Preparing facades for renovation using high pressure

Highlights

Environmentally friendly renovation
Prepare substrate for renovation
Remove coating without chemicals

Façades get damaged over time by environmental influences and dirt. This makes them look unsightly, but more seriously, cracks, spalling and holes also cause damage to the building fabric. Professional façade renovation is unavoidable.

View from above of a man working with a flat fan nozzle cleaning and preparing a house façade for renovation.

View from above. On the left of the picture is a DYNAJET 500th high-pressure cleaner, on the right a man in protective clothing working on the façade with a flat-jet nozzle.

A man standing on scaffolding works on the facade of a house with a flat-jet nozzle. In the foreground is a DYNAJET 500th high-pressure cleaner.

A man removes the top layer of paint from a clinker facade with a DYNAJET 500th high-pressure cleaner in preparation for refurbishment.

Man removes the top layer of paint from a clinker facade for renovation using a DYNAJET rotor nozzle.

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Plaster removal for facade renovation with DYNAJET high-pressure cleaner

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Cleaning façades and preparing them for renovation

Before renovating façades, the substrate has to be prepared; this applies whether they’re made of concrete, brick, natural stone, metal, wood, plaster or ETICS (external thermal insulation composite system). DYNAJET high-pressure cleaners gently remove dirt, plaster, varnish and paint from façades using only hot water.

Renovation to preserve building substance
Fast cleaning and preparation of the substrate
Remove plaster, varnish and paint for renovation
Environmentally friendly – chemical-free
Powerful

Paint and plaster removal

DYNAJET’s high-pressure cleaners can remove individual layers of paint and even coatings containing oil – comprehensively and without the use of chemicals, using nothing more than water at up to 95°C. However, if the façade has already sustained damage such as cracks, holes or crumbling plaster, it needs to be removed and the substrate prepared ready for new plaster. DYNAJET high-pressure water units also work without chemicals in these scenarios to thoroughly and quickly remove existing plaster using only pure water under high pressure. This gives the substrate perfect adhesion properties so that the new plaster and coating adhere securely and permanently.

Waste water resulting from paint and plaster removal may contain pollutants that must be disposed of in accordance with local regulations. These must be properly extracted so that they do not enter the sewage system or the soil. For this reason, façades should only be cleaned by qualified experts.

Preparing brick façades for renovation

Brick façades are weather-resistant and last for decades. Even so, brick façades can still suffer damage. It is usually the mortar in the joints that is most vulnerable. This becomes loose and crumbly through environmental influences and age.
This old and loose mortar must first be thoroughly removed before applying the new mortar layer. Traditionally, joints are scraped out. This is time-consuming and expensive, though. Water power can quickly and easily remove mortar from the joint. Dust and loose material are flushed out at the same time so the new mortar can be applied immediately.
Older brick façade buildings are often plastered over, hiding its beautiful, authentic look. DYNAJET high-pressure cleaners can also quickly and gently remove this plaster, revealing the original brick façade.