Hi all,
I'm not sure if I'm in the right place at all with this, but here goes.....
I'm renovating an old rubble walled cottage (1800s)..so most of the work carried out with Lime Mortar etc.
I'd like to finish it with a flagstone floor, but my plumber is a little worried about the heat penetrating through the thickness of the flags...while he's installed plenty of ufh systems, he has no experience in dealing with flagstones so I think he's being overly cautious...but I'd really like some more opinions on this.
The first flagstones I'm looking at are limestone calibrated to 20mm from India
I also however have the option of locally sourced slate flags, but these vary in thickness from about 20mm to 40mm. These would be irregular shaped, but I could work them a little and the cottage is extremely 'rustic' anyway so I would be happy to use these.
The second option would be my preferred choice...I would love to get them locally, plus I like the random look of them...and also the price is definitely right! (tight budget!) but there are 2 issues I'm worried about with these flags:
1. If the plumber is worried about the 20mm...I'm afraid he'd freak completely if I mentioned the 40mm
2. If the flags are of varying thickness, I would have to grade them accordingly to keep things level-ish.. would this affect the heating?
So, I guess my question are:
Is there any limit on the thickness which can be used? (I realise that responsiveness is an issue)
and
Is there any problem with flags of varying thickness?
Thanks
I'm not sure if I'm in the right place at all with this, but here goes.....
I'm renovating an old rubble walled cottage (1800s)..so most of the work carried out with Lime Mortar etc.
I'd like to finish it with a flagstone floor, but my plumber is a little worried about the heat penetrating through the thickness of the flags...while he's installed plenty of ufh systems, he has no experience in dealing with flagstones so I think he's being overly cautious...but I'd really like some more opinions on this.
The first flagstones I'm looking at are limestone calibrated to 20mm from India
I also however have the option of locally sourced slate flags, but these vary in thickness from about 20mm to 40mm. These would be irregular shaped, but I could work them a little and the cottage is extremely 'rustic' anyway so I would be happy to use these.
The second option would be my preferred choice...I would love to get them locally, plus I like the random look of them...and also the price is definitely right! (tight budget!) but there are 2 issues I'm worried about with these flags:
1. If the plumber is worried about the 20mm...I'm afraid he'd freak completely if I mentioned the 40mm
2. If the flags are of varying thickness, I would have to grade them accordingly to keep things level-ish.. would this affect the heating?
So, I guess my question are:
Is there any limit on the thickness which can be used? (I realise that responsiveness is an issue)
and
Is there any problem with flags of varying thickness?
Thanks
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