Comments for jji-joists and TJI joists and loft conversions

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Answer from our Expert
by: Martin Holmes

Hello Merlot,

The JJ Intelli Roof brings the proven benefits of JJI Joists to both the floor and roof elements of Room in Roof construction.

The system consists of lightweight prefabricated cassettes to form the floor followed by standard timber frame spandrel panels up to ceiling level.

A top hat section is then assembled at ground level and lifted into place on top of the spandrels resulting in a substructure ready to receive the roof cassettes.

The roof cassettes are then lifted into place and fixed to the substructure using proprietary fixings.

Martin Holmes
Builders GB - London

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