Cleaning · Green periphery
The north slope going green
Moss is not a cosmetic problem. It is a sponge that holds water against the tile.
The situation
In Meise, Dilbeek and Overijse the houses sit among old trees. The north slope there never dries out completely. Moss presses the damp against the clay or the concrete; in a frost that damp swells and blows the surface off the tile. The loosened moss then washes down into the gutter and blocks the outlet — the water goes over the edge, straight onto the facade.
What we find
- A thick green carpet over the lower half of the north slope
- Gutters that clog with clumps of moss after every gust of wind
- Tiles whose surface is flaking, especially under the patches of moss
- A green streak down the facade below the gutter: the water has been overflowing for months
What we do
- Assess the tiles first: on a weakened tile, high pressure guarantees damage
- Clean by hand or at low pressure, always from the top downwards
- Clear and flush the gutters and downpipes before the job is finished
- Only treat afterwards — and only if the tile can take it
Cleaning without clearing the gutter only moves the problem: all the loosened moss ends up in the downpipe. It is the least spectacular part of the job, and it is what decides whether the result lasts one year or five.
The matching serviceThe other situations
- Zinc workThe concealed box gutter of a terraced houseInvisible from the street, and for that very reason the leak that takes longest to be seen.Read more
- Roof renovationThe 1970s concrete tile at the end of its runThe roof is not broken. It is finished. That is not the same conversation — nor the same quotation.Read more
- Flat roofThe flat roof over the rear extensionAlmost every Belgian house has one. Almost nobody ever goes up onto it.Read more
Free quote
Recognise your own roof?
Describe what you can see. We come and look, we go up, and within 24 working hours you know where you stand.
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.