Coral Proteção Sol & Chuva: Waterproof Paint for Exterior Walls
Cracks under 0.2 mm and structural cracks above that need different treatment before waterproof paint. See the technical profile and crack-repair steps.
Coral Proteção Sol & Chuva Pintura Impermeabilizante forms a flexible rubberized film that prevents and fights infiltration from outside in, cracks, algae and mold on exterior walls of houses, buildings and fences. More than 2,000 colors are available in the Coral color range.
Technical data
Classified under Brazil’s ABNT NBR 11702 standard (09/2019), type 4.5.16. Composition: modified acrylic resin, active and inert pigments, coalescents, thickeners, microbicides, other additives and water. Developed for protection and decoration of exterior surfaces.
Solids by volume 41% to 47%; solids by weight 48% to 58%; viscosity 85 to 120 KU; specific gravity 1.200 to 1.350 g/cm³; VOC 1.5 to 24.0 g/L; flash point above 100°C.
Application
Coverage up to 85 m² per 18 L container (75 m² for 16 L, 17 m² for 3.6 L, 15 m² for 3.2 L), 3 coats as reference, 10% dilution, applied with a low-nap roller, spray gun, brush or trim brush. Touch-dry in 30 minutes, between coats in 4 hours, full cure in 24 hours.
Treating cracks before painting
The treatment depends on the type of opening in the wall:
Hairline crack (shallow, discontinuous opening in the render, up to 0.2 mm wide): clean and brush the surface, removing dust and loose material with a damp cloth, and apply a wall primer before the finish coat.
Structural crack (continuous opening in the render, caused by structural movement, above 0.2 mm wide): open the crack in a V-groove, clean and brush the surface removing dust and loose material, apply a wall primer, fill the crack with a mix of 1 part Coral Proteção Sol & Chuva Pintura Impermeabilizante to 2-3 parts sand, apply one coat of the product over polyester mesh, and finish with a minimum of 3 coats of the product.
General surface preparation
- Freshly applied texture with active water-repellent effect: 2 coats of wall primer before painting.
- New render: wait 30 days to cure; if not possible, apply a wall primer instead.
- Wall with mold: wash with water and bleach in equal parts, wait 6 hours, rinse thoroughly and let dry completely.
- Wall with moisture: fix the moisture source before starting to paint.
- Do not apply on rainy days, at temperatures below 10°C or above 40°C, or when relative humidity is above 85%.
Technical specification
| Field | Specification |
|---|---|
| Line | Coral Proteção Sol & Chuva Pintura Impermeabilizante |
| Classification | ABNT NBR 11702 (09/2019), type 4.5.16 |
| Declared function | Prevents and fights infiltration, cracks, algae and mold |
| VOC | 1.5 to 24.0 g/L |
| Solids by volume | 41% to 47% |
| Coats | 3 |
| Touch-dry | 30 minutes |
| Full cure | 24 hours |
| Coverage | Up to 85 m² per 18 L |
| Colors | More than 2,000 in the Coral color range |
FAQ
Does a small crack need the same treatment as a large one?
No. Shallow, discontinuous cracks up to 0.2 mm take a wall primer directly. Structural cracks above 0.2 mm require V-groove opening, filling with a product-and-sand mix, and polyester mesh reinforcement.
Does waterproof paint fix infiltration without addressing the cause?
The waterproof film protects the surface against new water entry, but the moisture source (leak, clogged gutter, untreated structural crack) needs to be fixed for the protection to hold.
How many coats does a repaired crack need?
A minimum of 3 finish coats over the area already filled and mesh-reinforced, in addition to the primer coat(s) applied before filling.
Does this paint protect against algae and mold too?
Yes. The same film prevents and fights infiltration, cracks, algae and mold.
What is the sand ratio for filling a structural crack?
1 part Coral Proteção Sol & Chuva Pintura Impermeabilizante to 2-3 parts sand, applied over polyester mesh.
What is the coverage of an 18 L container?
Up to 85 m², which can vary depending on surface type and color.
Can I apply it over freshly textured walls?
If the texture still shows an active water-repellent effect, apply 2 coats of wall primer first.
How many colors are available for this line?
More than 2,000 colors in the Coral color range.