Spacious barrel sauna with sheltered anteroom
N 250 thermowood barrel sauna – with anteroom and generous seating
The Bloomcabin N 250 is a spacious barrel sauna for anyone wanting more room to move than in a compact two-person sauna, plus a separate anteroom. It is particularly suited to couples, families and small groups who want to sauna together regularly. The generous bench area allows varied seating positions, while the anteroom separates the hot sauna space from direct outdoor access. This creates a practical transition zone without giving the sauna the footprint of a large sauna building. Despite its compact barrel shape, the N 250 needs a carefully prepared site with enough room for access, assembly and future maintenance. The following sections put its exact external and internal dimensions into context.
The guidance below will help you assess space, location, heating, assembly and ongoing care realistically. If you would first like to compare different sizes or designs, explore further models in the Bloomcabin sauna range.
Everyday space and layout
More freedom of movement than the N 210, without the footprint of a large sauna house
The N 250 combines the classic barrel profile with a separate anteroom and a clearly defined sauna area. The extra space is especially noticeable when several people are seated at once, change position, or prefer not to sit close together during a longer sauna session. Even for two people, the model offers welcome room that external dimensions alone cannot fully convey. When choosing, consider not only the usual number of bathers but also how you like to use the sauna. Anyone who enjoys changing seats, wants more personal space or stays in the cabin longer benefits more from the additional room than someone taking short sessions alone.
The N 250 remains much easier to accommodate than a large garden building with a sauna room. The bench area measures approximately 180 × 198 cm, allowing different seating arrangements and more space between users. Check whether this area suits your height, preferred seating position and desired distance from others. The figures show the available area, but cannot predict your personal impression of space. For households that usually sauna alone, this capacity may be more generous than necessary. For regular shared use, however, it becomes an important comfort feature.
The anteroom has a different role from the heated interior. It provides a sheltered transition when entering or leaving the sauna and reduces direct air exchange with the sauna area when the outer door is opened. Keep the entrance and door-swing area clear so stored items do not block the way. You should still provide a suitable rest area and a place to cool down outside the sauna, as the compact anteroom is not designed for this purpose.
Key features of the N 250
Assessing dimensions and layout correctly
What matters is the relationship between external size, usable bench area, anteroom and conditions at the intended site.
Approx. 251 × 210 × 222 cm
The N 250 provides a spacious interior while retaining its distinctive, comparatively compact barrel form. Check the length, width and height separately at the proposed location; sufficient floor area alone does not show whether there is enough room at the sides and above the sauna.
Integrated anteroom
The separate entrance zone makes arriving and leaving easier, and prevents the exterior door from opening directly into the heated sauna room.
Approx. 195 cm internal height
The internal height helps you assess headroom when standing and rising from the benches. Taller people should therefore compare it with their own height and usual movements. Floor area alone is not enough for this assessment.
Approx. 12 m³ internal volume
The stated internal volume is an important reference point when selecting the intended heating solution and also shapes the sense of space in the N 250. It does not, however, describe usable seating area. To assess the actual room available, also consider the bench dimensions and internal height.
Materials and construction
Thermowood and barrel form: properties, use and care
The N 250 is made from FSC®-certified, thermally treated wood. Thermal treatment reduces moisture uptake and improves dimensional stability. This is helpful for an outdoor sauna exposed to changing humidity and temperatures. It does not make the wood maintenance-free, nor does it replace professional assembly. Standing water, a permanently poorly ventilated underside and unsuitable cleaning products can affect surfaces and, over time, the structure. A suitable base, reliable drainage, ventilation beneath the sauna and regular care are all equally important.
The rounded barrel shape influences more than appearance; it also affects site planning. As the exterior surface curves at the sides, it is not enough simply to leave a rectangular area matching the stated dimensions. Allow sufficient working and maintenance space around the sauna. Doors must open fully, and important components should remain accessible after assembly. Thermowood can complement timber decking, natural stone or a clean-lined garden design. For final positioning, however, practical and technical requirements take priority over visual integration.
Thermowood remains a natural material with individual variations in colour and grain. UV exposure and weather can alter its original tone over time. Whether you allow this natural colour change or treat exterior surfaces with a suitable product depends on the look you want and the maintenance effort you prefer. Use only products suitable for the timber and the particular application, and follow their processing instructions.
Heating and technical preparation
Choose a heating solution suited to volume and equipment
Before buying, check exactly which heating configuration is offered for the N 250. An electric version is among the available options. An electric heater suits users who want a controllable heating solution and can arrange the required electrical supply at the site. Personal preference is not the only consideration, however. The approved combination of heater, controls and any other accessories for this sauna, together with the relevant manufacturer installation requirements, is decisive.
Internal volume is an important starting point when selecting a heater. Construction, door areas and the installation intended for the model can also matter. Do not rely on a general rule of thumb; instead, check which heating solution is specified for your ordered N 250 version. Also clarify whether controls, sauna stones and every component required for installation are included in the chosen scope of supply. This helps avoid a sauna that cannot be commissioned after assembly because parts are missing or incompatible.
Electrical connections must be completed by a licensed electrical professional in accordance with the manufacturer’s instructions and applicable New Zealand requirements. Supply, protection, cable routing and the connection area must suit the selected version. Cables must not run unprotected across walkways or through places where water can collect. Include lighting and other electrical equipment in the overall plan so that improvised additions are not needed later.
Planning the site before assembly
Prepare the base, access and surroundings carefully
The N 250 needs a permanently level, load-bearing base suited to the construction. It must support the sauna’s own weight as well as the heater, sauna stones, equipment and users. An uneven or yielding surface can create stresses in the structure and affect door operation. Complete the base well before delivery and assembly, and check that it is level. Follow the assembly requirements rather than trying to compensate for height differences with leftover materials during installation.
Rainwater must be able to drain away from the site in a controlled manner. Persistent moisture must not collect beneath the timber structure, as even treated wood should not stand in water for extended periods. Consider not only light rain, but larger volumes flowing from nearby roof areas, paved paths or higher parts of the garden. Good airflow beneath the sauna helps it dry. At the same time, the foundation solution must remain stable and must not lose level through washout, ground movement or softening soil. Where ground conditions are uncertain, seek professional advice on a suitable solution.
Allow enough clear space around the entrance. The route to the sauna should remain safe to walk in darkness and wet weather, as users often have wet feet between sauna sessions. Avoid trip edges, loose stepping stones and surfaces that become very slippery when wet. Also consider the opening direction and full swing of the door. The exterior of the N 250 must remain accessible for cleaning, inspection and future maintenance. Tight enclosure by fences, walls or dense planting makes timber care harder and can restrict air circulation around the structure.
Interior, ventilation and ongoing care
Ventilate, clean and care for timber surfaces properly
After every sauna session, moisture remains inside from steam, breathing and wet skin. Give the sauna enough time to ventilate and dry completely afterwards. Use the intended ventilation provisions and follow the operating instructions. If the interior stays damp and closed for long periods, odours and unwanted deposits can develop. Do not alter components or make additional openings in the structure. The designed ventilation system must not be obstructed by cladding or objects placed directly in front of it.
During use, place sufficiently large sauna towels on seating and reclining surfaces so that as little perspiration as possible reaches the timber directly. Remove used towels, robes and floor mats from the sauna and anteroom afterwards. Regularly inspect the barrel bands, visible screw connections, door, fittings and seals. Do not tighten every connection as a precaution. Instead, watch for changes and address any identified issue in line with the assembly and care instructions.
In many cases, a soft cloth, suitable brush and timber-safe cleaner are enough for cleaning. Test a new product sparingly on an inconspicuous area before treating larger surfaces. Clean only cooled surfaces and allow the interior to dry fully afterwards. Aggressive chemicals, heavily perfumed household cleaners and pressure washers are unsuitable because they can roughen surfaces, leave residues or force water deep into joints. Remove dust and loose dirt from less visible areas too, without soaking technical components. For stubborn marks, follow the care guidance rather than sanding the affected area heavily and creating an uneven finish.
Coordinate ordering, delivery and assembly
Clarify supply, transport route and site requirements early
Check the selected product configuration item by item. Heater, controls, sauna stones and other technical accessories may depend on the offered version. What counts is the specific scope of your order, not equipment shown in a product photograph or on another model variant. Record which work must be completed on site and which components are needed only during assembly. This allows the foundation, electrical preparation and build to be coordinated sensibly. If you enquire about an assembly service, also clarify the conditions required on the agreed day and which preparatory work is not included.
The route from the unloading point to the final site is a planning step in its own right. Measure gates, passages and narrow garden paths, and account for steps, tight corners, covered areas, branches and sensitive surfaces. The external dimensions of the assembled sauna do not automatically show the space required to move individual delivery or assembly elements. Ensure the access route is clear and sufficiently load-bearing on delivery day. Vehicles or heavy components must not be taken over pits, underground installations or non-load-bearing areas without assessment.
Depending on the property and chosen equipment, building-consent requirements, district-plan controls, boundary considerations or electrical installation requirements may apply. Clarify these matters early with your council and relevant professionals. Do not assume that a compact sauna may be installed without further assessment. Property boundaries, existing buildings, underground services and local requirements can affect the site choice. Check building consent and resource consent separately, including foundations, services, fire separation and stormwater. Further preparation guidance is available under planning and installing a sauna.
Answers on selection and use
Frequently asked questions about the Bloomcabin N 250
Can the anteroom be used as permanent storage?
No. The anteroom is intended as a transition zone, not as permanent storage. Shoes, dry towels and robes can be kept within reach there during a sauna session. Remove damp textiles and floor mats afterwards and dry them completely. Ventilate the anteroom with the sauna area so moisture does not build up.
Can the N 250 be installed on an existing patio?
Only if the patio is level, permanently load-bearing and structurally suitable. It is not only the visible finish that matters, but also the supporting structure beneath it. Together, they must carry the sauna, heater, sauna stones, equipment and users; have this professionally assessed before installation. Drainage and ventilation beneath the timber structure must also work properly. An existing patio is therefore not automatically a suitable base.
What should I do if the door suddenly becomes difficult to close?
Do not tighten every connection as a precaution. First check whether the base, door fittings or visible connections have changed, then follow the assembly and care instructions. A base that is no longer level can be the cause, as can an adjustment required to the door. If the cause is unclear, have the structure professionally inspected.
Can the specified heater simply be replaced with another model?
Not without checking first. Sauna, heater, controls and installation clearances must work together as an approved combination. Similar appearance or comparable dimensions do not automatically make another appliance a suitable replacement. Before making any change, check the details for the N 250 you ordered and discuss the intended components with the supplier and the relevant professional.
What should be considered if the site is reachable only through the house?
Confirm feasibility explicitly before ordering. What matters is not only the exterior dimensions of the fully assembled sauna, but also the size and handling of delivery and assembly elements. Measure doors, passages, stairs, tight corners and covered areas along the entire route. Document the narrowest points so the transport route can be assessed clearly before delivery day. Also identify sensitive floors and areas that cannot carry loads; appropriate protection and transport measures must be agreed in advance.
When should an electrical professional be involved in planning?
Ideally before the base is built and cable routes are fixed. This enables supply, protection, routing and the connection area to be planned for the chosen electric version. The installation work itself must be carried out by a licensed electrical professional in accordance with manufacturer instructions and local requirements. This can avoid later disruption to the completed base.
Can the same timber-care product be used indoors and outdoors?
No, not as a general rule. Weather-exposed exterior surfaces and seating or reclining surfaces in a warm interior have different requirements. Use only products expressly intended for both the timber and the particular application. A general timber-care label is not sufficient. Unsuitable coatings can cause odours when warm or change the feel of the surface. Choose and apply products separately for indoor and outdoor surfaces, following the relevant application and drying instructions.
Decision guide for the Bloomcabin N 250
When does this model suit your garden and sauna habits?
The N 250 is a good choice for customers seeking a spacious thermowood barrel sauna with an anteroom and intending to make real use of the added space. The model is especially suitable where two people or a small group sauna regularly, a sheltered entrance area is wanted, and the site has enough room for the base, access and maintenance. Anyone who mainly saunas alone and has only a very small available area should consider whether a more compact model meets their needs just as well. The right decision comes not from maximising interior space, but from matching use, property and technical preparation.
If the preferred design or size is not yet clear, compare the N 250 with other outdoor saunas and barrel saunas from Bloomcabin.
Checklist before ordering
✓ External dimensions plus door, assembly and maintenance space marked out
✓ Bench area and internal height checked against actual users
✓ Level, load-bearing base and controlled drainage planned
✓ Heating configuration and electrical preparation professionally coordinated
✓ Order scope and customer-provided work fully checked
✓ Vehicle access, transport route and local requirements clarified early
View the Bloomcabin N 250