Facade water repellent
in Overijse
On the building stock of Overijse — post-war villas on sloping ground, old greenhouses, complex roofs with multiple pitches — facade water repellent calls for an adapted method. Cleaning, then water-repellent impregnation of the brick or render: water beads off instead of soaking in, the facade dries and stays clean for longer.
BeforeAfter
The context in Overijse
Why here in particular
What changes in Overijse is the context: post-war villas on sloping ground, old greenhouses, complex roofs with multiple pitches. The tree cover keeps the roofs damp and the gutters fill twice a year rather than once.
A late-nineteenth-century Belgian brick literally drinks the driving rain from the west. The water passes through, comes out as saltpetre inside, and in winter it blows the surface apart.
- Quote
- Priced after a site visit, free of charge and with no obligation.
- Duration
- 2 to 4 days depending on the surface area and the weather.
- Call-out
- Included in Overijse and neighbouring municipalities
How it runs
How the job runs
The same protocol everywhere, adapted to what the visit reveals on site. Nothing is decided from the pavement.
- Documented absorption test
- Low-pressure cleaning
- Anti-moss treatment
- Spot repointing
- Colourless water-repellent treatment with a beading effect
- Protection of window frames and surroundings
Diagnosis
Absorption test, condition of the joints, mapping the cracks.
Cleaning
Low pressure, plus anti-moss treatment where the facade is green.
Repairs
Repointing where the joints have eroded and treatment of the hairline cracks. A water repellent over an open joint is pointless.
Drying
48 to 72 h. That is the part we do not shorten.
Impregnation
Applied to saturation, from the bottom up, in two crossing passes.
Frequently asked questions
Facade water repellent in Overijse
The questions we get asked most often before this kind of job.
Can the facade still breathe?
Yes, that is the whole point of an impregnation: it blocks liquid water and lets vapour through. A film-forming paint, by contrast, traps the damp inside.
How long does it last?
8 to 12 years on brick, a little less on render that is very exposed.
Does that solve a damp problem indoors?
If the damp comes from driving rain, largely yes. If it rises from the ground by capillary action, no: that is a different treatment and we say so.
Do you come out to Overijse with no extra call-out charge?
Yes. Overijse is one of our 17 municipalities: the call-out is included in the quote, not added at the bottom of the invoice.
Other work in Overijse
While we are on site
Combining two jobs in one visit brings the invoice down. We suggest it when it makes sense, never to pad the quote.
Facade water repellent in the neighbouring municipalities
All our work in Overijse · Everything about facade water repellent
Facade water repellent in Overijse: let’s talk about it
On-site visit, detailed costing within 48 working hours, with no obligation on your part.