Renderguard Gold


  • Renderguard Gold is a concentrated admixture for use in sand-cement renders after the installation of a remedial damp-proof course.
  • When a new damp-proof course has been installed it will normally be necessary to hack of salt contaminated plaster and to replaster using a salt-resistant render. Such a render can be formed by using a mixture of sharp sand and cement guaged with diluted Renderguard Gold.
  • Renderguard Gold is BBA approved for use as a replastering additive as part of the Safeguard damp-proofing system.
  • Consideration should also be given to the use of Dryzone Renovation Plasters.
Renderguard Gold 4L & 25L
Renderguard Gold 37.44118.08

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Salt Inhibitor

Renderguard Gold is a concentrated admixture for use in sand-cement renders after the installation of a remedial damp-proof course.

When a new damp-proof course is put in, it’s usually necessary to remove salt-contaminated plaster and replaster with a salt-resistant render. A combination of sharp sand and cement guaged with diluted Renderguard Gold can be used to form such a salt-resistant render.

Renderguard Gold is a high-specification plaster additive that forms an integral part of the Dryzone Damp-proofing System (BBA Certificate Number 97/3363).

After the installation of a remedial DPC (using Dryzone Damp-Proofing Cream, No Hydro Damp Proofing Cream or Dryrod Damp-Proofing Rods) correct re-plastering is of the utmost importance.

Replastering with High Specification Salt Inhibitor

Even though a Damp Proof Course is effective, hygroscopic salts introduced by the rising damp may cause moisture to be attracted to the wall. This causes further dampness and decorative spoiling, giving the impression that the DPC has been unsuccessful.

Re-plastering following the installation of a remedial DPC must perform two functions:

  • It must prevent the passage of residual moisture reaching the decorative surface during the drying process.
  • It must prevent the passage of hygroscopic salts from the underlying masonry to the new decorative surface in order to prevent further spoiling.

When used as an additive to a 3:1 sand-cement render, Renderguard Gold will fulfil these requirements provided that the specification is strictly adhered to.

Where the use of a hard sand/cement render is not desirable, the Dryzone System fast-track replastering system should be considered. In many situations this system can allow rising damp treatment and redecoration to take place the same day.

The use of Vandex Refurbishment Plaster should also be considered.

Renderguard Gold is BBA approved for use as a replastering additive as part of the Dryzone damp-proofing system.

Additional information

Weight N/A
Dimensions N/A
Size: No selection

25L, 4L

Brand: No selection

Renderguard Gold

GTIN: No selection


Part Number: No selection

RG-25L, RG-4L

Manufacture: No selection

Dryzone, Renderguard Gold

Effective Treatment: No selection

Rising Damp

Appearance: No selection

Yellow / gold liquid

Coverage: No selection

1 litre of concentrate is sufficient for 7 m2 of render at 12 mm thickness

Storage: No selection

Store flat and in a cool, dry, well ventilated place. Keep container closed.

Shelf Life: No selection

12 months

Coverage Calculator


Renderguard Gold Preparation

  1. Timber skirtings, architraves etc, should be removed as outlined in the survey report/specification.
  2. Remove plaster back to masonry to the height specified in the survey report/specification. This height should be no less than 1 metre, or 500 mm above the maximum level of visual rising dampness and/or salt contaminated plaster.
  3. Rake out all mortar joints to a depth of 15 mm. This is important in order to help resist the natural shrinkage of new cement renders.
  4. Remove any timber fixing grounds that are present in the masonry.


To create the gauging solution, mix 1 part Dryzone Renderguard Gold with 24 parts water. All water should be fresh, clean and free from oil or other organic contaminants.

First Coat

Prepare 3 parts sand and 1 part cement using the dilute Dryzone Renderguard Gold solution prepared above. The sand should be specified as washed, sharp sand, loam free which satisfies British Standard BS882:1992 “M” Grading.

Use the minimum Dryzone Renderguard Gold gauging solution to ensure a dense coat. As a guide, no more than
8 litres should be used for every 50 kg of dry mix. Compact the resulting mix well into raked out joints, and render to give an overall thickness of 12 mm. Do not over-trowel. When the cement achieves a first set, then scratch to form a key.

Second Coat

The mix is as for the first coat except that water is used instead of Dryzone Renderguard Gold solution. This is applied as a further 12 mm coat, giving a total thickness of 24 mm for both coats. This coat should be applied before
the first coat has finally set in order to obtain a satisfactory adhesion between the two coats. Scratch the surface to form a key. Do not over-trowel.

Finishing Coat

This should consist of a 3 mm layer of gypsum skim finish or similar finish. Other finishes are acceptable provided that they are porous. Do not polish.

No decoration should take place for at least 6 weeks after treatment (or until the wall has dried out).

After this time we recommend the use of Dryzone Mould- Resistant Emulsion Paint. We do not recommend the use of wall paper or high build paints such as enamels.

Datasheet & Downloads

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Standard Plaster Isn’t Salt Resistant


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