Topic : Trowel Blades Angle
Why is it important to angle the trowel blades?
In power concrete finishing, it is important to set the right angle at the trowel blades to reach the best finish. The drier is the concrete, the bigger must be the angle. So, as it goes, you must increase the angle of the blades.
The reason of doing that is when the angle increases, there is a smaller contact surface in the concrete so the weight of the machine (whether it is a ride-on or walk-behind) is concentrated and push harder. The concrete becomes denser, consequently a lot harder and shinier.
A high angle as its advantages but also its downsides. That is why you must go gradually.
At first, when you are using Float Trowel Blades just like Finishing Pans, you must use them flat to allow the aggregates to take the right place and level the floor at its maximum.
Then, after two or three passes of Float Blades or when you feel that there are no more aggregates on the surface, its time to remove the Floats Blades and set the Finishing Blades at a low angle. With these, you can also pass two of three times increasing the angle every time up to 15°, depending on your machine.
Finally, for the best finish you can use the Plastic Trowel Blades and still, gradually set the angle from 0° up to 15° depending of the power machine you use, to reach the flattest finish.