Other than the obvious big firms on the web, are any of you installers of, or, anyone know of installers, around the Bradford/Leeds area? or even Yorkshire/Lancashire?

Thanks

Jon,

We are building an earth shelter, so green roof. Engineer spec is for wriggly/wrinkly tin roof with concrete pour on top.

Design of the roof will depend on which product is used, our structural engineer has advised that the composite roof slab is to be designed by the decking manufacturer and then go through Building Control.

Its only a small job, hoped we could source it with a local company rather than big national one.

What about Omnia of something like that...?

J

tpermanent formwork (ie pc units or holorib (aka wriggly tin??)) all need lots of propping and lots of preparation before topping off. i could list all the separate operations if anyone is interested.

also pc units take a lot of transport energy compared to insitu concrete. and much more craneage required.

these options seem quicker on paper, but temporary formwork - ie plywood and aluminium beams and props is just as fast in reality. it is also easier to optimise the design to make the slab as slim as possible. prestressed concrete is also not as complicated as it sounds and gives a very good result.

a green roof will need waterproofing on top regardless of the option chosen. (waterproof concrete could be an option, but usually requires a minimum thickness to get the guarantee)

i do know a small contractor (based in manchester) who might be able to help you. welding shear studs onto holorib maybe a bit more than he is used to though.

my opinions above are based on 20 years as a site engineer for reinforced concrete contractors. please feel free to contact me for any further advice.