{"id":8495,"date":"2016-06-01T11:39:04","date_gmt":"2016-06-01T09:39:04","guid":{"rendered":"https:\/\/woodenhottubsale.co.uk\/product\/luxury-spruce\/"},"modified":"2026-08-08T08:32:16","modified_gmt":"2026-08-08T06:32:16","slug":"polypropylene-hot-tub","status":"publish","type":"product","link":"https:\/\/www.woodenhottubsale.co.uk\/ie\/product\/polypropylene-hot-tub\/","title":{"rendered":"Polypropylene Hot Tub \u2013 TimberIN Nordic Flex\u2122 (160\u2013220 cm, Configurable)"},"content":{"rendered":"
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A smooth-lined tub with broad configuration freedom \u00b7 Made-to-order outdoor hot tub<\/p>\n

Polypropylene Hot Tub \u2013 TimberIN Nordic Flex\u2122 (160\u2013220 cm, Configurable): low-maintenance bathing from 1600 to 2200 mm<\/h2>\n

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The practical interior is separated from the natural exterior<\/h2>\n

Polypropylene creates a continuous, non-porous bathing surface that is straightforward to wipe and does not need the same water-side timber care as a traditional all-wooden tub. Timber cladding retains the garden character and can be selected for appearance and weathering behaviour. The broad diameter range is useful, but it should not encourage automatic upsizing: larger shells carry more water and take more energy to heat. Heater choice is equally important, with internal systems protecting outside space and external systems preserving more room for bathers.<\/p>\n<\/section>\n

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The full polypropylene size table<\/h2>\n

Nordic Flex has the broadest genuine configuration range in the hot-tub catalogue. Its non-porous polypropylene shell is available from 1,600 to 2,200 mm, and the technical sheet quantifies how rapidly water volume rises: the largest version holds roughly 1,600 litres more than the smallest. Closed polypropylene benches can reduce the published volume by around 25%, an important distinction for filled weight and heating rather than a minor furniture preference.<\/p>\n

\n\n\n\n\n\n\n\n\n\n\n
1,600 mm<\/th>\n4\u20136 bathers; approximately 1,800 L; 1,920 mm top outside; approximately 200 kg<\/td>\n<\/tr>\n
1,800 mm<\/th>\n6\u20138 bathers; approximately 2,280 L; 2,120 mm top outside; approximately 250 kg<\/td>\n<\/tr>\n
2,000 mm<\/th>\n8\u201310 bathers; approximately 2,800 L; 2,320 mm top outside; approximately 280 kg<\/td>\n<\/tr>\n
2,200 mm<\/th>\n10\u201312 bathers; approximately 3,400 L; 2,520 mm top outside; approximately 300 kg<\/td>\n<\/tr>\n
External height<\/th>\nApproximately 1,040 mm all sizes; bottom insulation adds about 70 mm<\/td>\n<\/tr>\n
Bench-volume effect<\/th>\nClosed polypropylene benches can reduce volume by approximately 25%<\/td>\n<\/tr>\n
Electric choices<\/th>\n6 kW default; 9\/12 kW and 15\/18 kW increases listed, subject to connection design<\/td>\n<\/tr>\n
Integrated wood heater<\/th>\n35 kW listed in the technical sheet<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n

Open the product technical sheet<\/a><\/p>\n<\/section>\n

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Configure in this order: occupancy, benches, heater, then appearance<\/h2>\n

Start with the people who will normally bathe. Next decide whether reducing volume with closed benches is desirable or whether open access and timber character matter more. External wood heat protects seating but needs garden space; snorkel heat saves outside space and occupies the tub; integrated heat gives a neat outline and more coupled servicing. Electric-only is controllable but slow on a cold multi-thousand-litre fill; hybrid gives flexibility with more infrastructure. The no-heater option is for a separately engineered system, not an incomplete order. Only after these choices should cladding and liner colour lead the discussion.<\/p>\n

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Decision<\/th>\nChoices currently selectable<\/th>\n<\/tr>\n<\/thead>\n
Inner diameter<\/th>\n1600 mm \u00b7 1800 mm \u00b7 2000 mm \u00b7 2200 mm<\/td>\n<\/tr>\n
Stoves<\/th>\nElectric heater \u00b7 External wood-fired stove, 316-grade steel, chemical resistant \u00b7 Hybrid: Electric + external wood stove \u00b7 Hybrid: Electric + internal wood stove \u00b7 Integrated (316) stainless steel 35 kW wood fired heater (PP) \u00b7 No heater \u00b7 Snorkel wood-fired, 316-grade steel, chemical resistant<\/td>\n<\/tr>\n<\/tbody>\n<\/table><\/div>\n<\/section>\n
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How to judge the long Flex option list<\/h2>\n

Wall\/bottom insulation and an insulated cover have the clearest energy benefit. Filtration becomes progressively more valuable with larger volumes because draining 2,800\u20133,400 litres after every short use is wasteful, but the water still needs testing and treatment. Hydromassage is the strongest spa upgrade; air massage is gentler; four LEDs suit 1,800\u20132,200 mm shells. Higher electric outputs shorten theoretical warm-up but may demand costly supply work. A smart kit is worthwhile for scheduled filtration or electric heat only where outdoor Wi-Fi is dependable.<\/p>\n

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What the current configurator identifies as included<\/h3>\n

Already included:<\/strong> Wooden round edge + wooden lid \u00b7 Insulated leather lid + edge from polypropylene instead of wood<\/p>\n

Included equipment is valuable because it establishes a usable baseline. Displayed builds may contain additional systems, so the accepted quotation should repeat every included item.<\/p>\n<\/div>\n

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Wood type<\/h3>\n
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  • Siberian spruce (already included)<\/li>\n
  • Siberian larch<\/li>\n
  • Thermo wood<\/li>\n<\/ul>\n

    Advantages:<\/strong> Spruce offers a light traditional finish; larch is denser and visually pronounced; Thermowood is darker and heat-treated; WPC gives a more uniform low-finish exterior where listed.<\/p>\n<\/section>\n

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    Electric heater<\/h3>\n
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    • Power level and connection type. Default 6 kW. Select from the table and inform us separately<\/li>\n
    • Power increase to 9 kW or 12 kW<\/li>\n
    • Power increase to 15 kW or 18 kW<\/li>\n<\/ul>\n

      Advantages:<\/strong> Electric heat offers repeatable thermostat control, no fuel storage and a clean holding routine; 9\u201318 kW upgrades can shorten recovery when the selected water volume and electrical design justify them.<\/p>\n<\/section>\n

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      Type of benches<\/h3>\n
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      • Wooden benches<\/li>\n
      • Wooden benches (sunny type)<\/li>\n
      • Polypropylene open benches<\/li>\n
      • Polypropylene close benches<\/li>\n<\/ul>\n

        Advantages:<\/strong> Open polypropylene benches retain inspection access and reduce visual bulk; closed benches displace water and can lower the volume to heat; shaped timber seating provides a more traditional material feel.<\/p>\n<\/section>\n

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        Type of stairs<\/h3>\n
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        • Basic 3 stage stairs (Ladder)<\/li>\n
        • "B" type stairs<\/li>\n
        • "A" type stairs<\/li>\n
        • "C" type stairs<\/li>\n<\/ul>\n

          Advantages:<\/strong> The correct stair creates a safer, more natural step over the hot-tub rim; broader A, A+ or C forms can provide a more generous landing beside a taller shell.<\/p>\n<\/section>\n

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          Insulation options<\/h3>\n
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          • Wall insulation<\/li>\n
          • Bottom insulation<\/li>\n<\/ul>\n

            Advantages:<\/strong> Wall and bottom insulation reduce heat loss from the water vessel and are particularly useful for frequent use, exposed sites and electric temperature holding.<\/p>\n<\/section>\n

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            SPA<\/h3>\n
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            • Air bubble massage system<\/li>\n
            • Hydro massage system<\/li>\n
            • Sand filtration system with big wooden cover box<\/li>\n
            • 2 LED<\/li>\n
            • 4 LED (Recommended for 180 – 220 cm models)<\/li>\n<\/ul>\n

              Advantages:<\/strong> Air massage gives a gentle whole-tub effect, hydromassage provides firmer targeted jets, filtration supports retained-water use and LEDs improve evening visibility and atmosphere.<\/p>\n<\/section>\n

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              Smart SPA equipment add-ons (WiFi signal required)<\/h3>\n
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              • Smart app \u2013 voice controlled system kit for air massage<\/li>\n
              • Smart app \u2013 voice controlled system kit for water massage system<\/li>\n
              • Smart app \u2013 voice controlled system kit for sand filter<\/li>\n
              • Smart app \u2013 voice controlled system kit for electric heater (enables scheduled control, ON\/OFF)<\/li>\n<\/ul>\n

                Advantages:<\/strong> App control can schedule electric support and make filtration, air massage or hydromassage easier to prepare before a planned soak, with separate control applied only to the systems selected.<\/p>\n<\/section>\n

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                Inside color<\/h3>\n
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                • White (RAL 9010)<\/li>\n
                • Black (RAL 9005)<\/li>\n
                • Blue (RAL 5012)<\/li>\n
                • Light Grey (RAL 7032)<\/li>\n
                • Dark Grey (RAL 7011)<\/li>\n<\/ul>\n

                  Advantages:<\/strong> Liner colour lets the visible bathing shell coordinate with the garden and can make the water appear lighter, deeper or more neutral without changing the tub geometry.<\/p>\n<\/section>\n

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                  Metal parts<\/h3>\n
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                  • Ash shovel and rake<\/li>\n
                  • Metal fence on the chimney (burn protection)<\/li>\n
                  • Stainless steel lid on the heater (only for inside stove)<\/li>\n<\/ul>\n

                    Advantages:<\/strong> A chimney guard reduces accidental contact risk, a heater lid controls access around the firebox, and dedicated metal tools make ash handling and routine stove care more orderly.<\/p>\n<\/section>\n

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                    Water release type<\/h3>\n
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                    • External water tap<\/li>\n
                    • External water tap + Quick adapter for garden hose set (12.5mm & 15mm)<\/li>\n<\/ul>\n

                      Advantages:<\/strong> An external tap gives better control over discharge, while the quick hose adaptor helps route water away from foundations, neighbours and soft landscaping.<\/p>\n<\/section><\/div>\n<\/section>\n

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                      Heating ranges from manageable to substantial across the four sizes<\/h2>\n

                      A single time cannot cover 1,800\u20133,400 litres and heater outputs from 6 to 35 kW. TimberIN\u2019s wood-fired manual gives broad 2\u20133 hour warm-season and 4\u20136 hour cold-season context, while a 6 kW electric heater on 2,280 litres adds only about 2.3\u00b0C per hour before losses. Closed benches, insulation and a cover reduce the load; wind and cold feed water increase it. Choose heater output from the confirmed volume and desired operating routine, then have the electrical or flue design approved before manufacture.<\/p>\n<\/section>\n

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                      Use the flexibility to solve the site, not to collect options<\/h2>\n

                      Start with normal occupancy, the measured access route and the maximum footprint available after allowing for steps, heater and maintenance. Then select a heating routine: wood for a hands-on heat-up cycle, electric support for scheduled holding, or a hybrid approach where both services are practical. Plan filtration and water care around frequency of use, especially at rentals. The base must support the full water load, and pipework, controls and drain points should remain accessible rather than being permanently hidden by decking.<\/p>\n<\/section>\n