Howe Dell

Howe Dell School

Kingspan Kooltherm K15 contributes to a top BREEAM rating for a trailblazing primary school in Hatfield, Hertfordshire.

The Project

Kingspan Kooltherm K15 has contributed to a top BREEAM rating for a trailblazing primary school in Hatfield, Hertfordshire.

The £8.1m Howe Dell School, commissioned by Hertfordshire County Council, designed by Capita Architecture with project and construction managed by Mace is being described as Hertfordshire’s first ‘eco-school’ with a curriculum to match, including an ‘Eco Squad’ of pupils who promote learning about environmental issues enthusiastically across the school.

Kingspan Kooltherm K15 Rainscreen Board
Capita Architecture
BCL Timber Contractors
The school was selected as one of 8 projects in a pilot DfES BREEAM for Schools Initiative, achieving an excellent rating – the only building to do so.

The cladding package value (including Kingspan insulation) was approximately £500,000; and the Carbon Trust gave a grant of £244,000 to Hertfordshire County Council towards the cost of the revolutionary ‘Interseasonal Heat Transfer’ system beneath the playground.

Kingspan Kooltherm K15 was specified and installed beneath a prefabricated wooden system by BCL Timber Projects.
Howe Dell is another landmark Eco project we at BCL have been involved in, and like many of our previous projects, we used Kingspan insulation as part of our pre-fabricated timber cladding system. Kingspan products are often a natural choice given their presence in the market. As expected, the product fulfilled its function within the building and was easy to handle.

Being the largest pre-fabricator of timber cladding in the UK we are mostly tasked with providing a complete envelope system, including insulation. We would naturally use Kingspan as its quality and reliability are known within the industry.

Nick Barrett - BCL
With a thermal conductivity as low as 0.020 W/mK, Kingspan Kooltherm K15 will make a huge contribution to minimising the school’s operational energy use.

Kingspan Kooltherm K15 is a premium performance insulation board designed for use behind rainscreen cladding systems and is lightweight and easy to handle and install. It is unaffected by air infiltration; and composite foil facings on both sides of the board act as a barrier to moisture penetration, adding to the board’s durability. When correctly applied, Kingspan Kooltherm K15 has an indefinite lifespan.

Howe Dell is the first building in the world to feature Interseasonal Heat Transfer from ICAX, a heating and cooling system that uses the school playground to harvest solar energy.

The building has a raft of eco-features ambitiously designed to achieve amongst other goals the status of ‘zero carbon school’. These include: a sedum roof, a water collection system and a dedicated wind turbine capable of supplying the national grid.

Related products

Kingspan Insulation Ltd

For queries relating to insulation boards, cavity closers or membranes.





General enquiries: 01544 388 601

Technical advice: 01544 387 382