roof tile vents.

[deagles]

I have recently had an extension to a kitchen done professionally. The existing cooker hood used to exhaust thru a small chimney protruding thru tiles. The new roofer has replaced this with 2 roof tile vents. The cooker hood has a fairly powerful fan. I am concerned that the 2 roof tile vents may be inadequate to cope with the fan flow rate. Could anyone comment please?

 

[freddiemercurystwin]

Whilst the cooker hood motor may sound like its gonna take off, they tend to do a rubbish job of actually extracting any air, what type of roof vents are we talking about here?

 

[deagles]

They are plain tiles and 2 appear to have small gaps at the bottom. So i assume this is the vent section but am concerned that the vent area looks certainly less than the 3 inch pipe area that feeds out of the hood.
I am trying to send a phot of the tiles here. It's been uploaded to my album but not sure how to present it.
Thanks for the comment anyway.

 

[freddiemercurystwin]

Untitled

• deagles
• 6 May 2011
• 1

I agree, that looks pathetically small. Get him to change it for something more suitable, the roofers will be along to suggest the best vent to use that matches your tiles.

 

[deagles]

Many thanks to freddymercury'stwin for the comments.
deagles

 

[Banannie01]

The extraction rate of the hood will determine the appropriate vent for the job.

http://www.jjroofingsupplies.co.uk/shop/Roof-Ventilation/Inline-Plain-tile-Vent/prod_4867.html

 

[deagles]

Yes, and i have the extraction rate for the fan but i can't find any figure for any of the roof tile vents on the web.

 

[noseall]

You are better off fitting a lead slate or pitched multi-slate, with a short length of 110mm pipe through the roof terminating with a mushroom cowl.

Your extractor hose can then be fitted to the end of the short pipe.

 

[deagles]

My thanks to nose all for comments. Before i start to remove existing set up, can you tell me what the roof vent tile consists of? Does it have any sort of chamber below into which the fan flow pipe is connected, or is it simply a plain tile cocked up a bit to make a hole?

 

[Alastairreid]

A lead slate

http://justlead.co.uk/news/

With a 110mm vent pipe, the flexi pipe from extractor will attach to bottom of of the pipe.

Capped of with this

http://www.buyplumbingonline.co.uk/products/Osma-Soil-Mushroom-Cap-Grey.html

Or tile vent

http://www.harcon.co.uk/slatetileridge/roofline.aspx

 

[deagles]

My question is about the existing roof tile vents. will the existing tiles (photo above) be specifically designed for venting or are they simply normal plain tiles fitted in such a way that they are propped open to provide an opening?

 

[Alastairreid]

Depends on the make of vent tile but you do get adaptor kits.

http://www.harcon.co.uk/slatetileridge/roofline.aspx