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 freedom of movement than in a compact two-person sauna, plus a separately enclosed anteroom. It is particularly suited to couples, families and small groups who enjoy regular sauna sessions together. Its generous bench area allows varied seating positions, while the anteroom separates the hot sauna space from direct access outdoors. This creates a practical transition zone without giving the sauna the scale of a large sauna house. Despite its compact barrel shape, the N 250 needs a carefully prepared site with room for access, installation and future maintenance. The following sections explain the external and internal dimensions in more detail.
The guidance below helps you assess space, siting, heating, installation and ongoing care realistically. To compare different sizes or designs first, explore further models in the Bloomcabin sauna range.
Everyday space and layout
More room than the N 210, without the footprint of a large sauna house
The N 250 combines the classic barrel form with a separate anteroom and clearly defined sauna area. The extra space is particularly noticeable when several people are seated together, change position, or prefer not to sit closely side by side during a longer session. The model also offers welcome room for two people, which external dimensions alone cannot fully convey. When choosing, consider not only the usual number of bathers but also how you prefer to use the sauna. Those who like to change seats, want more personal space or spend longer in the cabin benefit more from the additional room than someone taking short solo sauna sessions.
The N 250 remains considerably more manageable than a large garden building with a sauna room. Its bench area measures approximately 180 × 198 cm, allowing different seating arrangements and greater distance between users. Check whether this area suits your height, preferred sitting position and desired personal space. The measurements show the available area but cannot predict your individual sense of roominess. 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 serves a different purpose from the heated interior. It creates a sheltered transition when entering or leaving the sauna and reduces direct air exchange with the sauna area when the outer door opens. Keep the entrance and door swing areas clear so stored items do not obstruct the way. Plan a suitable resting place and somewhere 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
What matters is the combination of 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 intended site; sufficient floor area alone does not confirm that the sauna has enough clearance at the sides and above.
Integrated anteroom
The separate entrance zone makes arrival and departure easier and prevents the external door from opening directly into the heated sauna room.
Approx. 195 cm internal height
Internal height helps you assess headroom when standing or rising from the benches. Taller users 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 describe usable seating area. Assess actual capacity using the bench-area dimensions and internal height as well.
Material 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 absorption and improves dimensional stability. This is useful for an outdoor sauna whose construction is exposed to changing humidity and temperatures. It does not make the wood maintenance-free, nor does it replace correct assembly. Standing water, a permanently poorly ventilated underside and unsuitable cleaners can affect the surfaces and, over time, the structure. A suitable base, reliable drainage, good ventilation beneath the sauna and regular care are equally important.
The rounded barrel form influences not only appearance but also site planning. Since the outer surface curves at the sides, it is not enough simply to reserve a rectangular area matching the external dimensions. Allow enough working and maintenance space around the sauna. Doors must open fully and important components should remain accessible after installation. Thermowood can complement timber decks, natural stone or a clean-lined garden design. At the final location, however, practical and technical requirements take priority over visual integration.
Thermowood remains a natural material with individual colour and grain variations. UV exposure and weather can alter its original tone over time. Whether you allow this natural ageing or treat the exterior surfaces with a suitable product depends on the appearance you want and the level of maintenance you accept. Use only products suitable for the wood and intended application, following their instructions for use.
Heating and technical preparation
Choose heating to suit internal volume and equipment
Before purchase, check carefully which heating configuration is offered for the N 250. An electric version is among the available options. An electric heater suits users wanting controllable heat and able to have the required electrical supply installed at the site. Personal preference is not the only consideration, however. The approved combination of heater, controls and any further accessories for this sauna, together with the relevant manufacturer installation requirements, is decisive.
Internal volume is an important starting point for heater selection. Construction, door areas and the installation intended for the model may also matter. Do not rely on a general rule of thumb; check which heating solution is specified for the ordered N 250 version. Also confirm whether controls, sauna stones and every component needed for installation are included in the selected package. This helps prevent the sauna remaining unusable after assembly because components are missing or incompatible.
Electrical connections must be completed by a competent, legally registered local electrical contractor in line with manufacturer instructions and applicable site requirements. Supply cable, protection, cable routing and connection area must suit the selected version. Cables must not run unprotected across walkways or where water can collect. Include lighting and other electrical loads in the overall plan so that improvised additions are not needed later. Arrange the required inspection, testing and applicable CoC documentation with the contractor.
Site planning before installation
Prepare the base, access and surroundings carefully
The N 250 requires 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 base can place stress on the structure and affect door operation. Complete the base well before delivery and installation, and check that it is level. Follow the assembly requirements rather than improvising with leftover materials to compensate for height differences during construction.
Rainwater must be able to drain away from the site in a controlled manner. Persistent damp must not collect below the timber construction, because even treated wood should not stand in water for long periods. Consider not only light rain but also heavier flows from nearby roofs, paved paths or higher garden areas. Good ventilation beneath the sauna assists drying. The foundation solution must remain stable and must not lose level through washout, ground movement or softening soil. Where ground conditions are uncertain, obtain professional advice on the suitable construction.
Allow sufficient clear space around the entrance. The route to the sauna should remain safe to walk on in darkness and wet weather, as users often have wet feet between sessions. Avoid trip edges, loose stepping slabs and finishes that become very slippery when wet. Also consider the door opening direction and full swing area. The N 250 must remain externally accessible for cleaning, visual checks and later 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
After every sauna session, steam, breathing and wet skin leave moisture inside. Give the sauna sufficient time to ventilate and dry completely afterwards. Use the intended ventilation provisions and follow the operating instructions. If the interior remains damp and closed for long periods, odours and unwanted surface growth can develop. Do not alter components or create additional openings in the structure. The designed ventilation system must not be blocked by cladding or objects placed directly in front of it.
Use adequately sized sauna towels on seating and reclining surfaces so that as little perspiration as possible reaches the timber. Remove used towels, bathrobes and floor mats from the sauna and anteroom afterwards. Inspect barrel bands, visible screw connections, door, fittings and seals regularly. Do not tighten every connection as a precaution. Instead, look for changes and address identified issues according to the assembly and care instructions.
For cleaning, a soft cloth, suitable brush and timber-safe cleaner are often enough. 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: 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 intensely and creating an uneven finish.
Coordinate order, delivery and installation
Clarify contents, transport route and site requirements early
Check the selected product configuration item by item. Heater, controls, sauna stones and other technical accessories can depend on the version offered. Your order’s specific contents, rather than equipment shown in a product photograph or another variant, are decisive. Record which work must be completed on site and which components are needed only during assembly. This allows the base, electrical preparation and build to be coordinated sensibly. If you enquire about an installation service, clarify availability, location, cost, timing, requirements for the agreed day and which preparatory work is excluded.
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, allowing for stairs, tight corners, covered areas, branches and sensitive surfaces. The external dimensions of the completed sauna do not automatically show the space individual delivery or assembly elements need in transit. Ensure access is clear and adequately load-bearing on delivery day. Vehicles or heavy components must not cross drains, underground installations or unsuitable surfaces without prior assessment.
Depending on the property and chosen equipment, municipal building controls, building lines or electrical-installation requirements may apply. Clarify these matters early with the relevant municipality and qualified professionals. Do not assume that a compact sauna can be installed without further assessment. Use, enclosure, roof, size, services, siting, boundaries, existing buildings, underground services and local requirements can influence the location. For Cape Town projects, consult the City’s building-plan route and District Planning Office; elsewhere use your municipality’s own process. Further preparation guidance is available under sauna planning and installation.
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 permanent storage. Shoes, dry towels and bathrobes can be kept within reach there during a sauna session. Remove damp textiles and floor mats afterwards and dry them completely. Ventilate the anteroom together with the sauna area so moisture does not accumulate.
Can the N 250 be installed on an existing patio?
Only if the patio is level, permanently load-bearing and structurally suitable. The visible finish is not the only consideration; the supporting substructure matters too. Together, they must carry the sauna, heater, sauna stones, equipment and users, so have this professionally assessed before installation. Drainage and ventilation beneath the timber construction 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 all connections 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 a door adjustment that is needed. If the cause is unclear, have the construction professionally checked.
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 suitable. Before any change, check the details for the ordered N 250 and confirm the intended components with the supplier and relevant qualified professional.
What if the installation site is accessible only through the house?
Confirm feasibility explicitly before ordering. What matters is not only the external size of the assembled sauna, but also the size and handling of delivery and assembly components. Measure doors, passages, stairs, tight corners and covered areas along the entire route. Document the narrowest points so the transport route can be assessed properly before delivery day. Also identify sensitive floors and surfaces that cannot bear loads; suitable protection and transport measures must be agreed in advance.
When should the electrical contractor be involved in planning?
Ideally before the base is made and cable routes are fixed. This allows the supply, protection, cable routing and connection area to be planned for the selected electric version. The work itself must be carried out by a competent, legally registered electrical contractor in accordance with manufacturer instructions and applicable local requirements. This helps avoid later disruption to the completed base.
Can the same timber-care product be used inside and outside?
No, not as a general rule. Exposed exterior surfaces and seating or reclining surfaces in the warm interior have different requirements. Use only products expressly intended both for the timber present and for the specific application. A general timber-care label is not sufficient. Unsuitable coatings can cause odours when heated or alter the feel of the surface. Select and apply products separately for interior and exterior surfaces, following the relevant application and drying instructions.
Choosing 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 anteroom and intending to make real use of the extra room. It is especially suitable when two people or a small group sauna regularly, a sheltered entrance area is wanted, and the site offers enough space for the base, access and maintenance. Those who mainly sauna alone and have only a very small installation area should consider whether a more compact model meets their needs just as well. The right choice comes not from maximising interior space, but from matching use, property and technical preparation.
If the preferred design or size is still undecided, compare the N 250 with further outdoor 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 water drainage planned
✓ Heating configuration and electrical preparation professionally coordinated
✓ Order contents and customer-supplied work fully checked
✓ Access, transport route and local requirements clarified early
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