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PAP Heating Products

Under Tile Heating

Bathroom with under tile heating

On demand heating where you most need it

Under tile heating is a floor heating system designed primarily for existing homes with either cement or timber floors where the heating is provided by in-screed cables. This type of heating is often known as 'direct acting' due to its ability to heat up quickly. 

Under tile heating may also be called 'in-screed heating' because the cables are not installed within a full concrete slab, but rather covered with a cement-based screed.  » download Tile Heating Factsheet (PDF)

The ideal heating for existing floors

In existing homes with either cement or timber floors, this form of floor heating can be provided by either in-screed heating cables or heating mats. It is often used upstairs in new two storey constructions where off-peak in-slab heating has been installed at ground floor level.

A bathroom with our under tile heating in Sydney

Heating new bathrooms

Recently there has also been a trend towards using under-tile heating for bathrooms and ensuites in new homes - even where other forms of heating are used in the main living areas. 

This is partly due to the relatively inexpensive cost of installation and the fact that thermostat design and distribution of heat within the cement screed makes our systems very efficient.

The home owner also has complete control over temperature and operating times. Tiles retain residual heat after the system switches off and less energy is used when the door to the room is closed during heating.

Total control

Thermostats can be operated manually, or on a 4-event factory setting.  The 4-event clock thermostat allows for 25C between 6-8am whilst family is still at home, 20C between 8am-4pm whilst family is at school or work, 27C from 4pm-10.30 whilst family is relaxing at home and 20C between 10.30pm-6am. 

At weekends the temperature is set at 27C between 8am-11pm and 20C overnight.   Temperatures can be raised or lowered manually during any single event.  Off peak tariffs apply when the tile heating is used at night rate (typically 11pm-7am in Victoria) and day rate applies at all other times.

Heating cable

ELEKTRA DM20 ‘in-floor, direct-acting’ cable can be installed after construction in a screed under many different flooring surfaces including some timbers*, stone, tiles (ceramic and vinyl), parquetry and wool carpeting **.

DM20 provides a ‘quick response’ heating system especially popular in tiled bathrooms and toilets where it provides pleasant warmth underfoot and keeps towels dry and tiled areas free of mould.

DM20 can be installed over existing surfaces including timber and concrete.

* IMPORTANT: Not all timber floors are suitable for under-tile heating systems - please check with your timber flooring manufacturer to see how their product performs with floor heating. See - for example » BT Bamboo installation guide

** NOTE: where carpet is to be installed over the heated floor, the cable must have a screed to a minimum depth of 15mm.  This is to allow adequate dispersal of heat and to prevent potential damage to the heating cable.

heating mat

Heating Mats

ELEKTRA Heating Mats may be used with any type of floor suitable for heating; i.e. under a floor which radiates heat easily, such as floor tiles, stone, slate, polished concrete, low pile carpet or some wooden floor panels*.

The ELEKTRA Heating Mat is a very effective system of room heating. For a room, with good thermal insulation heating mats may be used as the primary heating system.

This is one of the fastest, simplest and most effective system for heating rooms or just selected locations, for a minimum outlay of time and cost.  Simple installation, comfortable, economical and safe.

* IMPORTANT: Not all timber floors are suitable for heating mat systems - please check with your timber flooring manufacturer to see how their product performs with floor heating. See - for example » BT Bamboo installation guide


Concrete floor surfaces need to be cleaned - then painted with an appropriate sealer - which enables the cable tapes to adhere to the floor.  Where the existing floor is timber, a tile underlay must be installed prior to laying the cable/heating mat.

Cables can be installed by either taping or wire mesh. Taping involves the cable being taped to the floor at recommended spacing - then covered with a screed.  Using Wire mesh involves the pre-laying of wire netting to which the cable is attached with small cable ties.  This method is generally used where the floor is uneven and requires a sand and concrete screed.  In both cases the system cannot be switched on for several weeks while the floor dries and hardens naturally.

floor preparation

Floor preparation prior to in-screed installation is the responsibility of the builder or home owner but we are happy to provide advice in this area.  Some individual installers may offer a screeding facility.

» download Tile Heating Factsheet (PDF)

» contact P.A.P. | agents & stockists

ACT / Canberra

P.A.P. Heating Solutions
Head Office

23 Winchcombe Court
Mitchell ACT 2911
ph. (02) 6242 9310
fax. (02) 62242 9398
» info@papheatingsolutions.com.au

» email enquiries form

Victoria / Melbourne

Thermal Products Pty Ltd

178-180 Holt Parade
Thomastown, Victoria, 3074
ph: (03) 9464 0822
Fax: (03) 9464 0630
» sales@thermalproducts.com.au

Other agents / stockists » contact details
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