Control Dampness & Salt Migration
Breathable — Allow Walls to Dry Naturally
BS EN 998-1:2010 Compliant
Dryzone Renovation Plasters are a range of breathable modern plasters that are designed to stop salt migration and aid drying on damp walls. All materials in the plaster range have been scientifically developed and tested to provide excellent resistance to hygroscopic salts whilst providing a highly breathable surface. They have been shown to out-perform both competing renovation plasters and sand/cement renders.
The plasters are most commonly used as part of the Dryzone System for replastering after Dryrod Damp-Proofing Rods have been used to create a remedial DPC against rising damp. They are also ideal for use in other situations where residual damp will be present, such as after treatment for penetrating damp or as part of a flood repair project.
For projects that need to start redecoration as soon as possible, consider the Dryzone Express - a hybrid plasterboard system that can treat walls affected by rising damp and prepare them for redecoration in under 24 hours.
Standard gypsum plasters soak up residual moisture left in the wall. Any salts in the wall migrate to the surface and break down the plaster. This will not only spoil the decorating surface but can also result in the structure of the plaster being permanently weakened.
The porous structure of Dryzone Renovation Plasters allows walls to breathe and dry down naturally without allowing salt and moisture to migrate to the surface or damage the plaster’s structural integrity.
| Appearance | Grey powder |
| Size(s) & Packaging | 20 kg bags |
| Coverage³ | 1 m2 per bag (at 20 mm thickness) |
| Thermal Conductivity | 0.6 W/mK |
| Reaction to Fire | Class A1 |
| Breathability | µ ≤ 15 |
| Bond Strength | ≥ 0.2 N/mm2 |
| Storage | The products must be stored in a dry place |
| Shelf Life | 12 months in unopened packaging |
| Compressive Strength | CS IV |
| Appearance | Off-white powder |
| Size(s) & Packaging | 20 kg bags |
| Coverage² | 1 bag covers 0.8 m2 |
| Thermal Conductivity | 0.4 W/mK |
| Reaction to Fire | Class A1 |
| Breathability | µ ≤ 15 |
| Bond Strength | ≥ 0.1 N/mm2 |
| Storage | The products must be stored in a dry place |
| Shelf Life | 2 years in unopened packaging |
| Compressive Strength | CS II |
| Appearance | White powder |
| Size(s) & Packaging | 20 kg bags |
| Coverage³ | 14m2 per bag (at 1 mm thickness) |
| Breathability | µ ≤ 15 |
| Bond Strength | ≥ 0.1 N/mm2 0.5 N/mm2 pull off test on plaster) |
| Storage | The products must be stored in a dry place |
| Shelf Life | 12 months in unopened packaging |
These instructions are an overview of the application process. Full application instructions for all Dryzone Renovation and Finishing Plasters can be found in the downloads tab.
Treat the rising damp using Dryrod Damp-Proofing Rods.
Apply the first coat of Dryzone plaster as a rough coat at approximately 5 – 10 mm thickness.
Once the rough coat is sufficiently firm, apply the second coat of Dryzone plaster at approximately 10 – 15 mm thickness. The total thickness of both coats combined should be at least 20 mm.
Once the Dryzone renovation plaster coats are sufficiently dry, apply a skim coat of Dryzone Hi-Lime Finishing Plaster and redecorate as per standard decorating procedure.
Treat the rising damp using Dryrod Damp-Proofing Rods.
Apply the first coat of Dryzone plaster as a rough coat at approximately 5 – 10 mm thickness.
Once the rough coat is sufficiently firm, apply the second coat of Dryzone plaster at approximately 10 – 15 mm thickness. The total thickness of both coats combined should be at least 20 mm.
Once the Dryzone renovation plaster coats are sufficiently dry, apply a skim coat of Dryzone Hi-Lime Finishing Plaster and redecorate as per standard decorating procedure.
| 1. | Applied in two coats of different thicknesses. See the ‘Application Information’ section on the technical datasheet for full details. |
| 2. | Applied in two coats of different thicknesses. See the ‘Application Information’ section on the technical datasheet for full details. |
| 3. | Applied in two coats of different thicknesses. See the ‘Application Information’ section on the technical datasheet for full details. |
How can we help?
Get it Done
Subscribe to get information about products and offers.
