Neomax® 820

Neomax® 820 is an one-component liquid waterproofing compound copolymer-resin-based and containing solvent. Finished layer with Neomax® 820 forms an elastomeric layer of an incredibly tensile strength, great elongation value, outstanding adhesion and crack bridging properties.
Thanks to the high viscosity, Neomax® 820 is a suitable choice for vertical surfaces.

To form a perfect waterproofing and coating layer for:
Exposed roofs;
Terrace; yard;
Balconies; loggia;
Outside walls;
Green balconies; flower-beds;
Basement floors and walls, pits of lifts;
Chemical tanks; sewage tanks;
Traffic, irrigation and hydropower projects.

As an one-component product, Neomax 820 can be directly applied without any primer coating;
Easy to work with paint brushes, rollers or professional sprayers;
Excellent mechanical properties: High tensile strength and high elongation;
Good adhesion to most substrates and surfaces;
The finished layer forms a seamless membrane without any joint or crack;
Incredible crack-bridging properties;
Excellent waterproofing properties;
Resistant to abrasion and impact;
Resistant to industrial chemical environment;
Resistant to ultraviolet (UV);
Non-toxic if being completely dry;
Suitable for both horizontal and vertical surfaces.

State: Liquid;
Color: Light grey.

08 kg/bucket;
20 kg/bucket;
Or per customer's special request.

Store the product in a dry, cool and well ventilated area;
Do not expose it to direct light;
Neomax® 820 is easily flammable. It is required to be stored away from heat source and open flame.

SHELF LIFE: 12 months since the production date.

First layer: 0.50 kg/m2/layer;
Next layer: 0.75 kg/m2/layer;
At least 2-3 layers are required. More than 3 layers are necessary in some special cases.



Working time: ≤ 30 minutes

Tack free time:  2 ÷ 3 hours

Complete curing time: ≥ 7 days

Tensile strength (ASTM D412): ≥ 3.0 MPa

Elongation at break (ASTM D412): ≥ 600 %

 Shore hardness A (ASTM D2240): 70 ± 10

Adhesion on concrete surface when being applied with a coating layer of Neomax® Primer A10 (ASTM D4541): ≥ 1.5 MPa

Exposure to Ultra-Violet light, 1000 hours (ASTM D4587): No affect

Resistance against H2SO4 10% and NaOH 5% solutions in 7 days: No affect

Resistant to microbial and salt corrosion: Good

Notes: All above technical properties are tested in the standard experiment conditions with temperature of 25oC and moisture of 50%. All tested samples are at the age of 28 days.

Any working surfaces, either new or old, ceramic tiles or normal tiles, etc, shall be grinded by specialized grinding machines before applying waterproofing layers with Neomax® 820. Then use a blower or vacuum cleaner to make the surface completely clean. Do not use water to clean the working surface;
Carefully check the working surface after grinding. Any damages must be repaired by dedicated grout;
Check the moisture content of the working surface to ensure the maximum moisture value less than 8%.

Apply primer layer of Neomax® Primer A10 to prepaired surface of the substrate. Please refer to the updated TDS of Neomax® Primer A10 for more information and instruction;
Waiting for the Neomax® Primer A10 to be dry in at least 24 hours. Applying Neomax® 820 product with a roller, brush or specialized sprayer on the surface to be waterproofed;
Thoroughly stir Neomax® 820 in 2-3 minutes by an electric mixer after opening the bucket to get a homogeneous mixture;
At least 2-3 layers are required. In some special conditions, more than 3 layers are necessary. The first layer should be a little thinner 0.50 kg/m2. And the consumption of the following layers should be 0.75 kg/m2. The working interval between two layers is about 4-5 hours;
In case it is required to protect the Neomax® 820 waterproofing layer with a layer of sand-cement mortar or tile, it is necessary to sprinkle or spray dry sand with a grain size of 0.4 - 0.8 mm on the surface of the upper Neomax® 820 layer immediately after construction. Allow the final coating layer to be completely dry for 72 hours before applying the outer finishing layers.

The perfect mechanical properties of Neomax® 820 are achieved fully after 28 days;
Do not dilute the product with water or any solvents;
Only working in the dry and convenient weather conditions.

Technical Data Sheet

Material Safety Data Sheet

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