Electric underfloor heating in Waverley
We install electric underfloor heating across Waverley, where gas heating has been off the table since 2022 and almost everything is a flat. Flats are 64.1% of homes here, so most of what we install is a mat under a bathroom floor somebody else's building owns. The mornings are maritime and mild, and a tiled floor in an old block still starts the day cold. We fit under tile heating mats in inter war flat bathrooms and in screed heating cable in terrace rear additions.
The benefits of electric underfloor heating in Waverley
Flats are 64.1% of homes here and 30.0% of all dwellings sit in three storey blocks, which is about twice the number of separate houses. Most of the reasons below follow from that single fact. Two come instead from Council's gas rule and its flood annexure, and both of those point at an electric floor.
Electric heat is the only heat allowed here
Council's plan has said since 8 December 2022 that gas internal space heating is not permitted in any residential development. The benefit of under tile heating mats is that they need no flue, no gas meter and no exemption from that rule. Solid fuel heating is not permitted in any development here either, so a new wood fire is out as well. A heritage terrace consent of 23 September 2026 says heating, if provided, must be electric or solar sourced.
The inside of an inter war flat may change
Council's inter war controls say modification of the interior can occur where there is no impact on the street facades. The same controls ask that terrazzo flooring and unglazed terracotta tiles in the entries are retained. The benefit is that under tile heating mats can go into a bathroom retile without the foyer being touched. No fixing goes through the slab and nothing is chased into a party wall the next flat shares. 52 listed items here carry a strata plan, and in those the owners corporation signs the heritage certificate under seal.
Flood rules here name heating and wiring outright
Council's flood annexure, in effect since 18 April 2026, says heating systems should be installed above the probable maximum flood level. It adds that wiring below that level must suit continuous underwater immersion and contain no fibrous components. We read that annexure before we set out the heating, so our thermostats mount above the level it names. The benefit is that the under tile heating mats and their circuit are specified to the rule rather than against it. Overland flow means a property on a hill can still be mapped, so the mapping is checked before the design.
Few homes here run an off peak circuit
A controlled load circuit reaches only 7.7% of households here, the third lowest share in Sydney. The benefit of our thermostats is that they run on a timer, so the floor heating works on an ordinary tariff. The network peak here runs from 3pm to 9pm, and new connections default to a demand tariff set inside it. So the floor heating warms the tiles before that window opens rather than running inside it.
Terraces take the heating in the rear addition
Queens Park is 38.0% semis and terraces, which is the highest share of any suburb in this area. The heritage controls put additions at the rear, and ask that building services are not visible from the streetscape. So the rear addition is where a new floor goes down, and where the heating can go with it. In screed heating cable goes into that new topping, and the mass of the screed holds the heat for hours. The benefit is that nothing shows from the footpath and the original chimneys the controls protect are left alone.
A rebuild starts electric at the slab
About 34 new houses a year are approved here, and every one of them replaces a building already standing. Because gas space heating is not permitted, the heat in that new house has to be electric from the start. In slab heating cable is tied to the reinforcement before the pour, so it has to be decided with the engineering. The benefit is that the heating is designed in rather than added to a house that is already finished. Where a floor sits over parking rather than on the ground, the insulation goes underneath the heated slab.
What we would install in Waverley
Two thirds of the homes here are flats with floors already down, which is what puts the mat first.
A mat under the tiles
30.0% of all dwellings here sit in three storey blocks, and those floors are already down. Under tile heating mats go into the tile bed while the bathroom is open, and they warm quickest of our three systems.
Under tile heating matsCable in a screed
A terrace or Federation house here grows at the back, where the flood concession allows an addition of up to 50m². In screed heating cable goes into the topping of that new floor, so the heating is set out with the levels.
In screed heating cableCable in a slab
Every rebuild here replaces a building that was already on the site, so the slab is poured into an existing street. The cable is tied in with the reinforcement, so in slab heating cable goes in before the slab is poured.
Slab heating cables, dual coreWhy Waverley properties choose us
We install across Waverley and the rest of the Waverley area, and we size every job from your floor plans before we quote. Installation is always subject to checking installer availability, which we do before we agree a day.
How we install underfloor heating in Waverley
Plans first, then a quote
Send us the plans for your new home, renovation, office or hotel. We measure the heated areas from them, calculate the cable size and quote the materials. If you want us to install, a second quote covers the installation labour. Nothing is ordered and no day is booked until you accept.
Installation day
Once you accept and tell us the job site is ready, we agree a day, subject to checking installer availability. The floor has to be prepared and ready before that day: your own trades handle levelling, waterproofing and anything else above the slab. Our installer lays the cable or the mat, fits the thermostat, and tests the system with our own equipment before leaving site. Your tiler covers it with the screed or the tile bed.
In a strata building the path is different again
In a New South Wales strata scheme the lot boundary generally sits at the upper surface of the floor. The slab underneath belongs to the building rather than to you. We lay the mat into the tile bed instead of touching that slab, and nothing is drilled or chased into it. Installing hard flooring, and the wiring and power points that come with it, is a minor renovation under the Strata Schemes Management Act 2015. Waterproofing is carved out of that definition, so a full bathroom rebuild goes to a special resolution rather than an ordinary one. Your builder or project manager deals with the owners corporation, and we build to whatever that approval allows.
Getting the van near the job
Parking is the binding constraint on a Bondi or Bronte job. A tradesperson permit runs for seven days at a time and the resident has to apply for it, with two active at once. Materials therefore get carried a distance and up stairs, and a laid mat stays under board until the tiler starts. Hours are 7am to 5pm on weekdays and 8am to 3pm on Saturday, so under tile heating mats land on the tiling day.
Underfloor heating for Waverley homes
A flat area with an old flat stock
Flats were already 61.3% of the homes here in 2006. Separate houses then fell 24% across the fifteen years to 2021, from 5,808 to 4,405. Council's own fact sheets describe the inter war blocks as now in excess of 75 years old. They were constructed, in Council's words, prior to the introduction of modern building codes, in what it calls a hostile marine environment. Corroded reinforcement in those slabs is often called concrete cancer, and under tile heating mats go into the tile bed above it.
Five belts, and the work differs in each
Bondi Beach is 85.7% flats and Bondi 79.6%, which together make the basin where the walk ups stand. Bondi Junction is the tower centre, with 36.6% of its dwellings in blocks of nine storeys or more. Queens Park, Waverley and the Bondi Junction fringe are the terrace streets. Bronte and Tamarama sit in the beach valleys with a more even split of houses and flats. Dover Heights is the house ridge at 66.2% separate houses, which is where in screed heating cable covers a whole living floor.
Sequence matters more than usual here
An inter war block has its own repair programme, and concrete and wall tie work happens on the building's schedule rather than yours. A mat should not go down over a slab crack that has not been repaired yet. Where rewiring to current codes is part of the same job, the electrician and the tiler have to be sequenced together rather than booked separately. We size the under tile heating mats from your floor plan, so that ordering happens before anybody is on site.
Winter mornings in Waverley
The nearest long record is the Bureau of Meteorology at Observatory Hill, which sits between 5.5km and 7.6km from every suburb here. Sydney Airport further south is the other station in the readings below.
- July nights
8.1°C at Observatory Hill, which is the nearest long record, and 7.4°C at Sydney Airport further south. A tiled floor sits close to that overnight, and it is the first thing a bare foot meets in the morning.
- Frost
Not one night at or below 2°C is on record at Observatory Hill in an average year. The overnight low is what decides how cold the floor is at seven in the morning.
- Climate zone
Zone 5 everywhere here, from Bondi Beach across to Queens Park. Insulation under the heating is what keeps the warmth in the room, and it is sized from that zone.
Get a free quote in Waverley
Tell us what you need done in Waverley and we will get back to you with a price as soon as we can. There is no obligation to go ahead.
Services we provide in Waverley
New home builds
Home renovations
Bathroom renovations
Apartments
Hotel bathrooms
Office buildings
Cold storage and frost heave
Suburbs we service in Waverley and surrounds
We install across the Waverley area and the surrounding localities, and we check installer availability before we agree a day. If your suburb is not listed below, contact us and we will confirm coverage.
Frequently asked questions about Waverley
Do you cover every suburb in the Waverley area?
Yes. We install across the Waverley area and the surrounding localities, including every suburb listed on this page. We check installer availability before we agree a day, which is the one condition that travels with every job. If your suburb is not shown, contact us with the address and we will confirm coverage before we quote.
What are your service hours in Waverley?
Our hours are Monday to Friday, 8am to 5:30pm, and we are closed on Saturday and Sunday. Plans and photographs can be sent at any time through the quote form on this page. If you need us on site in Waverley, the day is agreed once we have checked installer availability. It is worth sending the plans as early as you can.
Is gas heating off the table here?
Yes, in any residential development that needs consent. Council's controls have said since 8 December 2022 that gas cooktops, gas ovens and gas internal space heating are not permitted in any residential development. Solid fuel heating is not permitted in any development either. Council's own page describes the rule as covering new homes, while the conditions written on renovation consents go further. So an electric heated floor is the compliant choice, and under tile heating mats are the version a retile takes.
Can I change the inside of an inter war flat here?
Yes, inside your own apartment. The inter war controls allow the interior to change where the street facades are untouched, which is what makes a bathroom floor straightforward here. The foyer is the part that is protected, down to its terrazzo and terracotta. So under tile heating mats go into your own bathroom floor, while the foyer's terrazzo and terracotta stay untouched.
Does the flood mapping affect where heating can go?
Yes, and this area is unusual in saying so directly. Council's flood annexure says heating systems should be installed above the probable maximum flood level where viable. It adds that wiring below that level must suit continuous underwater immersion. Council counts 506 properties flooded above floor level in a one in a hundred year event. Get the flood certificate first, because under tile heating mats and their wiring are then specified from the level it gives.
What should I check about the power supply here?
The board, and earlier than you would elsewhere. Controlled load is rare here, so a heated floor usually either gets a new circuit added or runs on the ordinary tariff. Either way it wants its own protected circuit. In an inter war block the switchboard may also be due for the rewiring to current codes that Council's fact sheets describe. Doing the switchboard and the under tile heating mats in one visit means the wall is opened once.
Does a mild winter make this not worth doing?
No, because the floor is the point rather than the air. Observatory Hill records a July mean minimum of 8.1°C and Sydney Airport 7.4°C. No night at or below 2°C is on record at Observatory Hill, and the airport averages about two in five years. The benefit of under tile heating mats is that the tiles are warm at seven in the morning, every morning.
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