The following shows how the most common spots or streaks are produced and how best to process the material to avoid these imperfections.

The joint remains visible from the existing tile work

To avoid traces of the tile joints, a few points must be observed:

Attention should be paid to the different absorption drying between the tiles and the joints: if no pre-treatment measures are taken, the resin in the SeaStone microcement will be absorbed differently and there is a risk that a visible joint pattern will develop when dry. The joints are generally hollowed out, lie below the level of the tile, this will cause the SeaStone microcement to collapse during drying and a relief will be created.

Stains from intensive sanding

When sanding the last SeaStone microcement layer, it is preferable to work smoothly, use a rotary sander with grit P120. If the sanding is done carefully, the three types of characteristic stains: circles, outlines and black spots are avoided.

Using a rotary sander prevents unwanted circles from being left behind. The device must be in constant motion without working in the same place for a long time. If the sanding is too intense, the SeaStone microcement from the previous layer will show through, leaving behind some characteristic "curves" that indicate they are coming from the bottom layer. Once the sandpaper wears out, it must be replaced, as the old sandpaper changes from sanding to polishing, leaving black marks on the microcement.

Polishing while the product is still wet

Sanding or polishing the object while it is still wet will leave unattractive marks. If you are not satisfied with the result, it is best to put a new layer over it.

Before Sealing

Ensure that the microcement is not soiled before applying the SeaStone sealer. Even water or, for example, sweat can cause strange stains, such stains could become visible after sealing, so work neatly and cleanly.

Prevent staining or streaking due to drying

To avoid indentations/streaks in floors caused by drying of the material and subsequent cracking, it is recommended to keep a line of fresh microcement so that the work can be extended and replenished.