{"id":2740,"date":"2021-09-07T07:57:19","date_gmt":"2021-09-07T07:57:19","guid":{"rendered":"https:\/\/www.woodenhottubsale.co.uk\/blog\/?p=2740"},"modified":"2026-01-29T11:31:31","modified_gmt":"2026-01-29T11:31:31","slug":"built-in-hot-tub-project-to-get-inspired-from","status":"publish","type":"post","link":"https:\/\/www.woodenhottubsale.co.uk\/blog\/built-in-hot-tub-project-to-get-inspired-from\/","title":{"rendered":"How to Build a Sunken Hot Tub on Your Terrace \u2013 Complete Installation Guide"},"content":{"rendered":"

Have you dreamed of creating a terrace with a built-in Nordic bath<\/a> in your garden? Or maybe you already have a spacious deck ready for a sunken hot tub to turn into your own wellness retreat? In this article, we\u2019ll walk you through the key steps to make that dream a reality.<\/p>\n

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Step 1: Choose the Right Hot Tub Model<\/h2>\n

Start by selecting the sunken hot tub model<\/strong> that best suits your space. You can compare all available options and dimensions in the technical datasheets<\/a>. These provide the full measurements and setup details essential for proper planning.<\/p>\n

Step 2: Prepare the Terrace Space<\/h2>\n

When designing your terrace, leave a dedicated space based on the chosen model\u2019s dimensions. A simple way to visualize the cutout area is by using cardboard to measure and mark the required space before construction begins.<\/p>\n

\"A<\/figure>\n

If you already have a deck, you can cut out a circular opening<\/strong> of the right size to insert your sunken hot tub seamlessly.<\/p>\n

\"A<\/figure>\n

Step 3: Support & Weight Considerations<\/h2>\n

A filled hot tub with bathers can weigh over 1000 kg, so it must rest securely on a stable base<\/strong> rather than hanging by the terrace edges. Most TimberIN sunken tubs come with a wooden support frame<\/strong>\u2014no extra support needed for installation.<\/p>\n

\"Built-In<\/figure>\n

Step 4: Plan for Stove, Heater & Accessories<\/h2>\n

If your tub includes accessories such as a wood stove, electric heater, massage jets, or filtration system<\/strong>, ensure easy side access for maintenance and servicing. These components are typically mounted around the exterior of the tub.<\/p>\n

For an external stove<\/strong>, the hose length is about 70 cm, and the stove should be positioned at the same level as the hot tub. For an electric heater<\/strong>, additional wooden panels are added, allowing the unit to sit securely next to the tub.<\/p>\n

\"Built-In<\/figure>\n

Step 5: Install a Filtration System<\/h2>\n

To maintain clean and hygienic water<\/strong>, a filtration system<\/a> is highly recommended. Changing 1000+ liters after each use is costly; a sand filtration system keeps the water fresh for 1\u20133 months. It plugs into a standard electrical socket and, when used with water disinfectants, ensures crystal-clear water.<\/p>\n

\"Hot<\/figure>\n

Step 6: Water Drainage Options<\/h2>\n

Choose your preferred water drainage system<\/strong>: standard plug drain, external tap, or a tap with a quick garden hose adapter. Learn more about drainage and connection options here<\/a>.<\/p>\n

\"Hot<\/figure>\n

Step 7: Level and Final Setup<\/h2>\n

Before installation, ensure the ground surface is level<\/strong> and free of debris. Once everything is ready, sink your hot tub, connect the accessories, fill it with water, and enjoy your private spa corner at home!<\/p>\n

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FAQ \u2013 Built-In and Sunken Hot Tubs<\/h2>\n

Do I need additional support for a sunken hot tub?<\/h3>\n

No. TimberIN sunken tubs include a wooden support frame<\/strong> that ensures full stability without extra construction.<\/p>\n

Can I use an external stove or electric heater?<\/h3>\n

Yes. Both options are compatible. The stove should be on the same level as the tub, while electric heaters are installed on added wooden boards.<\/p>\n

How do I keep the water clean?<\/h3>\n

Use a sand filtration system combined with water disinfectants. This setup allows you to change water every 1\u20133 months instead of after every use.<\/p>\n

What drainage options are available?<\/h3>\n

Choose between a plug drain, external tap, or quick-connect garden hose adapter.<\/p>\n

Do I need professional installation?<\/h3>\n

Not necessarily. Follow this guide for DIY installation, or contact a carpenter for custom decking and finishing work.<\/p>\n<\/section>\n\n\n\n