![]() If the substrate is too dry, dampen down the surface prior to coating. Each coat must be scratched to give a good mechanical key before further coats are applied. Dub out deep holes with Duro Natural and key.ī) Base coat and floating coats: Apply an undercoat of Duro Natural between 9 to 12 mm thick directly to a prepared substrate. Lightly spray each coat with water if it is hot or the product is drying too quickly.Ī) Stipple and dubbing coats (optional): Apply Lime Green Natural Stipple coat on dense impervious backgrounds (see separate datasheet). Prevent all coats from drying out too rapidly. Reworking: up to 8 hours Further coats: after 2 to 7 days, once the coat has stiffened / hardened, but is still "green". Please consult lime green for more information. The number of coats is dependent on the surface to which the render is applied, the exposure of the building and the finish required. Mix for up to 10 min in mixer, or use a mechanical whisk for 2-3mins, stand for 10 minutes, then mix once more before application. Add only 4-5 litres of clean water to each 25 kg sack. Ensure downspouts are not leaking on to the substrate.Īdd the whole bag of pre-mix into drum mixer carefully avoiding creating excessive dust. Ensure Masonry is not waterproofed or painted. Surface Preparation Remove dust, surface contaminants and loose or friable existing render/plaster. This does not include any allowance for wastage. Duro Natural is ideal for most old buildings or newer eco-friendly construction where a pure lime render or plaster is desired.Īpproximately 1.7kg per mm of thickness over 1m². ![]() Duro Natural does not contain PVA or acrylic, cement or PFA or any other materials containing toxins or which reduce breathability. The following coats should be applied while the Duro is still “green”.Duro Natural is a breathable, elastic and salt resistant undercoat. Leave the Duro to set and harden for between 2 and 7 days, depending on the temperature. For the final undercoat before finishing, apply a light key using a devil float. Once ruled off and ready, key the coat using a render comb in a regular wavy pattern if further coats of Duro are being applied. Apply in coats of around 10 to 15 mm, or thicker if dubbing out. Use Duro in temperatures of 5☌ and rising or 30☌ and falling. How to apply Duro as a lime plaster "scratch" or levelling coat For low - porosity brick or stone or difficult backgrounds such as highly absorbent surfaces, the range of Lime Green Silic8 Primers are suitable. Before application, dampen the masonr y with clean water to control suction. Painted or waterproof surfaces will need removing or special treatment before applying Duro, seek further advice. Where necessary, repair and consolidate masonry and structural defects beforehand. Remove dust, surface contamination, dirt or lichen and loose or friable existing coatings. How to prepare a wall for lime plastering with Duro at 10 mm thick, 1 bag will cover 1½ m 2.Over 1m 2 each 1 mm of thickness requires approximately 1.7 Kg How much Duro plaster basecoat will you need? ![]() If you have wooden laths you will need Ultraand if you want to replace plaster with an internal insulation system have a look at Warmshell Internal. ![]() What backgrounds can be lime plastered with a layer of Duro undercoat?ĭuro is used for traditional masonry, like solid brick or stone walls. Just add water and used to build out the levels of the wall true and straight before applying a lime plaster finish coat, or to level the walls before applying Warmshell Woodfibre Boards. This product is a premixed lime undercoat for masonry.
0 Comments
Leave a Reply. |