Thermowood Barrel Sauna

HCF 225 barrel sauna – short exterior length with generous interior height

The Bloomcabin HCF 225 pairs an exterior length of about 227 cm with a roomy sauna cabin. At approximately 229 cm wide and 238 cm high externally, it offers around 210 cm of interior height and benches measuring about 196 cm long. These proportions define the model: compared with a lower barrel sauna, it gives much more headroom for standing upright while retaining an exterior length of about 227 cm. The HCF 225 accommodates up to four adults. That figure is a maximum capacity, not a promise of identical personal space in every situation. With four people inside, the cabin is primarily arranged for shared seating. Used by one or two people, the bench may also allow stretching out, depending on height and preferred posture. There is no changing room in the HCF 225; the enclosed space is dedicated entirely to the sauna cabin. Before ordering, weigh the value of a taller cabin and longer benches against the need for a separate enclosed area. Consider the height of regular users, usual group size and whether you prefer sitting or reclining, rather than choosing by capacity alone.

Explore other designs in the Bloomcabin sauna collection.

HCF 225 at a glance

FSC®-certified thermowood for outdoor use

The HCF 225 is made from FSC®-certified thermowood. Thermal treatment reduces moisture uptake and improves dimensional stability. This is valuable for an outdoor sauna exposed to changing weather as well as the shifts in temperature and humidity between sauna use and cooling. Thermowood remains a natural material, so variations in grain and colour, along with gradual visual change, are normal. Even treated wood needs a well-drained location and regular inspection. Avoid standing water, splashback from the ground and accumulated leaves. To retain the original colour for as long as possible, use care products expressly suitable for the particular wood and surface. Exterior cladding, interior walls and benches have different requirements; a product intended for the outside is not automatically appropriate for surfaces that contact skin during sauna use.

This tall barrel shape combines the familiar rounded sauna form with substantially more headroom than a lower version. Rounded walls do, however, make the interior different from a rectangular cabin: there are no vertical wall surfaces at the upper and lower edges. Do not plan shelves, furniture or later accessories from a straight-sided dimension drawing alone. Use the actual clear interior space and the manufacturer’s specified mounting locations.

Wood stove depending on the selected configuration

Depending on the chosen configuration, the HCF 225 may be supplied with a wood stove. This option suits users who are prepared to manage the firing process and have suitable dry firewood storage. Unlike simply switching on a heat source, it requires more preparation: load and supervise the stove according to its instructions. Before ordering, confirm exactly which heating components belong to the selected version. Do not rely on product imagery to determine what is included; check the stated configuration and the relevant installation and operating documents.

Keep dry firewood sheltered from weather and well away from hot components. Heat-up time depends on factors including starting temperature, amount of wood, operation and the sauna climate you want, so no fixed time can be given. Follow the stove manual when lighting, refuelling and adjusting airflow instead of starting with an excessive fuel load. Never leave the fire unattended. Remove ash only once it presents no fire risk, and place it in a suitable non-combustible container until final disposal.

The chimney route, heat shielding, floor beneath the stove and safety clearances must suit the stove and chimney system actually selected. Follow the technical requirements of the relevant manufacturers and the requirements for the installation site. Resolve these points before assembly, since later changes to a wall penetration, roof area or protective surfaces can be much more involved. Do not use self-selected replacement parts for flue routing or heat protection unless they are expressly approved for the system. Before lighting the stove for the first time, inspect all connections, clearances and moving parts after installation. The stove operating manual remains the authority for fuel, use, supervision and cleaning.

Prepare the installation pad, foundation and access route carefully

The HCF 225 is wider than the HC 225. Check available width as well as length, and leave room for assembly and maintenance. Measure in several places if walls, fences, eaves or dense planting restrict the site. A plan view alone will not reveal overhead obstacles. Allow for the door swing, a comfortable access route and enough space to inspect or treat exterior surfaces later. Do not position the sauna so tightly between other structures that parts of it can be reached only after dismantling something. Watch for branches, downspouts and irrigation equipment that direct water onto the wood or obstruct access. The route from the house to the sauna should remain clear year-round; temporary stepping surfaces, loose cables and stacked firewood do not belong at the entrance.

The base must remain load-bearing, level and stable so the structure is supported evenly without distortion. The right foundation depends on site conditions and the installation requirements. Assess level, bearing capacity and drainage together before assembly. In areas exposed to freeze-thaw cycles, have a local professional determine how the site and foundation should be prepared rather than relying on a detail chosen for a different climate. Rainwater needs to drain away from the structure so lasting damp does not develop beneath the wooden construction. Soil and vegetation should not touch wood parts or prevent them from drying. After heavy rain, check whether water pools or flows toward the sauna from surrounding ground. A drainage channel added later cannot correct a base that settles or carries loads unevenly. Plan the foundation and sauna together from the outset.

Because the HCF 225 has no changing room, the exterior door opens directly into the sauna cabin. Provide a dry, sheltered place outside for robes, towels, shoes and personal items. It should be easy to reach without blocking the door swing or exit. Firewood and stove accessories need separate, suitable storage. A secure surface in front of the door also matters. Slippery wet areas, loose mats, unstable paving and trip edges are poor choices there. Exterior lighting can make access easier after dark; it must suit the intended location and be positioned so it does not obstruct access or assembly.

HCF 225 or HC 225?

The HC 225 has about 175 cm of interior height, is designed for two to three people and is more compact overall. It suits those who need less capacity and are comfortable in a lower cabin. Taller users should note that reduced interior height can noticeably affect both the feeling of space and ease of standing up. Compare not only exterior length, but also user height, usual occupancy, preferred sitting posture and the available width and height at the site.

By comparison, the HCF 225 offers around 210 cm of interior height, benches about 196 cm long and room for up to four adults. Since there is no changing room, all of its additional space belongs to the sauna cabin. It is a strong choice where headroom and more flexible bench use matter more than a separate enclosed area. With fewer users, the interior feels more open; with family or guests, extra seating is available. Consider whether these benefits will be used regularly and whether the larger space requirement suits your property.

If the differences are hard to picture from drawings, temporarily mark interior heights of about 175 and 210 cm on a wall. These marks show only the height difference, not the rounded cabin shape, but they help the tallest regular users judge the value of extra headroom. For the HCF 225, also mark out a 196 cm length to compare bench length directly with body height. Assess usual group size separately: suitable headroom does not indicate how much room you will want when seated together. Only then should the available site decide between the roomier HCF 225 and the more compact HC 225.

Caring for outdoor thermowood

Inspect wooden surfaces in a consistent sequence so less visible areas are not missed. Start with the upper exterior surfaces and work down to lower components. Pay particular attention to transitions, edges and areas close to the ground. Look for unusual distortion, opening joints, damage and areas that dry much more slowly after rain than nearby surfaces. If useful, record observations with a date and photo so the next inspection can show whether conditions have changed. Do not sand or coat affected areas too quickly. First consult the care instructions, as an unsuitable product or local treatment can produce an uneven finish.

Check the wood, barrel bands, screw connections, door and seals regularly. Correctly seated bands and connections help a barrel sauna keep its components in their intended positions. Make adjustments only as directed in the product documents: overtightening can be as problematic as ignoring visibly loose parts. The door should close freely without rubbing on the floor or frame. Keep seals clean and remove trapped dirt. Ventilate the interior after sauna use until remaining moisture has escaped. Do not dry damp textiles in the closed cabin. Once cool, clean benches and frequently touched surfaces using a suitable method, then let them dry fully before the next heating cycle. Also inspect joints and the undersides of benches, where moisture can be less obvious.

Use cleaning and care products only where they are suitable for the specific material and surface, and follow the stated dosage. Harsh household cleaners, abrasive tools and unsuitable coatings can damage wood fibres and affect colour and skin-contact surfaces. A pressure washer is unsuitable because its concentrated jet can damage the surface and force moisture into joints. Instead, remove loose dirt gently and with as little additional water as possible. Maintain the stove, chimney area and protective components only in accordance with their respective instructions, and allow hot parts to cool completely first. Remove leaves and plant debris from the exterior without damaging the wood with sharp tools. Then confirm that the door and technical components still function correctly and that ventilation paths remain clear.

Confirm what is included, along with access and local requirements

Review the selected configuration carefully because the stove, controls, sauna stones, chimney parts and protective components can vary. List everything needed for your planned heating solution and check it against the items expressly included. Accessories shown in product photos are not automatically supplied. Make sure the stove, stones, flue route and protective parts form the intended system. If specialist work or inspection is needed, arrange it before the assembly date. Keep the product documents available for assembly, first use and future maintenance. Sort delivered packages and fittings against the delivery documents before installation, retaining labels until every item is identified. Check all parts for completeness and visible transport damage. Document discrepancies on arrival, and clarify damaged, missing or unidentified components before assembly.

Before delivery, inspect the full route from unloading point to installation site. Gates and narrow garden paths are not the only obstacles: stairs, tight turns, slopes, soft ground and low branches can make handling difficult. Account for locations where larger components cannot be turned or set down safely. Clear the route in good time, keeping vehicles, garden furniture and other obstacles away. At the site, leave enough space to sort components methodically and store them safely for a short period. Protect delivered wood from ground moisture and precipitation before assembly as directed. Assemble the sauna using the supplied instructions. Arrange required helpers, tools and specified lifting equipment before work begins.

Before work begins, ask the municipal permit office which approvals, setbacks, provincial or territorial building provisions, and wood-burning appliance rules apply to the property and selected heater. Canada’s National Model Codes are models; they do not establish a single permit rule for every location. Advice from another municipality or from a differently equipped building may not fit your project. Have an appropriate local professional assess the foundation and site snow and wind conditions, and confirm chimney routing, clearances and current fire restrictions for a wood stove. Ask the relevant electrical regulator and a qualified local electrical contractor about notification, inspection, equipment approval and connection requirements. Do not run temporary cables across walkways or improvise cable routes through the sauna. Add confirmed distances from property lines, buildings and combustible areas to your site sketch. Further guidance on preparation, use and coordination is available under Useful information.