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 Trading and Construction Company
Trading and Construction Company

Insulation and sustainability

Better insulation in building has been shown to be the most efficient way to reduce energy usage in out buildings is the long term. All possible measures to reduce energy can be separated into two categories. Active measures and passive measures.

Active measures are for example solar panels, heat pumps, ventilation systems, blinds, etc. These systems are highly suitable to reduce energy usage by efficiently generating cold, heat or power. However, the additional costs of these systems are usually high and mostly connected to their capacity. A 50 kW heat pump costs about twice as much as a 25 kW one. These installations have an limited lifespan and require maintenance. In general, the installation must be replaced twice or thrice during the lifetime of the building, and with every replacement come more efficient measures than the last.

Passive measures are for example applying extensive insulation, triple glazed windows, compact building (few niches and thermal bridges). These measures are usually not replaced or improved during the lifetime of the building. So, investing in passive measure (like insulation) is much more important than investing in modern techniques.

By providing company and residential buildings with extensive insulation we don’t only save on energy costs during the entire lifespan but can also save on the measures that will be installed.

EXAMPLE: A company building measuring 1000 square meters with an R-value of 3.50 needs a 50 kW heat pump for cooling and heating. A similar building but with R-value of 6.40 and triple gazed windows only needs a 30 kW heat pump. The additional structural costs are  €22,000 ; the savings on the source and heat pump are €12,000. The real additional costs are only €10,000, while the energy costs have been reduced by 40%.

H. Hardeman BV chooses to insulate company buildings with PIRplus insulation. This insulation has been developed in-house and has a couple of important advantages compared to for instance EPS, PUR, rock wool or glass wool.

Compared to EPS, rock wool and glass wool, PIRplus can be constructed much more compact. A 100 mm thick PIRplus panel achieves an R-value of 4.50. To achieve this with the former mentioned insulation materials you would need between 160 and 180 mm of materials. Which would result in higher transport and installation costs, and leave you with less net floorspace.

Compared to EPOS and PUR, PIRplus has the large advantage that it is fire proof; there can be no fire propagation through this insulation, partly because the unique cell structure of PIRplus, it has a carbon grid that protects the underlying foam in case of a fire.

Triple glazing


Hardeman sandwichpanelen PIRplus


Hardeman  panel seperation line (shredder)