Renderguard Plaster Additive
Renderguard Gold is a high-specification plaster additive that forms an integral part of the Safeguard Damp-proofing System (BBA Certificate Number 97/3363).
Following the installation of a remedial damp-proof course (using Dryzone damp-proofing cream) correct re-plastering is of the utmost importance. Even though the 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 damp-proof course has not been successful. It is for this reason that re-plastering following the installation of a remedial damp-proof course 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.