Major ICF Development Feltham

Check out the construction of a residential development incorporating the Thermohouse low energy ICF system in Feltham, West London:

The development, which is being constructed by Syntec Projects Ltd, a specialist ICF contractor, is to be one of the first affordable rental developments to utilise ICF in the UK. The development, which is being supported by the Borough of Hounslow, is comprised of the following:

Phase 1: A terrace of four houses: 3 x 2 storey, 1 x 3 storey

Phase 2: Apartment block: 4 storey over basement, 20 units

Syntect Projects Ltd. has based their decision to use Thermohouse on two factors: (1) speed of construction, and (2) air-tightness. Ultimately, it was vital that the development be constructed efficiently and provide high performing dwellings for its occupiers.

Phase 1 – Terraced Houses


Stage 1:

Excavation, piling and ring beam poured and cured





Stage 2:

ICF deadwork erected, rebar in place, ready for concrete pour





ICF Rising Walls

Stage 3:

DPC laid, concrete sub-floor poured, rising walls started.





                   Stage 4:

All external and internal walls erected and poured.

Gable walls cut and poured.

Ridge beams and wall plates installed, ready for roof panels.



Stage 5

Brick slips applied to the facade of the terrace.







Phase 2 – Apartment Block

Stage 1:

ICF walls built on top of cast-in-situ concrete basement.






Stage 2:

Low energy floor panels fitted in position, rebar and mesh installed and screed poured on top.

First floor walls built on top of cured floor.

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