Undertile Heating

[the cat]

hi all,

thanks for all the hellos, just joined last nite and already a query!

Am fairly new to the trade and have just landed a ufh job recently. am happy with the installation of the ufh but customer wants to use 18mm exterior ply boards on a concrete substrate instead of insulation board (cost thing). Height wise this works ok but am just not sure on the best way of fixing the ply to the substrate, any ideas?

the cat

 

[GazTech]

hi all,

thanks for all the hellos, just joined last nite and already a query!

Am fairly new to the trade and have just landed a ufh job recently. am happy with the installation of the ufh but customer wants to use 18mm exterior ply boards on a concrete substrate instead of insulation board (cost thing). Height wise this works ok but am just not sure on the best way of fixing the ply to the substrate, any ideas?

the cat

Totally pointless exercise boarding over the concrete with plywood,it wont work much as an insulation.If the customer won't board out in insulation board he obviously isn't bothered about the cost to heat 4 inch or more of concrete,in which case just tile the concrete....he will realise the boards would have been a good investment when he gets his next electric bill....Gaz

 

[the cat]

thanks gaz,

have already pointed out benefits of insulation board but he set on ply

the cat

 

[GazTech]

thanks gaz,

have already pointed out benefits of insulation board but he set on ply

the cat

There is no benefit to be had by facing the floor in plwood,it is not worth the expense of buying it ,nor laying it by whichever method you choose...hope your customer can see sense. Surely Cat he should heed your professional advise !...regards Gaz

 

[grumpygrouter]

There is no benefit to be had by facing the floor in plwood,it is not worth the expense of buying it ,nor laying it by whichever method you choose...hope your customer can see sense. Surely Cat he should heed your professional advise !...regards Gaz

Have to agree with Gaz, Cat. Just tell him he will recoup the cost of the correct board within about 6 months because of the extra cost of heating his foundations if he doesn't go that way. Or, don't do the job! If anything goes wrong if it is done his way, you are the first person he will be whining to!

Grumpy

 

[GazTech]

Have to agree with Gaz, Cat. Just tell him he will recoup the cost of the correct board within about 6 months because of the extra cost of heating his foundations if he doesn't go that way. Or, don't do the job! If anything goes wrong if it is done his way, you are the first person he will be whining to!

Grumpy

By all means do it his way Cat ...but offer no guarantee....Gaz

 

[the cat]

Thanks guys,

have tried already, but will give it another go.

the cat

 

[DHTiling]

totally agree with the lads..ply is waste of time..take some literature with you explaining the benefits of thermal boards..............dave...

 

[the cat]

Thanks guys,

Finally convinced customer insulation is the way forward start Mon.

the cat

 

[GazTech]

Thanks guys,

Finally convinced customer insulation is the way forward start Mon.

the cat

Well done Cat.you know it makes sense.....good luck for Monday

 

[grumpygrouter]

Thanks guys,

Finally convinced customer insulation is the way forward start Mon.

the cat

Good stuff! Keep us informed.

Grumpy

 

[DHTiling]

well done.. cat..keep us informed...dave....