Seeing roller marks in your finished Rust Bullet Concrete Coating? This is why...
Roller marks sure are unsightly! But what causes them? There are a few reasons that can cause roller marks, such as the surface may be too hot or the concrete is extremely porous, etc. However, with Rust Bullet Concrete Coating, roller marks are generally caused from uneven coverage.
When applying Rust Bullet Concrete Coating, coverage must be even through out. Many time, people will try to "stretch" the product. We understand that logic, Rust Bullet is not cheap. Nonetheless, if the coating is not applied correctly, is uneven, or has been "stretched", this may reduce the life and integrity. Using less material than recommended or the concrete may be more porous than what has been determined. The theoretical coverage per gallon is approximately 350- 400 Sq. Ft / gallon is and does not account for loss or waste. If the concrete is porous, or has been ground, the coverage is reduced, hence the range of coverage.
When applying Rust Bullet Concrete Coating with a roller, do small sections at a time, close to a 4x4 area. Back and forth (or a W pattern), with a medium amount of pressure on the roller. We recommend a 3/8" nap roller. Microfiber rollers work great, but do not use a foam roller. When dipping the roller in to the pan with the paint, you don’t want to get too much paint onto the roller, as it will slide during application, opposed to coating. However, the roller surface should be covered with the concrete coating. You will be able to feel sliding versus coating. Multiple, thin even coats are best. Dip the roller into the pan several times to keep a wet edge. As soon as you start to feel the roller drying, cover the roller with more coating. Visually you will also be able to see the coating thinning out on the surface, as the concrete coating transfers to the floor. While rolling each section, watch the previously coated sections for those roller marks. If they start to appear, take the roller, without adding more paint, and very lightly roll over the coated surface without any pressure to even the film out. It’s like they magically disappear.
There can be several reasons roller marks appear, but with Rust Bullet for Concrete, the roller marks generally appear because the coating is not even, from one roll to the next.
Other possibilities can include:
• Application of additional Rust Bullet or re-rolling in areas where the Rust Bullet has partially dried. (Always paint from wet to dry mall sections to keep a wet edge.)
• "Working" (e.g. applying too rapidly or for too long) Rust Bullet too much during application.
• Applying too thin of film.
• Painting a hot surface or in direct sunlight.
• Coating an extremely porous surface.
When applying to your concrete floor, take your time. Don't rush the process. Below is a short video that will help.
If you have any questions about this, please dont hesitate to contact us!