Service area
Biobased insulation in Dordrecht
Isoleerbewust insulates homes in Dordrecht with natural, vapour-open materials: hempfibre, cellulose, woodfibre and strawboard. We tailor the construction to the age and detailing of your home, instead of forcing a standard package onto it.
What makes insulating in Dordrecht different
Climate, subsoil, build years and local schemes differ per place. These are the factors we take into account in Dordrecht.
Local point of attention in Dordrecht
Dordrecht is an island between tidal waters: crawl spaces in the old town respond to the tide and many buildings stand on 17th and 18th century timber piles. Before insulating the floor, the state of that foundation and the ground seal matter more than the thickness of the package.
Summer and winter temperature
Around Dordrecht the average daily maximum in July is roughly 22.4 °C and the average January temperature about 4.1 °C, with some 5 tropical days a year. An average Dutch climate with a clear urban heat effect: in dense districts summer night temperatures run several degrees above the countryside. Roof insulation with high heat capacity therefore matters as much in summer as in winter.
Housing stock and build years
The stock in Dordrecht is dominated by middeleeuwse binnenstad plus jaren 60-80 in Sterrenburg en Stadspolders: smalle historische panden en naoorlogse rijwoningen. We match the build-up to that, instead of applying a standard package.
Subsoil and moisture
Dordrecht largely sits on peat with a high groundwater table. Crawl spaces here are often wet; relative humidity under the floor reaches 85-95% in summer. Vapour-open insulation and a well-ventilated, sealed crawl space matter more than a high Rd value alone.
Grants and financing here
Dordrecht offers the Toekomstbestendig Wonen loan via SVn, which also covers foundation repair: relevant because many centre buildings stand on timber piles. The ISDE covers the insulation itself.
Sources: KNMI climate normals 1991-2020, BRO/TNO soil map, CBS housing statistics and the national, provincial and municipal schemes. Values are indicative and vary per neighbourhood; always check current conditions.
Why Isoleerbewust in Dordrecht
- Knowledge of Dutch housing stock. We adapt the build-up to brick cavity walls, wooden floors and tiled roofs typical for the region.
- Vapour-open by default. Our standard details let walls and roofs dry out, instead of trapping moisture.
- Own crew, no chain of subcontractors. Same people from quote to delivery. One point of contact.
- Transparent pricing. Concrete price per m², no vague 'from' prices. The price indicator gives a serious range.
Frequently asked questions about insulating in Dordrecht
We also work in the region
