Remmers Restoration Render & Plasterwork systems offer durable protection against expansive salts. The main function of refurbishment plasters is to safely store salts deposited from continuous moisture penetration, movement and evaporation, preventing damage due to hygroscopic moisture absorption and expansive crystallisation. For successful external restoration and waterproofing, application of a Restoration Render is also recommended on the internal surface of the walls.
The Restoration Render also acts as a water repellent, so that the salts it contains do not reach the surface, even when moisture vapour passes through it. Refurbishment plaster systems for this problem work in two ways:
- They move the evaporation point from the masonry surface to within the plaster layer.
- The salts dissolved in the moisture in the walls can also then safely be deposited and stored within the new refurbishment plaster, without any damage possibilities.
The Render acts as a storage container for the salts. When any moisture diffuses out through the Restoration Render, it leaves the salts that were dissolved in it behind. The salt resistance of Restoration Render systems is so high that one 20 mm thick layer is sufficient, even where the classification is of a “Medium” level of salt content in the water. Remmers refurbishment plasters/ renders can be used without additional waterproofing up to a substrate moisture content of < 40%.
Wateris the main cause of damage to buildings, often with serious consequences. Not only does it affect the prized fabric but also the health of the inhabitants. Buildings are habitats. Dry walls and basements are an indispensable requirement to maintain the value of the property, for a good thermal energy balance and for a healthy indoor climate, free from damp and mould.
Remmers are at the forefront of waterproofing and therefore can support any product claims with many Government and Independant test certificates and approvals including DIN, WTA, BS, BBA and other Regulatory Authorities.