A Dorset-based business consultant with a raft of building conversions under his belt is converting a barn for his family to live in – and loving his first foray into the ACTIS Hybrid range.
Arjen Westerdijk began work on converting the 500 m2 barn in north Dorset in 2024, with the aim of completing the project in early 2026.
Arjen, despite not being a professional builder, has completed several renovations over the years, including converting listed buildings.
He said: “I chose Actis because of its performance credentials, ease of working, and because it offers the complete insulation package. It is quite straightforward to install, even for someone who is not a construction professional.”
Arjen is using a combination of 90mm and 105mm honeycomb-structured Hybris to create a total 195mm thickness in the roof, 105mm Hybris in the walls, insulating vapour control layer H Control Hybrid in the roof and internally in the walls, insulating breather membrane Boost R Hybrid Roof on the roof, and Boost R Hybrid in the walls.
This should see U-values of 0.11W/m2K in the roof and 0.15W/m2K in the walls.
With 500 m2 of accommodation between the main home and the annexe, that is a lot of Actis: 1200 m2 of 105mm Hybris, 700 m2 of 90mm Hybris, 800 m2 of Boost R Hybrid Roof, 600 m2 of Boost R Hybrid and 1400 m2 of H Control Hybrid.
“It’s quick, easy to use, clean and thermally efficient,” added Arjen.

