It's all about the right technology - the ideal spraying machines for waterproofing buildings

We have already announced it: This article is about machine technology, true to the motto: "Trowel is good - machine is better". This is especially true for those of you, who want to implement your waterproofing projects as efficiently as possible.

Before we introduce the different mechanical application methods, here is a comparison for a better understanding. The following sample calculation will rapidly make it clear that the mechanical waterproofing process can quickly pay off for you and your company. 

As a reference object, we will take a typical detached house in which the basement has to be waterproofed over an area of 120 m2.

This results in the following calculation:

Manual waterproofing: 
The craftsman needs 12 min/m2 for two work steps (without primer). With calculated labour costs of 45 euros/h, this is 9 euros/m2.

Mechanical waterproofing: 
With machine sealing, the working time is reduced to 2 min/m2 (one minute per pass). This reduces labour costs to 1.50 euros/m2.

This corresponds to a saving of over 80 per cent!

Calculated for a detached house (120 m2), the savings in labour costs amount to 900 euros. 

And in the overall calculation of projects, it becomes even more interesting: If a single employee can complete the basement waterproofing of an entire detached house in a maximum of four hours, and you don't have to tie up three other people for the same area for a day and a half, as a contractor you save on overheads such as travelling or work preparation.

Machine application is also an absolute benefit in terms of occupational safety. This is because your team can apply directly from the excavation without interruption and no longer has to climb ladders to apply the waterproofing. There is also no need to carry individual containers into the excavation pit.

You are free to decide which machine technology you want to use for the mechanical application of fast-setting mineral building waterproofing such as AQUAFIN-RB400 from SCHOMBURG. Depending on the type of pump, AQUAFIN-RB400 can be applied over distances of 15, 20 or even 40 metres. This means that more area can be covered in a very short time and the spray application results in a harmonious surface.

You can apply our mineral-based rapid waterproofing with the following machine technologies:
 
- Peristaltic pump (with compressor)
- Screw pump (with compressor)
- Airless pump

Peristaltic pump

Peristaltic pumps are positive displacement pumps. Peristaltic pumps owe their name to the peristaltic principle. Material delivery is based on the walk principle. A flexible rubber disc pushes the material through the pump housing into the material hose up to the spray lance. A peristaltic pump is very gentle on the material and is therefore also ideal for processing AQUAFIN-RB400. 

Another advantage: With a peristaltic pump you are very flexible. This means that not only flexible polymer-modified thick coatings (FPD) such as AQUAFIN-RB400, but also waterproofing slurries and bitumen waterproofing can be applied by machine. Peristaltic pumps, such as the INOBEAM-M8, can also generally cope with levelling compounds, dispersions and mineral textured renders. The maximum delivery rate is 8 litres/min, the average delivery distance is approx. 10 - 15 metres. For spraying, a powerful compressor is connected to the spray lance and atomises the material.

Screw pump

Screw pumps are the powerhouses for highly viscous materials with a thick filling, coarse grain size or fibres - even spraying plaster is no problem. This makes it one of the most robust pumps with the simplest operation imaginable. Originally, the term screw pump is short for eccentric screw pump. It is also one of the rotating positive displacement pumps. The pumped medium is transported from the upper container via a screw through the hose to the spray lance. An additional compressor ensures the appropriate spray pattern at the spray lance. Compared to peristaltic pumps, screw pumps have significantly more power, but are not as gentle on the material. Screw pumps can handle AQUAFIN-RB400 perfectly.

With a screw pump such as the BMP 6, you can not only process AQUAFIN-RB400, but also apply bitumen waterproofing and sealing slurries, carry out multi-stage injections or apply levelling compounds and dispersions. Screw pumps are also very popular for filling cavities. The delivery rate is approx. 10 litres/min, the range of the pump is approx. 20 metres.

Airless spraying method

The airless spraying method is particularly suitable for the machine application of AQUAFIN-RB400 - especially when larger areas need to be sealed. Although no additional compressors are required for airless spraying machines, AQUAFIN-RB400 can be transported over hose lengths of up to 40 metres using the airless spraying method. This gives you completely new freedom on the construction site and maximises efficiency. 

Airless pumps such as the Graco Dutymax EH 300 DI can also be used flexibly - for bitumen coatings on houses, for mineral building waterproofing (FPD), roof coatings, levelling compounds and for efficient paint application on large-scale projects.

Regardless of which type of pump you choose, every pump is suitable for AQUAFIN-RB400 thanks to the coordinated material viscosity for hand and machine application, which enables a smooth application process.

Optimum waterproofing of basements, walls and foundations is the most important prerequisite for maintaining the value of a building in the long term. Again, machine technology can help to work efficiently and effectively with the right structural waterproofing. More information on long-term safety in the system can be found here.