FAQS
Cable Ties
Are your Nylon cable ties suitable for exterior use? Are they UV stabalised?
All of our BLACK nylon cable ties are UV stabalised and are suitable for use outdoors in the sun. Our Natural and coloured Nylon cable ties are not UV stabalised so these should only be used outside if you only need them for a short period of time (banners at concerts etc).
Please note that whilst the Black ties are UV stabalised and will withstand exposure to the sun, over time even UV stablised products can deteriorate. If you need a cable tie which will last indefinitely in the Australian sun we would recommend the 316 grade stainless steel cable ties.
What is the tensile strength of the cable ties?
| Material | Width | Tensile Strength |
| Nylon | 2.5mm | 8Kg |
| Nylon | 3.6mm | 18Kg |
| Nylon | 4.8mm | 22Kg |
| Nylon | 7.6mm | 55Kg |
| Nylon | 9.0mm | 79Kg |
| Nylon | 12.7mm | 114Kg |
| Stainless Steel | 4.6mm | 59Kg |
| Stainless Steel | 7.9mm | 122Kg |
| Stainless Steel | 12.00mm | 181kg |
Under Floor Heating
Can ThermaSheet boards be placed above under floor heating?
No. The boards are insulation board therefore they should go below the heating cable otherwise they will block the heat and prevent it warming your room. You may also damage the under floor heating cable over time.
Can I install under floor heating in my shower?
If you have a hobless (brick surround) shower which is at the same level as the rest of your floor (a small 1-3cm lip is fine) and the shower is not a pre-fabricated plastic/fibreglass base, then yes, theoretically you can install floor heating into your shower area.
When considering putting floor heating into your shower area, you should consider whether there are any complexities such as strip drain position, glass shower screen fixings, which are positioned such that the floor heating could accidentally be damaged when they are being installed. We advise that if your shower will have either of these, ensure you stay well clear of these areas when installing your floor heating.
Another consideration is whether you need it in the shower. If you only have a small shower area which when the water is flowing gets covered in water, then as your water will be hot, there is very little benefit putting floor heating in. If you have a large walk in shower and the water is only at one end of it, then yes it may be worth continuing your floor heating into the shower area so that you don't have a cold area.
What size under floor heating kit do I need for my room?
When selecting an under floor heating kit for your room there are a number of considerations:
For Bathrooms...
Measure the overall dimensions of the room and calculate the square meterage. From this deduct the square meterage of the following things
- Bath
- Toilet
- Floor mounted vanity
- Shower (unless you have a need to go into the shower)
- Any other area where you cannot walk (bidet etc)
Effectively you want to get a square meterage of the part of the room where you can walk. Using the table below you can see what size kit you require.
| Free Floor Area | Mat Size Required | Power (Watts) | Linear length (m) |
| 1.2 to 1.7 sqm | 1 sqm | 200W | 0.5 x 2m |
| 1.8 to 2.2 sqm | 1.5 sqm | 300W | 0.5 x 3m |
| 2.3 to 2.7 sqm | 2 sqm | 400W | 0.5 x 4m |
| 2.8 to 3.2 sqm | 2.5 sqm | 500W | 0.5 x 5m |
| 3.3 to 3.7 sqm | 3 sqm | 600W | 0.5 x 6m |
| 3.8 to 4.2 sqm | 3.5 sqm | 700W | 0.5 x 7m |
| 4.3 to 4.7 sqm | 4 sqm | 800W | 0.5 x 8m |
| 4.8 to 5.2 sqm | 4.5 sqm | 900W | 0.5 x 9m |
| 5.3 to 5.7 sqm | 5 sqm | 1000W | 0.5 x 10m |
| 5.8 to 6.2 sqm | 5.5 sqm | 1100W | 0.5 x 11m |
| 6.3 to 7.4 sqm | 6 sqm | 1200W | 0.5 x 12m |
| 7.5 to 8.6 sqm | 7 sqm | 1400W | 0.5 x 14m |
| 8.7 to 10 sqm | 8 sqm | 1600W | 0.5 x 16m |
Alternatively, if you have Excel visit the Radiant Australia website and download their calculator.
For Living Areas....
Measure the dimensions of the room and calculate the overall area, but deduct 100mm from each measurement as you only up to 100mm away from the walls. Depending on the room, you may want to make further deductions based on the function of that room.
For example.
In a kitchen, you would definately deduct all cabinetry, island benches, fridge recesses, etc.
In a lounge area, you may want to deduct items such as sofas, tv cabinets, coffee tables, etc. Only deduct these if they are always going to remain in the same positions.
In a bedroom, you may want to deduct your bed.
Once you have a final square meterage for the areas you want to install floor heating minus the deducations, you can use the following table to calculate the kit size you need.
| Floor Area | Mat Size Required | Power (Watts) | Linear length (m) |
| 6.0 to 7.9 sqm | 6 sqm | 900W | 0.5 X 12m |
| 8.0 to 8.9 sqm | 7 sqm | 1050W | 0.5 x 14m |
| 9.0 to 9.9 sqm | 8 sqm | 1200W | 0.5 x 16m |
| 10.0 to 10.9 sqm | 9 sqm | 1350W | 0.5 x 18m |
| 11.0 to 11.9 sqml | 10 sqm | 1500W | 0.5 x 20m |
| 12.0 to 12.9 sqm | 11 sqm | 1650W | 0.5 x 22m |
| 13.0 to 13.9 sqm | 12 sqm | 1800W | 0.5 x 24m |
| 14.0 to 14.9 sqm | 13 sqm | 1950W | 0.5 x 12m + 0.5 x 14m |
| 15.0 to 15.9 sqm | 14 sqm | 2100W | 0.5 x 14m + 0.5 x 14m |
| 16.0 to 16.9 sqm | 15 sqm | 2250W | 0.5 x 14m + 0.5 x 16m |
| 17.0 to 17.9 sqm | 16 sqm | 2400W | 0.5 x 16m + 0.5 x 16m |
| 18.0 to 18.9 sqm | 17 sqm | 2550W | 0.5 x 16m + 0.5 x 18m |
| 19.0 to 19.9 sqm | 18 sqm | 2700W | 0.5 x 18m + 0.5 x 18m |
| 20.0 to 20.9 sqm | 19 sqm | 2850W | 0.5 x 18m + 0.5 x 20m |
| 21.0 to 22.9 sqm | 20 sqm | 3000W | 0.5 x 20m + 0.5 x 20m |
| 22.0 to 24.9 sqm | 21 sqm | 3150W | 0.5 x 20m + 0.5 x 21m |
| 24.0 to 26.9 sqm | 22 sqm | 3300W | 0.5 x 21m + 0.5 x 21m |
| 26.0 to 28.0 sqm | 23 sqm | 3450W | 0.5 x 21m + 0.5 x 22m |
Heated Towel Rails
How hot do your heated towel rails get?
The temparature of the Radiant Australia heated towel rails can vary depending on bathroom temperature and whether they have a towel on them or not. A folded towel will generally hold and insulate the heat and therefore the bars under the towel will be warmer than bar without a towel on them.
In general they should be hot enough to dry and warm towels, but not too hot to cause any problems.
As a guide they get to approximately 50 to 60 degrees Celcius.
Where can your heated towel rails be positioned in the bathroom?
All of the Radiant Australia towel rails are rated either IPX4 or IPX5 when hard wired. The AS/NZS wiring regulations permit for IPX4 or greater rating appliances to be installed in zone 1 of your bathroom (which includes above baths and at the end of open showers). They must be hard-wired and the controller/switch must be positioned in zone 3.
You electrician can find details of this in their Australian Electrican Standards book on page 249 of AS/NZS 3000:2007 or on page 323 of AS/NZS 3000:2018.
As bathroom designs vary greatly and as with any electrical appliance, please ask your builder to consult the current version of the AS/NZS 3000 electrical regulations and any relevant local authority / inspector in order to confirm the exact position allowable.
What are the wiring options on Radiant Heated Towel Ladders?
The Radiant Australia range of heated towel ladders all have the same wiring options available.
Firstly, all of the heated ladder range come with a 1.2m cable and moulded plug so they can be plugged into a standard GPO/Powerpoint. Included with every towel rail is a hard wire concealing tube which when installed adds a fifth "leg" to the towel rails through which the wire will go if you are hard wiring your towel rail back to a switch/timer switch.
Therefore when ordering your heated towel rail you do not need to specify if it is to be plug-in or hard-wired. The only choice which you have to make regarding wiring is whether you want the cable to come out of the towel rail at the bottom left or bottom right.
Please be aware that often it is better for the cable to come out from the top of the rails. This is no problem because all of the Radiant Heated Towel Rails can be installed upside down. When you do this a bottom left rail becomes a top right rail, and a bottom right rail becomes a top left rail, so make sure you order the right side rail depending on whether you want the power to come out of the top or bottom.
Thermasheet
Which way up should the boards go?
It doesn't matter which way up you install the ThermaSheet boards as both sides of the board are the same.
What do you use to affix the ThermaSheet?
ThermaSheet is an easy to use product and can be fixed using cement based tile adhesive.
Solvent based or ready mixed adhesives MUST NOT BE USED.
You can also fix the ThermaSheet using screws and washers, however this will depend on the location and usage of the product. You should refer to the installation instructions for more information.
Can plasterboard dot and dab adhesive be used?
No. Plasterboard adhesive is gypsum based, ThermaSheet boards have a cementitious skin thus a cement based adhesive is required.
Can I tile straight onto the ThermaSheet?
Yes. The specifically manufactured cement polymer coating on the boards provides and ideal surface to lay your tiles onto.
Can the ThermaSheet boards be laid directly onto floor joists?
No. Although the boards can take the weight of over 40 tonnes per square metre, they can be distorted by the point load pressure of sitting on a joist
Can ThermaSheet boards be placed above under floor heating?
No. The boards are insulation board therefore they should go below the heating cable otherwise they will block the heat and prevent it warming your room. You may also damage the under floor heating cable over time.
Can ThermaSheet be used outside?
Yes. ThermaSheet has great waterproofing and insulation properties so it is particularly useful in both internal and external wet areas exposed to moisture.
Do you sell curved board?
There are a couple of ThermaSheet products which are ideal for use when you need to created a curved wall / surround. The pre-scored panels are great for curved areas such as bath surrounds. It can also be used to clad, waterproof and insulate archways, curved walls, curved partitions, curved bathroom panels, moulded tiled seats and round/curled cubicles.
What is the maximum weight of tiling that ThermaSheet can hold?
The unique surface structure and patented bonding of the surface to the foam core allows ThermaSheet to carry much heavier tiles that other types of tile backer board. When the board is fixed to a masonry wall with a continuous bed of tile adhesive, tile weights comfortably exceed 100 kg/sqm.
Niches
Can I use a ThermaNiche in a brick wall?
You can use a ThermaNiche on the internal skin of a double brick wall, however they are not suitable for single skin 90mm brick walls.
When installing in the inner skin of a double brick wall you need to ensure that you install a load bearing lintel directly above the thermaNiche as they are not designed to be load bearing.
Are ThermaNiches waterproof?
Yes. ThermaNiches are fabricated from the same board as ThermaSheet which is waterproof. The joins are also waterproofed at the time of manufacture.
However, as they are installed into brick wall and gyprock walls, there will be gaps between the wall and thermaNiche which will generally get waterproofed as part of the waterproofing of your bathroom, especially when the niche is being installed in a shower or above a bath. As you are waterproofing part of the niche, we recommend waterproofing everywhere inside the niche at the same time.