Beancross Rd, Polmont, Falkirk FK2 0XS Open today · 9am–5:30pm 07367 086350 07861 958262 AboutAbout Our story & team Reviews Verified Google reviews Garden RoomsAll Garden Rooms Explore the full range Home Offices Work-from-garden studios Garden Gyms Private fitness spaces Garden Bars & Lounges Entertain in style Annexes & Guest Rooms Extra living space SaunasBarrel Saunas Jonas Grand From £8,995 Jonas Grand From £8,995 Jonas S From £6,495 Jonas Teak From £6,995 Joris Grand From £9,495 Teak From £8,495 Cube Saunas Ebony From £10,995 Ebony From £10,495 Ula Classic Beige Full-Glass From £9,995 Ula L From £11,495 Ula L From £12,495 Ula Micro From £8,495 Ula Mini From £8,995 Ula Mini From £9,495 Ula Mini From £9,295 Modular Saunas Celsium Herkus L From £12,995 Tauras Grand Ebony From £16,995 Tauras Modular Air with Aiste Grand Hot Tub From £19,995 Hot TubsAll Hot Tubs Wood-fired thermowood soaking tubs Aiste Grand From £6,995 Benas From £5,495 Log CabinsAll Log Cabins 30 designs, 34mm to 68mm walls Cabin Range & Prices Full 2026 price list Cabin Photo Gallery Real Scottish installations Sheds, Garages & Summerhouses From £500, installed 2026 Shed Price List Sheds, garages, playhouses Glamping & Residential Cabins Pods, barrels & lodges Other ServicesBBQ Huts Year-round outdoor cooking Glamping & Residential Holiday-let & annex builds Sheds, Garages & Summerhouses From £640, installed Outdoor Kitchens Built for Scottish weather Composite Decking Low-maintenance decks Bespoke Design Service Full design & build Our WorkRequest Estimate Barrel Saunas # Teak Harvia Spirit.The wood-fired traditional. A traditional teak-toned barrel sauna paired with the Harvia Spirit wood-fired stove, the fully off-grid installation, no electrical works needed. Request Your Estimate 07367 086350From £8,495 · Delivered & installed Overview ## Teak Barrel Sauna, Harvia Spirit. This is the fully off-grid barrel sauna, a teak-oiled thermowood shell with the Harvia Spirit wood-fired stove, needing no mains electricity, no consumer-unit spare capacity, no electrician on the install day. The Spirit is Harvia's most popular wood stove for a reason: 16kW output, glass door so you watch the fire while you sit, external burn access so you top up wood without opening the sauna, and a thick cast-iron rock cradle that holds a full 40kg of Vulcanite stones for a proper Scandinavian-strength löyly. It's the specification we recommend for rural properties without spare 32A capacity, for buyers who prefer the ritual of a wood-fire, and for garden schemes where running armoured cable would mean lifting a driveway. Key features ## What makes it different. ### Fully off-grid | no mains needed Wood-fired stove. No 32A circuit to run, no electrician on install day, no standing power draw. ### Harvia Spirit 16kW stove Cast-iron construction with glass door and external feed. Industry-benchmark wood stove for barrel saunas. ### 40kg stone capacity Vulcanite sauna stones, enough thermal mass for a full evening of steam without adding wood. ### Teak-oiled thermowood Warm honey-toned exterior in thermally-modified spruce with saturating Danish teak oil. ### Hemlock interior throughout Knot-free western hemlock benches, backrests, walls and duckboards. ### Full-height glass front Panoramic glass end wall and door, the fire glow is the design feature. Specification ## The numbers behind the object. Capacity4–5 adults External length2.2 m External diameter2.1 m Timber (exterior)Thermowood spruce, teak-oiled Timber (interior)Knot-free western hemlock HeaterHarvia Spirit wood-fired, 16kW Stone capacity40 kg Vulcanite Heat-up time≈ 45 minutes from cold FlueTwin-wall insulated, roof-through Electrical requirementNone Warranty10 yr timber · 5 yr stove Living with it ## How it actually works day to day. The Spirit is a properly-engineered wood stove, not a decorative piece with a chimney. External feed means you load wood from the outside without letting cold air into the sauna. The 40kg stone cradle stores enough heat that once it's at temperature you can go 45 minutes between logs without the temperature dropping. Cold-to-soak is around 45 minutes on 12–15 kg of dry hardwood, longer than an electric heater, but with zero running cost beyond firewood and a fire ritual that is genuinely part of the appeal. Flue is twin-wall insulated stainless up through the barrel roof, terminated with a spark arrestor and rain cowl. We include the full flue system, cleaning brush and first cord of kiln-dried hardwood in the price. Best for ## Who typically buys this one. - Off-grid, rural or semi-rural gardens - Properties without spare 32A capacity in the consumer unit - Buyers who want the ritual of a fire as part of the sauna experience - Garden schemes where cable-routing would mean disruption On-site footage ## See it in motion. Still images only tell you so much. These short clips show the Teak Barrel Sauna, Harvia Spirit exactly as it sits in a finished garden, the details a spec sheet can't convey. ### Teak barrel with Harvia Spirit stove The teak-finish barrel paired with the Harvia Spirit wood-burning stove. Watch how quickly it comes up to temperature and how the flue is properly weathered through the barrel roof, a detail we never subcontract. Real installations ## Teak in Scottish gardens. Every photograph on this page is a genuine Signature Garden Rooms installation. Frequently asked ## Straight answers. If your question isn't listed, call Ryan on 07367 086350. How long does it take to heat up?About 45 minutes from cold to 80°C with 12–15 kg of dry hardwood. Reheat-and-hold is much less, the 40kg stone cradle stores enough heat that a top-up log every 30–45 minutes keeps the sauna at temperature. Do I need to sweep the flue? Can I run it indoors? How much wood does it use? Is there any electrical requirement? Do I need building control approval for the flue? What's the warranty? Can I convert an electric barrel to wood-fired later? Next step ## Ready to talk about the Teak Barrel Sauna, Harvia Spirit? Tell us your garden, your access, and roughly when you'd like it in. We'll come back with a considered price, honest lead time, and any planning notes for your site. Request Your Estimate 07367 086350 Fully insured · £5m public liability · Falkirk-based, working across Central Scotland Explore the site ## Popular pages & service areas Other services - insulated bespoke garden rooms in Falkirk - premium log cabins in Central Scotland - Nordic BBQ huts for Scottish gardens - saunas and hot tubs supplied and installed - outdoor kitchens built for Scottish weather - composite decking installers near you - timber sheds, garages and summerhouses - bespoke garden building design and build - garden rooms in Falkirk - garden rooms in Stirling - garden rooms in Glasgow - garden rooms in Edinburgh - garden rooms in Livingston - garden rooms in Dunfermline - recent installs across Central Scotland - verified Google reviews (4.6★) Bespoke, fully-insulated garden rooms designed and built across Falkirk and Central Scotland. Explore - Garden Rooms - All Services - Our Work - Service Areas - About - Reviews Contact - Beancross Rd, Polmont,Falkirk FK2 0XS - 07367 086350 - 07861 958262 - ryan@amrgardenbuildings.co.uk Opening hours - Mon – Fri9:00 – 17:30 - Saturday9:00 – 17:00 - Sunday9:00 – 16:00 Leave a Google review © 2026 Signature Garden Rooms. All rights reserved. · Formerly AMR Garden Buildings · Owned and run by Ryan Meldrum PrivacyCookiesTermsContact CallRequest Estimate