jonlee

you sholud have no problems diconecting the flue if its not used but if you have a pre cast flue most of it is built directly into the wall with maybe a metal pipe going through the loft that part would be the only bit able to make a noise i would check on the roof to see if you have a loose chimney cowl first as might only be a quick fix

best to use aspestalux fire board can pick it up at your local builders merchant or failing that aluminuim plate and stove rope around the edges

newb saying hi:)