Davco® Render

12 Months form date of manufacture if unopened

Store in dry cool conditions, off ground out of direct sunlight.

Low VOC <1g/L

3-4 Litres or clean potable water per 20kg bag.

• Davco® Render will dry at 25°C and 50% relative humidity in around 6-10 hours depending on the dampness of the substrate. As a general rule however, cement renders should be kept damp for the first 12 hours to ensure proper hydration of the mixture. If drying is too rapid, hydration will not take place and the render will not develop its full strength and will become friable.
• Davco® Render should be allowed a minimum of 7 days to cure.
• Davco® Render should be left for at least 7 days before applying an acrylic texture or topcoat
• Davco® Render is not designed to be left unprotected and should be overcoated. If left for too long in the elements there is real likelihood of “rust looking staining” occurring on the rendered finish, as the fossilised wood particles in the sand leach out water

Note: Setting time is affected by site conditions, climate and could be faster or slower than specified.

20kg bag of Davco Render covers approximately 2.8m2
(based on a single coat with an average thickness of 4mm).

Use the table below as a general guide:

• All surfaces must be installed according to manufacturer’s instructions and relevant Australian Standard(s) and be structurally sound, dry, clean and free from movement, oil, grease, wax, sealers, curing compounds, release agents and any other loose or contaminating material. Thoroughly clean old surfaces, or new surfaces that have been treated, prior to applying the render.
• Surface misalignments and protrusions (splashed mortar, form or shutter marks in off-form concrete) should be trimmed back. Tie wires, nails or steel on the surface must be completely removed. All other metal elements must be corrosion stabilised.

Surface Absorbency

• Test absorption of the substrate by splashing on water. If it stays wet consider the surface to be “normal”. This means it will only require light dampening with clean water prior to a single coat application for up to 6mm thick. Typical substrates are cement blockwork and medium fired bricks.
• An absorbent substrate will absorb water immediately and may take too much moisture from the render mixture. Such a substrate will require soaking with a lot more water prior to application of the render. Alternatively the surface could benefit from a diluted application of Davco Lanko 751 Lankolatex diluting 1 part to 2 parts water.
• • In hot weather, the substrate is best tempered with water to reduce suction and aid in the application of the render.

Note: Low absorption concrete or cement blockwork can offer little surface suction reducing the adhesion. It is best to prime these substrates with Davco Ultraprime before application of Davco Render.

• The water component should be measured into suitable containers or mixing devices and the powder slowly incorporated during mixing. Ensure the water temperature does not exceed 25°C.

Note: Davco Render can be mixed with a variety of mortar mixing devices and applied using the conventional hawk and trowel method, levelling with a screed or rule and finished with wood, plastic or sponge floats.

1. Application by hawk and trowel should occur in two passes, a tight first pass followed by a second levelling pass.
2. Allow for the surface moisture to stabilise then screed with a 1200mm straight edge to a uniform surface. Apply more render to low areas as required.
3. Once the surface is uniformed, float true (level) using a polyurethane float to produce a fine sandy finish. Render droppings or set materials should be discarded, not re-tempered with water. Always terminate the render application above the damp course line. Weep holes should not be filled and reinstate if they happen to be coated over. Never bridge the damp course.

• Davco Render will dry at 25°C and 50% relative humidity in around 6-10 hours depending on the dampness of the substrate. As a general rule however, cement renders should be kept damp for the first 12 hours to ensure proper hydration of the mixture. If drying is too rapid, hydration will not take place and the render will not develop its full strength and will become friable
• Davco Render should be allowed a minimum of 7 days to cure.

• Tools and equipment can be clean with water prior to the render setting