cutting hole in corrugated roof

[andrew299]

hello all,
I am thinking of changing the kitchen and one thing that I would like to add is an extractor fan.
The current kitchen is built in an extension on the house with a sloping corrugated plastic roof. The construction of the roof is a double layer with a frosted flat plastic layer on the inside and a corrugated plastic layer on the outside. I cannot site the extractor fan so that the duct goes through a wall as I have a terrace house. The wall at the back of the kitchen is also not possible.
So that leaves me with wondering how to cut and seal a hole in a corrugated plastic roof.
Or would it be easy to replace the roof? The roof is supported by wooden beams about 6feet apart in one direction and 4 feet in the other.
Thanks
Andrew

 

[Deluks]

Wierd setup you have there. I would've thought that plastic (polycarbonate?) roofing doesn't meet standards for a proper kitchen. Is this a new kitchen that's been installed in a lean to addition without regs?

Anyway, making a hole in the roof, especially a corrugated one is asking for trouble (leaks) Why can't you go through the back wall. It must be possible to run some ducting along a side wall or something.

 

[andrew299]

Thanks for the reply Deluks, the kitchen was installed in the seventies I think. All the house in my road are the same so I assume that it was OK at the time. Some have changed them to glass over the years but it has not caused me any problems since I have been in the house.
Any way I have solved the problem - use an extractor that recycles the air through a filter.

Thanks again
Andrew

 

[Deluks]

Thanks for the reply Deluks, the kitchen was installed in the seventies I think. All the house in my road are the same so I assume that it was OK at the time. Some have changed them to glass over the years but it has not caused me any problems since I have been in the house.
Any way I have solved the problem - use an extractor that recycles the air through a filter.

Thanks again
Andrew

That'll do (don't forget to change the filters ) only thing is it won't provide ventilation. do you have any air vents anywhere or anything? I can imagine when cooking that steam will condensate on the underside of the roof.