Limestone Emulsion is a water-based silicone water repellent and surface binder for Australian limestone. It is a non-caustic and user-friendly product, which is designed to penetrate deeply into the capillaries of limestone surfaces and render the substrate water repellent and strengthen the surface. This water repellent zone significantly reduces the absorption of water or other water-borne staining materials which are responsible for the bulk of the deterioration in limestone buildings. Unlike other sealers, the treatment with Limestone Emulsion will not significantly change the appearance and the vapour permeability of the limestone substrate.
Limestone Emulsion is recommended as a water repellent sealer for permeable Australian limestone. It may also be suitable for other types of limestone substrates. Some of the important features of Limestone Emulsion include:
As masonry materials vary significantly, a test MUST be carried out prior to application to determine the suitability of this product for the purpose.
Please read this product data sheet thoroughly for the correct application and safe handling. Do not apply if rain or extreme weather conditions are expected. The surface to be treated should be dry, firm and free from grime, oil and any previous coatings/sealers. If necessary, the surface should be washed with a suitable detergent in water and allowed to dry. All cracks should be filled with suitable grout materials and allowed to cure before application. A test prior to application is strongly recommended to determine the number of coats required and suitable consumption rate.
The consumption of Limestone Emulsion varies significantly depending on the permeability of the substrate. It may be of the order of 0.5-2 m2 per litre per coat or could be out of this range significantly.
The initial surface water repellency will develop gradually after the surface is dry. Full curing may take 24 hours or up to 7 days. Avoid heavy traffic for at least 24 hours. The equipment should be washed immediately in water after application.
Pilot testing and quality control
Due to the variation of building materials, it is strongly recommended that a pilot test on a small area on site must be conducted prior to application to determine the suitability of this product for the purpose.
Limestone Emulsion penetrates into the capillaries and renders the surface water repellent while still leaving most of the capillaries open to allow water vapour to pass through. It reduces water absorption by capillary action. However, it has a limited resistance to water penetration particularly under prolonged contact or hydrostatic pressure. Therefore, in some cases where the substrate is very permeable or there is extreme wind driven rain, resistance to water penetration or water-borne staining may not be adequate. This product should not be diluted with water or any other dilutant.
Limestone Emulsion is a water-based, non-caustic and user-friendly product which is classified as a non-hazardous material according to the criteria of Worksafe Australia. However, as with all chemical products, good industrial hygiene procedures should be followed when using this product. The product should be stored in closed containers in a cool dry place away from any fire sources. The product has a shelf life of 12 months in a sealed container stored at a temperature below 25oC.
Use under sufficient ventilation!
Keep out of reach of children!
Limestone Emulsion is available in 20, 200 and 1,000 litre plastic containers.