Categories
Price: 15695.00 GBP
Disclaimer: Some of the links on this website are affiliate links, meaning we may earn a commission if you click through and make a purchase. This comes at no additional cost to you.
By clicking the button above, you acknowledge that you will be redirected to a third-party website and agree to their terms and conditions.
Log in to manage favorites.
Similar Products
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia M3 SL ...
-
Steam & Oak Cube Sauna 2m — Spruce or Thermowood, - Spruce — 44mm slow-grown / H...
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia M3 SL ...
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia Cilind...
-
Steam & Oak Cube Sauna 2m — Spruce or Thermowood, 5 - Spruce — 44mm slow-grown /...
Steam & Oak Holvi 590 Thermowood Barrel Sauna (Electric or Wood-Fired) - Shell only
Steam & Oak Holvi 590 Thermowood Barrel Sauna The Holvi 590 is a 5.9 metre barrel laid out in three spaces: a 60cm covered terrace at the door, a 1.5 metre changing room with its own benches, and a hot room about 3.56 metres long behind a tempered, tinted glass door. The changing room is what makes a barrel this size work through a British winter. You undress and cool down in a dry, sheltered room, the hot room stays hot because its door opens into the changing room rather than outdoors, and wet towels stay out of the heat. The Holvi 590 is built in the Ø2.27m section, 2.38 metres high, from 46mm thermowood staves with stainless steel bands. Every part of the layout can be changed. The barrel can be built without the changing room for a longer hot room, or without the terrace, and we will confirm the hot room size for any layout before you order. Why the bands are stainless A barrel only stays round and tight because the bands keep the staves pressed together. Timber shrinks each time the sauna is heated and dries out, then swells again through a wet British winter, so the bands work constantly and need checking and re-tightening over the life of the sauna. Ordinary steel bands eventually rust, and rust runs down the timber and stains it. Stainless steel does not, and on the Holvi it is standard. What thermowood actually does Thermowood is timber that has been heat treated at around 200°C rather than chemically preserved. The process breaks down the sugars and resins that fungus feeds on and permanently reduces how much moisture the wood can reabsorb. The practical result outdoors is timber that moves less through wet British winters and resists rot without chemical treatment, in a structure that depends on staying tight. Choose your heater at checkout Shell only. The complete sauna, you source your own heater. Harvia Club 15kW. A large floor standing heater built for bigger rooms and heavy use. It runs on a three phase supply only. Harvia Club 15kW WiFi. The same heater with app control, supplied with the Harvia door sensor required for remote starting. Three phase only. Harvia Pro 20 wood fired. A 24.1kW log burning stove, rated by Harvia for rooms of 10 to 30m³, with a large firebox and a big load of stones. No electrical supply needed. Supplied with a stainless steel chimney. Harvia Pro 20 SL wood fired, through wall feed. The same stove, loaded through the wall from outside the hot room. Sizing the heater. Harvia size heaters on the room volume, then add 50% for solid log walls and about 1.2m³ for every square metre of glass, because both soak up heat that an insulated panel would not. The Holvi 590 hot room is about 13.3m³ (our estimate from the plan), which behaves more like 21m³. That is too much for a 9kW or 10.8kW heater, so on this model we offer the 15kW Harvia Club or the Harvia Pro 20 wood stove, and not the smaller heaters or gas. We would rather sell you the right heater than the cheapest one. Tell us where the barrel is going and how you plan to use it, and we will confirm the choice with you before you order. Before you order: your electricity supply The electric heaters are not plug in appliances. The Harvia Club heaters need a three phase supply, which most UK homes do not have, so check before you choose one. If you are single phase, the wood fired Pro 20 is the way to heat a room this size. Budget for a qualified electrician and a Part P sign off. The wood fired options need no electrical supply for the heater. Tell us your supply type and main fuse rating when you enquire and we will tell you honestly what will and will not work before you commit. Build and finish Walls: 46mm thermowood staves Bands: Stainless steel tension bands Benches: Two full length side benches in aspen or black alder Terrace: 60cm covered terrace at the door end Changing room: 150cm, with two pine side benches and a tempered tinted glass door into the hot room Door: Multi layer glued timber door with a tempered double glazed window, wooden handle and lock Windows: Two tempered, double glazed windows, at the front or the back of the barrel Floor: 18mm timber floor boards Roof: Finnish bitumen shingles What's included Barrel in 46mm thermowood Stainless steel tension bands Two benches in the hot room Covered 60cm terrace Changing room with two pine benches and a tinted glass door to the hot room Glazed timber front door with handle and lock Two double glazed windows Timber floor Bitumen shingle roof Heat resistant heater protection plates Your chosen heater, on all variants except shell only, with the chimney on the wood fired options Harvia door sensor, on the WiFi versions Options available The Holvi 590 can be configured to suit your garden: Layout: without the changing room, or without the terrace Windows: at the front, at the back, or both Panoramic glass: tinted, toughened glass across half of the back wall, or the entire back wall with a heater safety fence Glass front: a full tinted glass facade with a
Product information updated: 05 Nov 2026
Disclaimer: Product information, including title, description, and images, is sourced/provided by our affiliate partner: Steam & Oak.
Disclaimer: Some of the links on this website are affiliate links, meaning we may earn a commission if you click through and make a purchase. This comes at no additional cost to you.
By clicking the button above, you acknowledge that you will be redirected to a third-party website and agree to their terms and conditions.
Product information, including title, description, and images, is sourced/provided by our affiliate partner: Steam & Oak.
Share this product with a friend:
Refer a friend and earn 0.05 CEC when they click the link, plus an additional 1.00 CEC if they register. Share this Product and boost your earnings together!
Log in to manage favorites.
Similar Products
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia M3 SL ...
-
Steam & Oak Cube Sauna 2m — Spruce or Thermowood, - Spruce — 44mm slow-grown / H...
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia M3 SL ...
-
Steam & Oak Cube Sauna 2m — Spruce or - Spruce — 44mm slow-grown / Harvia Cilind...
-
Steam & Oak Cube Sauna 2m — Spruce or Thermowood, 5 - Spruce — 44mm slow-grown /...
Share this product with a friend:
Refer a friend and earn 0.05 CEC when they click the link, plus an additional 1.00 CEC if they register. Share this Product and boost your earnings together!