How much does insulation cost in Hobart?
Roof insulation in Hobart, meaning batts laid over the ceiling, runs $11–$32 per square metre installed; across an entire three-bedroom ceiling the spread is $1,075–$3,600. Underfloor work beneath timber boards is $14–$40, and walls with the frame exposed take batts at $9–$22. Hobart falls in the cool temperate zone of the National Construction Code, with long, chilly winters, and it is overwhelmingly a city of detached houses (ABS 2021 Census), so most jobs here cover a whole roof space, a full set of external walls or an entire subfloor.
Comparing cities, or after the Australia-wide picture? See the national guide: Insulation cost in Australia.
Detailed Pricing — Insulation Cost in Hobart 2026
| Service | Low | Typical | High |
|---|---|---|---|
| Ceiling insulation batts (per sqm installed) | $11/sqm | $18 | $32 |
| Wall insulation batts, open frame (new build or renovation, per sqm installed) | $9/sqm | $14 | $22 |
| Underfloor insulation (per sqm installed) | $14/sqm | $22 | $40 |
| Ceiling insulation – 3-bed home (total) | $1,075total | $2,250 | $3,600 |
| Wall insulation – 3-bed home (total) | $1,350total | $2,250 | $3,600 |
| Underfloor insulation – 3-bed home | $1,075total | $1,800 | $2,875 |
| Reflective foil insulation (per sqm) | $7/sqm | $13 | $20 |
| Spray foam insulation (per sqm) | $27/sqm | $45 | $90 |
| Blown-in / loose-fill (per sqm) | $16/sqm | $22 | $45 |
| Ceiling insulation top-up over existing (per sqm installed) | $9/sqm | $16 | $27 |
| Remove old insulation (per sqm) | $7/sqm | $14 | $22 |
| Labour only (insulation installer, per hr) | $36/hr | $54 | $72 |
| Retrofit wall insulation, existing walls (blown-in or injected, per sqm) | $22/sqm | $36 | $63 |
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Get Hobart quotes →Prices include GST. Based on Hobart metro area, October 2026. Outer suburbs may vary.
What Affects Insulation Costs in Hobart
Zone 7 sets the R-value
Minimum insulation levels in the National Construction Code change with the climate zone, and central Hobart falls in zone 7, cool temperate. At the Ellerslie Road station July days average 11.8 °C and nights 4.6 °C (BOM averages), so a higher R-value earns its keep. Have each installer name the product and its R-value on paper so the prices compare like with like.
Start with the ceiling
YourHome puts the saving from roof and ceiling insulation at 45 percent or more of heating and cooling costs, which is why it comes first. Batts cost $11–$32, and where old batts are still in place but thin, a top-up over them is $9–$27. Nearly half of Hobart homes, 47.9%, have three bedrooms (ABS 2021 Census), the size our whole-ceiling price is based on.
Floors and slab edges
A house on stumps or piers loses heat through its timber floor, and insulation fixed underneath costs $14–$40, about $1,075–$2,875 across a three-bedroom home. For a new slab, zone 7 rules mean the slab's perimeter edges need insulating, to at least R0.64, so check the builder has priced it.
Open walls or finished walls
Walls are cheapest to insulate while the frame is open, at $9–$22, which makes a renovation the obvious time. In walls that are already lined, fill must go in by blowing or injection, which typically costs more at $22–$63. A three-bedroom house done during a renovation comes to $1,350–$3,600.
No federal rebate
Hobart homeowners will not find a federal insulation rebate. Check with the Tasmanian Government for any program that fits before you book, and budget on paying the full installed price.
Wiring, downlights and asbestos
Australian Standard AS3999 calls for a competent person to assess electrical safety before insulation goes in, and only a licensed electrician can give that advice. Old halogen downlights must not be covered. Some older homes have loose-fill asbestos in the ceiling; if you suspect it, call a licensed asbestos assessor first. Tasmania requires a WorkSafe Tasmania licence for friable asbestos in any amount, and for non-friable material covering over 10 square metres.
Clearing and awkward spaces
Batts that are damp, damaged or fouled by vermin are usually pulled out before new ones go in, at $7–$22. In a tight roof space, blown-in fill at $16–$45 reaches corners batts cannot, and spray foam ($27–$90) suits gaps and odd cavities. If you only need an installer's time, labour alone runs $36–$72 an hour.
How to Save Money on Insulation Cost in Hobart
Insulation Cost in Hobart by Home Size
The floor under a house on piers grows with its footprint. Say it measures 95 square metres: at $14–$40 a square metre installed, underfloor comes to $1,330–$3,800. The three-bedroom underfloor row, $1,075–$2,875, prices a whole three-bedroom floor as one job.
The three-bedroom house is the size the whole-ceiling price rests on, so a smaller or larger roof is read from $11–$32 a square metre. Old batts that are damp or fouled by vermin add removal at $7–$22 a square metre, a tight roof space may take blown-in fill at $16–$45, and mild summers in Hobart mean roof-space work can be booked through the year.
Insulation Cost in Hobart: What the Quote Should Include
A Hobart insulation quote works best when it can be checked with a pencil: ceiling area times the rate per square metre, plus removal if old batts come out. Ask for the area, the rate and the total shown separately, with ceiling, wall and underfloor each on its own line.
- Ceiling area in square metres, the rate per square metre inside $11–$32, and the total, so the sum can be repeated.
- Removal of damp, damaged or vermin-fouled batts as its own line at $7–$22 a square metre, only where the old layer has to go.
- Thin batts that can stay: a top-up over them at $9–$27 a square metre instead of a full new layer.
- A house on stumps or piers: underfloor fixed from below at $14–$40 a square metre, with the timber floor area stated.
- Wall lines marked open frame at $9–$22 a square metre or filled by blowing or injection at $22–$63, with the stage of any renovation noted.
- For a cramped roof, blown-in fill at $16–$45 a square metre reaches corners batts cannot; spray foam at $27–$90 only for gaps and odd cavities.
- Labour alone at $36–$72 an hour if only an installer's time is wanted, with materials supplied by someone else clearly stated.
- The brand, the R-value and the area covered put on the invoice, with the length of the product warranty.
- Start and finish dates, payment stages and GST in writing.
Frequently Asked Questions — Insulation Cost in Hobart
Our Methodology
These are independent estimates from public cost guides, marketplaces and industry rate data, and no tradesperson can influence them, so always get a few quotes. Last reviewed October 2026. Read our full methodology →