When it comes to the final finishing of a concrete slab, power floating will achieve the best possible results. Using a power trowel will create a hard skin on the surface of the concrete, as well as sealing and smoothing it. A power trowel will not level concrete, though. The hard skin on the surface of the slab is the best starting point for a polished concrete floor. On rustic style floors the pattern left behind by the trowel will become visible and add to the unique character of the finished concrete.
Concrete should be correctly mixed, placed and levelled using a float before it is power floated. This will remove as many of the peaks and ridges as possible, as well as sealing pores and small holes in the surface. It is important not to use a power trowel too soon. The slab must be able to take the weight of the power trowel without deforming. Using a trowel too early also risks sealing moisture inside the slab, which could lead to blistering or delamination. Conversely, waiting for too long will mean the concrete is too hard for the power trowel to have any effect.
There are currently three different Husqvarna power trowels available:
The Husqvarna BG245 is a petrol-powered, walk-behind edger trowel. It is designed to deliver a smooth, durable concrete surface. This model is specifically developed for use in confined spaces. It offers the QUICKSTOP clutch for safety. The BG245 comes equipped with a foldable, height adjustable handle, as well as a maintenance stand for increased uptime.
The Husqvarna BG375 is a high capacity concrete power trowel. Powered by a reliable Honda engine it is designed to deal with large areas. The BG375 comes equipped with a foldable and height adjustable handle. The handle is available in two different lengths. It is also supplied with a maintenance stand for increased uptime.
The Husqvarna BG475 is a large, high capacity concrete trowel. Powered by a reliable Honda engine and equipped with a QUICKSTOP clutch for safety. The BG475 is equipped with a foldable and height adjustable handle, as well as a maintenance stand for increased uptime
Husqvarna’s new range of power trowels feature five different options of blade, for either floating or finishing concrete.
Steel Float Blades
Steel float blades are used for floating the slab, the initial stage of the finishing process. They have an almost flat surface, creating suction between the trowel and the concrete. This action moves the concrete from a higher position to a lower position.
Steel Float Discs
An alternative to float blade, float discs have the added advantage of increasing the overall flatness of the slab.
Steel Finishing Blades
After the initial floating has been completed, finishing blades are used. These are angled steeper than float blades. The angle can be adjusted to create the desired finish.
Plastic Finishing Blades
On light reflective surfaces, or coloured surfaces, metal blades can sometimes leave dark marks due to metal deposits. Plastic blades, manufactured from ultra-high molecular weight polyethylene, provide an alternative to achieve a perfect finish on coloured slabs.
These blades are a two-in-one option. The shape of the blades mean that contractors can use one side for floating and the other side for finishing.
Not every type of blade is available for all Husqvarna power trowels. By investing in quality tools, contractors give themselves the best opportunity to create a concrete floor suitable for concrete polishing.