im not too clued up on underfloor heating but this seems very cheap?
they seem to sellf quite a few other different heating /cooling systems, well worth a look :yes:
Not sure about 100 watt mats, most on the market seem to be 160/200 watt.
They are cheap, but not sure about output.
Got mine from here http://www.hot-floors.com/160_watt_underfloor_heating_mats.php
Couldn't beat the price and a good quality mat too!
I'd stick to recommended brands when it comes to underfloor heating. The cost you save going to the odd 'cheaper' brand is neglegable when it comes to repairing some floors. A good brand will have a lifetime guarantee!
Checkout www.wetdecs.co.uk who sell Varme underfloor heating systems.