
Kraainem · 1950
Roof insulation à Kraainem
Insulation of pitched roofs and lofts, from the inside or as sarking. Kraainem stands out for its materials.
10 km from our depot in Grimbergen
What that changes here
On the periphery a lot of owners insulate the roof themselves, and that is where we find the most damage: insulation pushed up against the roofing underlay, no air gap at all, a vapour barrier full of gaps. We put the ventilation right first, the insulation after.
Kraainem is a small, densely built municipality on the periphery, with many interwar and 1950s houses. Slates and small clay tiles are more common here than elsewhere on the periphery, and they call for a different approach from the concrete tile of the housing estates.
What we get called out for in Kraainem
Kraainem stands out for its materials. Where the rest of the periphery carries concrete tile, we still find a lot of natural slate and small interwar clay tiles. They call for a different hand and different fixings, and pressure washing is rarely a good idea here.
Kraainem porte le code postal 1950 et se situe in the eastern periphery of Brussels. Notre équipe part de Grimbergen, à 10 km : nous y planifions l’isolation de toiture en même temps que les chantiers de Wezembeek-Oppem, Zaventem et Woluwe-Saint-Lambert, pour qu’un déplacement serve plusieurs toitures.
- 01Visit
- 02Preparation
- 03Fitting
- 04Inspection
The full technical detail of this service is on the page Roof insulation.

A ventilated air gap, otherwise the insulation damages the roof structure
0492 95 94 94The service in detailAll services in KraainemCommon questions
Pour un devis, la visite à Kraainem se fixe en général sous quelques jours ouvrés. Nous partons de Grimbergen, à 10 km, et nous groupons nos visites par secteur : si un chantier tourne déjà cette semaine à Wezembeek-Oppem ou Zaventem, cela peut aller plus vite. En cas de fuite active, nous venons d’abord bâcher et sécuriser ; l’isolation de toiture n’est chiffrée qu’ensuite.
For a pitched roof, aim for 18 to 24 cm of mineral wool or PIR depending on the material, to meet the requirements in force. In an existing roof structure the space between rafters is limited: you then add a second layer under the rafters, crossing the joints.
In most cases, yes: the insulation is fitted from the inside. Sarking — insulation laid over the roof structure, under the tiles — is only justified if the roof has to be redone anyway. In that case it is the best solution, and the question comes up before the tiles are ordered.
The same service nearby
Free quote
Roof insulation à Kraainem
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.

