Make life easy, search the forum.

Discuss Flagstones over UFH in the Specialist Tile -Stone, Porcelain, Glass area at TilersForums. USA and UK Tiling Forum

Reaction score
1
Please checkout the following advertisement.
Hi all,

not sure if this is really the right place for this, but here goes...

I'm renovating a small (75m²) cottage. I installed underfloor heating and the concrete slab wa poured over a year ago, so I'm guessing it's good and dry at this stage:)

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 Indian limestone calibrated to 20mm.

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'm assuming I would have to garde them to keep things level-ish? would this affect the heating?


So, I guess my question are:

Is there any limit on the thickness/depth of Flags that can be used? (I realise responsiveness becomes an issue the thicker you go)

and

Is there any problem with flags of varying thickness?

Thanks
 
Last edited:

Rae

-
Reaction score
16
Youve goneout the way to fit water ufh ,choose a thinner slab,you will have ro leave the heating on all the time ,as the time it would take to get warm on 20 or 40 mm plus https://www.tilersforums.com/forums/tile-adhesive/ ,
 

Bopster

TF
Esteemed
Reaction score
185
How thick is the screed over the ufh. Generally 50-70mm.
Another 40mm will warm but as mentioned take time, however it'll keep warm for even longer for to thermal mass so once up to temp wouldnt be any more to run than normal
 

Reply to Flagstones over UFH in the Specialist Tile -Stone, Porcelain, Glass area at TilersForums.com

Or checkout our tile training advice or the Tile Standards

This website is hosted and managed by www.untoldmedia.co.uk. Creating content since 2001.
Please visit our sponsor websites, they keep the forum free to use!

New Tiling Questions

UK Tiling Forum Stats

Threads
66,600
Messages
866,704
Members
9,511
Latest member
mmcdon47
Top
AdBlock Detected

We get it, advertisements are annoying!

Sure, ad-blocking software does a great job at blocking ads, but it also blocks useful features of our website. For the best site experience please disable your AdBlocker.

I've Disabled AdBlock