

Dryzone Damp-Proofing Cream or Dryrod Damp-Proofing Rods

Dryzone Damp‐Proofing Cream and Dryrod Damp‐Proofing Rods offer an effective treatment for rising damp in walls of all types. Both products have been independently tested and proven to form an effective damp‐proof course in existing walls.

  • Stop the source of rising damp
  • Simple and clean application
  • Effective in both new (alkaline) and old (neutral) mortar

Drygrip Adhesive

Drygrip Adhesive 600 ml cartridge

A salt and damp-resistant adhesive glue for fixing plasterboard directly to masonry surfaces. Provides excellent bonding characteristics to the substrate.

  • High moisture resistance
  • Strong resistance to effects of salt on masonry
  • Forms a strong and long-lasting bond between masonry and plasterboard

Dryshield Cream

Dryshield 5 litre tub

A breathable, salt-resistant water-repellent that acts as a primer for Drygrip Adhesive. Applied to walls contaminated with rising damp, the cream greatly weakens the crystal strength of salts forming in or at the masonry surface as damp evaporates. Acts as a primer for Drygrip Adhesive.

  • Breathable and long-lasting formulation
  • Deeply penetrates to form a durable bond with the masonry structure
  • Easy to apply by brush or roller

Application Instructions

Table 1: Drill hole depths for walls of various thicknesses. For all other thicknesses of wall, the depth of the hole should be to within 40 mm of the opposite face.
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
  1. Remove architraves and skirting boards
    Remove any architraves and skirting boards that are in the way of treatment, e.g. if a skirting board is covering some contaminated plaster.
  2. Remove contaminated plaster
    Fully remove all contaminated plaster, exposing the underlying masonry. All loose material should be fully removed by brushing clean.
  3. Drill holes in preparation for a damp-proof course
    To prepare for the installation of a DPC, drill holes to the appropriate depth (refer to Table 1 above) at 120 mm intervals along the lowest accessible mortar course.
  4. Clear debris from the drill holes
    If debris is obstructing the installation of the DPC, re-drill the holes to remove any excess material. If debris continues to obstruct the DPC installation, the Dryzone System Hole Clearing Tool can be used to ensure the hole is completely clear.
  5. Install the damp-proof course
    Proceed with the installation of Dryzone Damp‐Proofing Cream or Dryrod Damp‐Proofing Rods as per normal.
  6. Apply Drybase to the base of the wall
    Prime the lower portion of the wall by applying two coats of Drybase Liquid-Applied DPM to the masonry below the line of the DPC using a large soft brush.
  7. Apply Dryshield to the wall
    Before applying Dryshield, remove any electrical sockets or light fittings on the wall so that the masonry behind them can be treated.

    Apply Dryshield to the wall in a single coat using a large soft brush or roller. Make sure any holes and cracks are filled with cream and that all areas are coated evenly.
  8. Allow Dryshield to soak into the wall
    Allow the Dryshield Cream to soak into the substrate for at least 30 minutes, however, do not leave it for more than 24 hours before fitting the plasterboard with Drygrip Adhesive. Reinstate any removed fittings and socket fixtures before continuing.
  9. Trim plasterboard to fit the wall
    Prepare the plasterboard by measuring and trimming it to fit around any electrical sockets and light fittings on the wall. Check the fit by offering the board up to the wall. A gap of 12 mm should remain between the base of the plasterboard and the floor.
  10. Prepare the Drygrip Adhesive applicator
    Prepare the Drygrip Adhesive by inserting a cartridge into the applicator gun and cutting it open. Screw the nozzle cap onto the applicator gun and trim the tip of the nozzle to give it a 10 mm diameter size hole.

    Tip: If you leave an opened cartridge in the applicator gun, ensure that the nozzle is covered to prevent the material from drying.
  11. Apply Drygrip Adhesive to the back of the plasterboard
    Apply small dabs of Drygrip Adhesive to the reverse side of the plasterboard at regular intervals. Typical consumption should be 1 - 2 tubes per sheet of standard size plasterboard. The thickness of Drygrip Adhesive will allow for some adjustment, permitting the plasterboard to accommodate and cover uneven areas of the wall. When application is finished, remove the nozzle cap and clean the applicator gun.
  12. Fix the plasterboard to the wall
    Offer the board up to the wall and fit into place. Ensure sufficient contact with Drygrip adhesive whilst allowing an air gap (preferably 10 - 12 mm to remain so that the plasterboard is not in contact with the wall. Adjust sections of plasterboard to fit over uneven areas as necessary.
  13. Prop-up the plasterboard
    It is recommended to prop-up the board using 12 mm plastic wedges or 12 mm thick offcuts for a precise fit. At normal temperatures, Drygrip Adhesive should set adequately after 1½ hours. At colder temperatures (i.e. sub 10°C), leave for 2 - 3 hours and check adhesion by gently pressing the plasterboard before further work.
  14. Drill holes 25 mm from corners of plasterboard
    Use the provided Dryzone Express Replastering System drill bit to drill holes at the corners of the plasterboard no closer than 25 mm to the edges.
  15. Fix plasterboard to wall with plugs
    Use Dryzone Express Replastering System Positioning Plugs to ensure an even flat surface across all boards. Tap in Fixing Plugs with a hammer, ensuring the final surface is even.
  16. Apply scrim tape to all board joins
    Apply scrim tape between any plasterboard joins.
  17. Plaster over the plasterboard with a skim coat
    A skim coat of plaster can now be applied. Proceed with additional replastering or decoration as required.
  18. Dry jointing method
    For faster replastering, apply scrim tape as usual, then joint the plasterboards by using the dry jointing method. Afterwards, apply a coat of plasterboard sealer, which can be immediately painted onto once the sealer is touch‐dry.

Dryshield Cream Properties

[1] The coverage rate will vary depending upon the roughness and absorbency of the surface, use as a guide only.

Appearance White
Density 0.9 g/cm3
Size(s) & Packaging 3 litre and 5 litre plastic buckets
Water Solubility / Miscibility Completely miscible at 20°C
Coverage [1] 15 - 20 m2 per 5 litre bucket
9 - 12 m2 per 3 litre bucket
Storage Store in a cool, well ventilated area. Keep container tightly closed. Protect from frost
Shelf Life 12 months

Drygrip Adhesive Properties

Appearance White
Density 1.3 g/cm3
Size(s) & Packaging 600 ml foil sausages
Coverage 1 - 2 Drygrip cartridges per sheet of standard plasterboard
Salt Resistance Pass (In-house tests)
Passage of Salt: Resistance to Chlorides and Sulphates Pass (In-house tests)
Application Temperature 5°C - 35°C
Skin Formation at 23°C and 50% RH 10 minutes
Initial Cure 2 - 3 hours
Full Cure >24 hours
Sag Resistance High
Elongation at Break >250%
Tensile Strength at Break >3 MPa
Movement Accommodation ±12%
Storage Store in a cool, well ventilated area
Shelf Life 12 months
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For more information call 01403 210204