Thermowood Barrel Sauna

Bloomcabin HCF 300: roomy barrel sauna for six to eight people

The Bloomcabin HCF 300 is designed for households that sauna regularly in a larger group or want plenty of room with fewer users. At approximately 301 cm long, 229 cm wide and 238 cm high, it is one of the more spacious barrel saunas in the range. The interior is around 210 cm high, allowing taller users to stand comfortably. Its approximately 269 cm-long benches accommodate six to eight adults; with two or four people, there is correspondingly more room to stretch out. The full cabin length is used as the sauna room. There is no integrated anteroom, so the interior is entirely dedicated to sauna use. Plan a suitable solution outside the cabin for changing and storing personal items. Include the route between house, garden and sauna in your planning too. The stated capacity is not the only deciding factor. Before buying, consider how many people will actually sauna at once, whether you mostly sit or also want to stretch out, and how much space is available at the intended site.

The following guidance helps you assess the available space, equipment and site requirements realistically. Find further sizes and designs in the Bloomcabin sauna range.

How the HCF 300 uses its generous interior

With a barrel sauna, external dimensions, internal height and bench length describe different aspects of use. The outer outline determines the required footprint, while the total height matters for branches, eaves and other obstructions. Internal height indicates how easily you can stand and move around; usable bench length is the key consideration for sitting and stretching out. Rounded walls mean the sense of space cannot be compared directly with a rectangular cabin. With six to eight adults, seating is shared more closely and a separate lying place for everyone should not be expected. With fewer users, there is more freedom of movement. Choose the size around your usual group: occasional larger gatherings do not automatically require a large cabin, whereas regular use with family or friends may well do.

Keeping thermowood and the barrel structure in good condition

The HCF 300 is made from FSC®-certified thermowood. Thermal treatment reduces sensitivity to changing moisture and improves dimensional stability. This benefits an outdoor sauna, but does not make a natural material maintenance-free. Sun, rain and changing temperatures mainly affect the exterior, while humid heat, perspiration, water and skin contact affect the wood inside. The appearance of external surfaces can change over time. Use only care products suitable for thermowood and the intended application. A product intended for exterior surfaces is not automatically suitable for benches or other areas with direct skin contact. Follow the product and care instructions before use, and first test the product on an inconspicuous area. This helps avoid unsuitable coatings, unpleasant odours and unwanted changes to the wood surface.

The barrel shape is created from coordinated timber elements held together by barrel bands and other connections. As wood absorbs and releases moisture, joints and tension can change slightly through the seasons. After assembly and at regular intervals, check that barrel bands are correctly positioned, screw connections remain secure and the door closes without rubbing. Make adjustments only in accordance with the assembly and care instructions. Barrel bands tightened too firmly can be just as problematic as loose connections. Also watch for persistent moisture, noticeable distortion and damaged areas. Minor changes in wood are not automatically a defect, but should be monitored. Causes such as permanently penetrating water, an unsuitable base or loose connections are usually easier to remedy when identified early.

For regular cleaning, a soft cloth, suitable brush and sparingly used material-compatible cleaners are usually enough. Let the sauna cool first and remove loose debris before wiping with a damp cloth. Do not soak the benches with water. Use sufficiently large towels when sauna bathing so as little perspiration as possible reaches the seating surfaces directly. The interior must be able to dry completely after cleaning. Check the floor, undersides of benches and hard-to-see corners where residual moisture can easily be missed. Fragrances, oils and other additives must not reach wood, the heater or sauna stones uncontrollably. Follow the instructions for the components being used.

Electric or wood-fired heater: your choice determines the preparation

An electric sauna heater is convenient to control, but requires a professionally planned electrical supply. The heater must suit the interior and the specific HCF 300 configuration; external dimensions alone are not enough for selection. Consider the manufacturer’s connection requirements, the intended controls and the installation situation in particular. Connection, circuit protection and electrical safety measures must be handled by a licensed electrical worker. Clarify the cable route before finishing the base and surrounding outdoor area where possible. Cables installed later can obstruct paths or require costly alterations. Temporary extension leads are not a permanent solution. Before first use, check assembly, connection and settings against the documentation supplied with the delivered components. Later changes to the heater, controls or wiring should likewise only be made by suitably qualified workers.

Depending on the configuration, the HCF 300 can also be fitted with a wood-fired heater. Lighting and refuelling form part of the sauna experience with this option, while flue routing and fire safety require more detailed planning. You need suitable, dry-stored firewood and the protective and flue components specified for the particular heater system. Required clearances from combustible materials follow the heater and sauna documentation as well as any site requirements confirmed with the relevant authorities. The flue route must also be considered when choosing the site. Overhanging branches, nearby structures and access for inspection and cleaning can influence placement. Before ordering, ask your council and regional authority which building-consent, air-quality and current fire-restriction checks apply, and confirm which qualified trades are needed. Do not use the wood-fired heater until the complete installation has been professionally fitted and checked.

The more suitable heating method depends not only on the operating experience you want, but also on conditions at the site. An electric heater needs an appropriate electrical supply installed professionally. A wood-fired heater requires a suitable place for dry firewood, ash handling and continued access to the flue system. Decide before constructing the base and cable routes, as flue routing and protection zones depend on this too. Whichever option you choose, operate the heater only in accordance with its instructions. The same applies to arranging suitable sauna stones and pouring water over them only in the intended way.

A level, load-bearing base is essential for this large barrel sauna

The HCF 300 needs a level, load-bearing and permanently suitable base. The best construction for the site depends on ground conditions and the planned surroundings, and should be assessed professionally before assembly. The load must be carried reliably, with all load-bearing sauna areas supported at the intended bearing points. Garden ground that looks level does not automatically meet these requirements: it may settle or change with moisture. Neither splash nor rainwater should collect permanently beneath the timber structure. Plan falls and drainage so water runs away from the structure without affecting adjacent areas. Do not improvise changes to load-bearing parts or support points. The assembly documentation and conditions on the individual property are decisive.

The approximate 301 × 229 cm footprint is not the total space requirement. In front of the door, allow a comfortably walkable area where several people can enter and exit in turn. As there is no anteroom, also plan a practical place there for robes, towels, shoes and personal belongings. A sheltered zone can make the route between sauna and resting area more pleasant, but must not obstruct the door, ventilation, required clearances or maintenance access. Provide a well-lit, preferably slip-resistant path from the house to the sauna. Loose pavers, unlit edges and muddy sections are particularly inconvenient when users are barefoot or walking after dark.

If you plan to add a shower, plunge pool, swimming pool or relaxation area, coordinate the routes sensibly. Additional features must neither direct water towards the sauna nor obstruct access to technical equipment. Check where services can run, how water drains and which areas remain safely walkable when wet or during winter. The resting area must not block the door. Dry storage is useful for towels and robes; with a wood-fired heater configuration, firewood also needs a dry, suitable storage location outside required protection zones. Leave enough space around the sauna for cleaning and checks. Nearby elements placed too close make it harder to inspect timber surfaces, barrel bands and connections. The sauna area should therefore not only look appealing, but also make future care easier.

HCF 300 and HCF 225: extra bench length or a more compact footprint?

The HCF 225 also has an internal height of approximately 210 cm, but is shorter at around 227 cm external length and intended for up to four adults. It suits households wanting to stand comfortably in a tall barrel sauna but usually sauna in a smaller group. Similar internal height therefore does not mean both models offer the same amount of space. At your intended site, check whether you can genuinely use the extra length of the HCF 300. Consider assembly access, the door area and maintenance routes as well as the footprint. If the garden is limited or mostly two to four people sauna, the more compact HCF 225 may be a better fit without a significant difference in internal height.

The extra bench length is the principal advantage of the HCF 300 over the shorter model: larger groups can sit along one continuous bench, while fewer users have more room to stretch out. In return, the HCF 300 permanently needs more footprint and a heating solution matched to the larger cabin. So check not only whether the model fits in the garden, but whether the additional interior will be used regularly. The larger version can be worthwhile for frequent sauna sessions with several people; if use is mostly by a small group, it may occupy more area than necessary.

For comparison, mark out the external outline of the models under consideration at the intended location. This makes it easier to see how much room remains for the door, paths and care after assembly. Then compare your usual group size with the bench length you want. With the HCF 300, also remember that there is no integrated anteroom and changing or relaxation spaces must be planned separately. Always compare both models using the configuration actually offered. Similar images or model names do not automatically mean the heater and accessories are included in the same combination.

Before ordering: coordinate configuration, delivery route and site

Before ordering, check the chosen configuration and stated delivery scope in full. This is especially important with different heating options, where it must be clear which components are included. Confirm whether the heater, controls, sauna stones and, for a wood-fired version, required chimney and protective parts are ordered with it or needed separately. Also check which components must be provided on site and which work needs qualified trades. Keep order documents, assembly instructions and documentation for technical components together. You will need them for later inspections or when selecting suitable replacement parts. Clarify inconsistent or unclear information on the product page, in the basket or in the order confirmation before assembly. Missing or unsuitable parts are much easier to correct before work begins.

Check the complete transport route from the intended unloading point to the final site. Gate widths are not the only consideration: include bends, steps, slopes, low branches, eaves and delicate ground surfaces. Confirm that components can be moved safely and temporarily stored dry without blocking public accessways or neighbouring property. The assembly area needs sufficient working room; a space between walls or dense hedges that only matches the sauna’s external dimensions may be too tight. Remove obstacles in good time and decide who will provide access on delivery day. If lifting or transport equipment is needed, adequate room must be available for it as well. Do not assume long or bulky parts can be manoeuvred freely on site. Access photos and measurements can assist coordination, but do not replace professional assessment where conditions are narrow, sloping or otherwise difficult.

Property preparation must meet applicable local building, district-plan setback and use requirements. Checks depend on the site, selected version and, for a wood-fired heater, the heater and flue arrangement. Before constructing the base, services or adjoining features, ask the council whether building consent or resource consent is needed for the project’s actual design and use. For a wood-fired version, also ask the council and regional authority which heater, flue, air-quality and current fire-control checks apply. A licensed electrical worker must complete electrical work; use suitably qualified professionals for load-bearing surfaces, fire safety and flue questions. Doors, technical components and inspection areas must remain accessible after assembly. Find further guidance for preparing your order under planning and ordering guidance.

Frequently asked questions on installation, care and use