
Zaventem · 1930
Water-repellent treatment & coating à Zaventem
Clear or coloured water repellent for porous tiles and facades. In Zaventem it is striking how many enquiries concern what sits under the tiles.
9 km from our depot in Grimbergen
What that changes here
Under trees a water repellent makes little sense if the roof is covered in leaves again within the year. We only apply it after a full clean and a clearing of the surroundings, and we say plainly that it does not replace the annual gutter maintenance.
Zaventem lives with the airport: over the decades many houses have had extra insulation and acoustic work carried out in the roof. That work was not always done carefully, and we regularly find a crushed air gap or a missing vapour barrier.
What we get called out for in Zaventem
In Zaventem it is striking how many enquiries concern what sits under the tiles. Over the years many roofs have had an extra layer of insulation or acoustic work; we get called when damp gets involved. Alongside that, the ordinary work: gutters, roof windows and slopes at the end of their life.
Zaventem porte le code postal 1930 et se situe in the northern periphery of Brussels. Notre équipe part de Grimbergen, à 9 km : nous y planifions le traitement hydrofuge en même temps que les chantiers de Kraainem, Machelen et Wezembeek-Oppem, pour qu’un déplacement serve plusieurs toitures.
- 01Diagnosis
- 02Preparation
- 03Application
- 04Inspection
The full technical detail of this service is on the page Water-repellent treatment & coating.

Two crossed coats on a clean, dry surface, or nothing at all
0492 95 94 94The service in detailAll services in ZaventemCommon questions
Pour un devis, la visite à Zaventem se fixe en général sous quelques jours ouvrés. Nous partons de Grimbergen, à 9 km, et nous groupons nos visites par secteur : si un chantier tourne déjà cette semaine à Kraainem ou Machelen, cela peut aller plus vite. En cas de fuite active, nous venons d’abord bâcher et sécuriser ; le traitement hydrofuge n’est chiffrée qu’ensuite.
Applied properly on a clean, dry surface, allow eight to ten years on a roof and five to eight years on a facade exposed to westerly rain. The first sign of wear is easy to spot: the water no longer beads, it spreads out and darkens the material.
The clear product changes nothing about the appearance: it is the default choice, and the only one allowed in a protected area. The coloured product evens out a covering whose colours have drifted after successive repairs. It does not rescue a covering at the end of its life — it disguises it, and we will tell you so.
The same service nearby
Free quote
Water-repellent treatment & coating à Zaventem
We come out, we go up onto the roof, we photograph. The quotation follows within 24 working hours, item by item.
Not sure about your roof?
The visit costs nothing and the quotation follows within 24 hours. One call is enough to know where you stand.

