Loose wire UFH

[Ian]

Been fitting a 20 m2 room with this over the past couple of days and the kit came in 2x10 m2 rolls of cable, I would normally use heat mats but this room was such an odd shape that loose wire was the only option. I found it really difficult to gauge how far the cable would go to cover the area as there was metres and metres of it and, unlike a mat, adjustments are nigh on impossible without pulling up loads of the cable. I got there in the end but it was a bit of a chore! Does anyone use the loose wire systems regularly and can offer any tips on not getting left with too much or too little cable? I left the advised distance of 50mm between the wires but it still took quite a lot of faffing about to get it right!

 

[Qwerty]

I usually fit loose wire in small rooms. When I have fitted in a larger area I have laid out the first square metre, taken it up & measured how much wire that sq/m consumed and calculated it accordingly from there. Otherwise I always found it was a total nightmare. Not totally fool-proof, but got me near enough to exact length

 

[Mike]

you can measure each run/line and add about 75mm for each 50mm half circle to start the next run. it's always awkward as each bathroom is different in shape and size

 

[doddy41]

I have found the best way is see how many metres of cable on roll then work out distance between cable runs then mark a grid on floor also after seeing an ufh firm using a glue gun now do the same so much quicker and you can pull cables really tight so they stay in straight lines

 

[Ian]

I have found the best way is see how many metres of cable on roll then work out distance between cable runs then mark a grid on floor also after seeing an ufh firm using a glue gun now do the same so much quicker and you can pull cables really tight so they stay in straight lines

I thought of that but, the roll didn't have a total length on it! Trial and error in the end!

 

[redlee]

I use cable on most bathrooms as i find mats a pain to get around basins/wcs. The firm that supplied my last couple of jobs have a calculation in the instructions which from memory is room sq mtr divided by cable length = the suggested spacing. No use if you dont know cable length but the manufacturers should be able to tell you if its not stated on the reel.

 

[Gazebo]

i sympathise with you is all i can add.

 

[CJ]

Not sure wot you used Bri...........Warm-up do a chart in the instructions that tell you the length of cable dependant on sized unit.

I tend to check the size of cable, and using a gauge stick marked at whatever spacing is needed, mark the floor and double check where the first one ends......and the next starts, but it is a faff if you get loads down and have a load of cable left or not enough.

Also, I find that the tape they supply is too bloody narrow, so I buy wider rolls of tape. (I have used double sided carpet tape before now. I also keep a glue gun in the van for UFH.

I did a job not long ago with 5 seperate ufh rolls of cable.......bloody nightmare that was, and the electrician nearly poo-ed himself when he saw all the cables he had to recess into the wall. Time for me to exit pronto.

Have fun............kind off.

 

[Mike]

Not sure wot you used Bri...........Warm-up do a chart in the instructions that tell you the length of cable dependant on sized unit.

I tend to check the size of cable, and using a gauge stick marked at whatever spacing is needed, mark the floor and double check where the first one ends......and the next starts, but it is a faff if you get loads down and have a load of cable left or not enough.

Also, I find that the tape they supply is too bloody narrow, so I buy wider rolls of tape. (I have used double sided carpet tape before now. I also keep a glue gun in the van for UFH.

I did a job not long ago with 5 seperate ufh rolls of cable.......bloody nightmare that was, and the electrician nearly poo-ed himself when he saw all the cables he had to recess into the wall. Time for me to exit pronto.

Have fun............kind off.

how did you manage 5 rolls, 3 thermostats? (i've read in the warmup instructions maximum 2 rolls of cables per thermostat

 

[CJ]

how did you manage 5 rolls, 3 thermostats? (i've read in the warmup instructions maximum 2 rolls of cables per thermostat

If I remember rightly.............he did have 3 thermo's.
I can't remember wot make these kits where?..............but I advised him to get 2 mats for the main area, but he got a bargain from tinternet???????

I nearly poo-ed MYSELF when I saw all the bloody rolls.