Test first, then buy: EPUTEC safety air guns were also used in the renovation of a listed building.
At the start of the project, it was important for the restorers to test different safety air guns under real conditions. It quickly became clear that purely mechanical work, even with the proven combination of flat jet nozzle and scraper blade, would not deliver the desired result or would take far too long. The plaster was therefore ultimately pre-treated with steam. After spraying, the softened material could be removed gently.
The short video from the site shows three different EXAIR air nozzles as examples:
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More InformationAn unusual enquiry from the trades
Instead of industry, this time our compressed air technology went into a historic building dating from 1893, whose structure and facade are to be preserved as a valuable cultural monument.
The interior paintwork in need of renovation consists of acrylic paint, some of which had already flaked off. Scraping off these large areas bit by bit hardly seemed sensible. The restorers’ idea was therefore to remove the old paint with a powerful air flow.
Narrow, hard-to-reach areas – where safety air guns come into their own
The neo-Baroque building presented the restorers with tasks that were not unfamiliar, but still demanding. Among other things, walls and ceilings with elaborate ornamentation, many mouldings and awkward corners were waiting to be refreshed. Even for an experienced team of five or six specialists, that means months of concentrated work.
As these special craft requirements were new territory for our technical customer advice team, we first had to establish which of our products could prove themselves in practice.
Our colleague then visited the site twice in person:
1. To assess the situation and test standard EXAIR models, which we provided as free loan units.
2. For an exchange of experience, combined with handing over further loan units from our large range of air nozzles.
The right equipment for a demanding job
To take advantage of the safety air guns, an air compressor had to be bought specially: certainly not a decision taken lightly, but a worthwhile investment. Only then was it possible to test the various models thoroughly on site.
The choice finally fell on a nozzle whose air jet simply offers the ideal combination of blowing force and precision. Other buying criteria such as a low noise level or compressed air consumption were hardly relevant for the restorers. In total, six identical safety air guns have been used so far over the course of the work (one loan unit and five additional units).
We thank our customer for their trust and look forward to more unusual projects!
View inside the Old State and City Library in Augsburg at the start of the renovation work (2025). The refurbishment and extension works explicitly take into account the protection of the listed existing building.