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Hi hope someone can help basically i am installing a flue for an extractor fan and need to extract via the floor into the downstairs utility room i am new to DIY so please excuse any of my "silly" questions


my question is

I have started in a location that is situated out of plan eye sight in the corner of the upstairs floor, once i removed a small section of the floorboards i have encountered what i can only describe as like solid thick SLATE slats ... which would block any extractor hose going threw the floor levels .....

a few inches away upstairs to the floorboard i removed is an old fire place .. i was wondering are these flint slats their to give support to the upstairs fireplace/chimney breast ?

im not sure how far these slats are likely to run, any ideas why they are there or how many are likely to be there ?

i want to avoid these slats without digging up all the floorboards upstairs
to find out where they run if possible :roll:

UPDATE: I HAVE BEEN CALLING WHAT I FOUND FLINT THAT WAS A MISTAKE I SHOULD OF SAID SLATE

It is more than likely that the slates were part of the original fireplace.
They will rest on some 2 X 2 frame, just remove them.
Before you do, check that with them removed you will have access to the outside. It may be best to pick another place to install your fan.

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