Service area
Biobased insulation in Haarlem
Isoleerbewust insulates homes in Haarlem 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 Haarlem different
Climate, subsoil, build years and local schemes differ per place. These are the factors we take into account in Haarlem.
Local point of attention in Haarlem
Haarlem's 1880-1930 belt has basements and high ceilings with ornate mouldings. Interior insulation must not ruin that plasterwork, so we often use thin woodfibre boards and take the remaining gains from roof and floor.
Summer and winter temperature
Around Haarlem the average daily maximum in July is roughly 21.5 °C and the average January temperature about 4.4 °C, with some 3 tropical days a year. The sea dampens extremes: summers stay moderate and frost spells are shorter. In exchange, wind and driving rain load the facade hardest here, so draught sealing and an outward-drying build-up pay off more than extra thickness.
Housing stock and build years
The stock in Haarlem is dominated by veel 1880-1930 in de schil rond de binnenstad: herenhuizen en etagewoningen met souterrain. We match the build-up to that, instead of applying a standard package.
Subsoil and moisture
Haarlem largely sits on dune sand just behind the coast. Salty sea wind and driving rain load the facade harder than inland. A vapour-open build-up that can dry outwards prevents moisture from getting trapped behind the insulation.
Grants and financing here
Haarlem has a sustainability loan and owners' association subsidies alongside the ISDE, with separate rules for protected townscapes. Thin interior insulation does not always meet the ISDE Rd requirement; have it checked beforehand.
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 Haarlem
- 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 Haarlem
We also work in the region
