Specialist base installation
A sauna base should carry the floor or barrel cradles evenly, shed rainwater and leave safe access to the heater and electrics.
Illustrative image 50+ years
Family groundwork experience
Full 10-year
Written JustBases guarantee
Fully insured
Documents available
One clear price
Written foundation scope
Built for this application
Outdoor saunas range from compact barrel designs on timber cradles to insulated cabins with a complete floor. Their support requirements are therefore model-specific rather than interchangeable.
We install a level foundation to the sauna footprint and coordinate the entrance, ventilation, drainage and electrical route with the supplier's instructions.
Options, assessed properly
The methods below are possibilities to assess—not interchangeable specifications. We match the foundation to the product, loads, support points, ground and access.
Paving slabs
A sound, level slabbed area can suit many barrel and compact cabin saunas when it supports every cradle or bearer.
Often worth considering for: Smaller saunas on reasonably level garden sites
From £620 for 9' × 5' (45 ft² / 4.18 m²)
Concrete
A concrete pad provides full-area support and a durable surface for larger cabins or supplier specifications requiring a slab.
Often worth considering for: Insulated sauna rooms and installations integrated with a terrace
From £695 for 8' × 6' (48 ft² / 4.46 m²)
Ground screws
Screws and a designed frame can create a raised, ventilated platform without a full wet-poured base where the sauna supplier accepts it.
Often worth considering for: Sloping gardens and framed sauna cabins
Installed screws from £1,180 for 8' × 6' (48 ft² / 4.46 m²); frame quoted separately
Timber frame
A treated structural frame may follow the sauna bearer plan while lifting the floor above changing ground levels.
Often worth considering for: Lightweight cabins with a compatible floor design
From £840 for 8' × 6' (48 ft² / 4.46 m²)
These starting points come directly from the current JustBases pricing data. No VAT is added to the guide prices shown. Your quotation confirms the suitable system and exact scope.
Before installation
Provide the model-specific base diagram, especially for barrel saunas where cradle positions matter. The overall barrel length does not define every support line.
Heater installation, ventilation, clearances and electrics remain subject to their own supplier and competent-person requirements.
JustBases quotes the agreed foundation and groundwork. Product installation, specialist connections, commissioning and third-party design remain outside our scope unless the written quotation expressly includes them.
A simple route forward
Tell us about the outdoor sauna, approximate size and site. We will identify any useful supplier information.
We assess access, levels, support requirements and ground, then provide a clear written quotation.
Our team installs the agreed base and leaves it ready for the approved building or equipment installer.
Genuine customer feedback
"I couldn't recommend Craig highly enough! Communication prior to the job was outstanding even considering our ever changing goal posts. Craig and his team turned up exactly at the agreed time, were well presented, friendly and professional. The cleanliness, attention to detail and quality of the job was outstanding."
"Good standard of workmanship. Friendly and efficient. Prompt response for estimate and fitted into our timescale. Will be using the firm in future and thoroughly recommend them."
"Craig and his team were very professional throughout the job. They worked tirelessly and extremely hard. The job involved digging up a thick reinforced concrete base. Then creating a whole new base with precision engineering in preparation to accept a new building on top. The result was an excellent job all round."
Easy to start, free to ask
You do not need drawings or a finished specification before getting in touch. Send what you have and Craig will explain the useful next step.
Helpful details, if available
Talk to Craig
Craig will listen to what you are planning and help establish the foundation information that matters.
Online quote requests are normally answered within 24 hours, excluding weekends.
Just give us your contact details and a short description of what you want to build. We will guide you through the rest.
Your enquiry
Outdoor Sauna Bases installation
Straight answers
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