Division 01 — Spa & Design
Outdoor Saunas
Premium outdoor garden saunas, handcrafted for comfort, relaxation and timeless style.
Explore SaunasLondon · Peterborough · Across the UK
Craftsmanship for your garden and your home.
Two divisions, one standard of quality: premium outdoor saunas from Mastermat Spa & Design, and complete home renovations from Mastermat Build & Renovation.
Division 02 — Build & Renovation
Home Renovations
Exceptional home renovations, extensions, bathrooms, kitchens and complete property transformations.
Explore ServicesMasterMat Spa & Design
Bring the wellness retreat home.
Explore our outdoor sauna collection, thoughtful installation support and beautifully crafted spaces for everyday wellbeing.
Before installation · Step 2
Ground preparation and base
A properly prepared base helps your sauna sit level, remain stable and perform as intended. We can coordinate the groundworks and finish the surrounding space to complement your garden.
Every site is different. We start by reviewing the location, ground conditions, access and the sauna's requirements, then agree a practical preparation and finishing plan before work begins.
1. Site assessment & access
Check the proposed position, delivery route, working space, existing levels and any obstacles. Confirm the sauna footprint and access requirements before setting out.
2. Clear, set out & excavate
Prepare the work area, remove unsuitable surface material where needed and excavate to the agreed depth. Protect nearby planting, boundaries and existing services.
3. Sub-base, levels & drainage
Install and compact a suitable sub-base, establish accurate levels and consider surface-water run-off so water does not collect around the sauna or its base.
4. Foundation & finishing
Construct the agreed foundation or support system, allow materials to cure or settle as required, then complete the surrounding surface, edges and landscaping.
Concrete Slab
A strong, stable and level foundation. The slab specification and reinforcement, where required, are selected to suit the site and sauna load.
Timber Decking
A warm, natural-looking finish that creates an inviting platform and usable space around the sauna. Timber support and ventilation are planned for outdoor conditions.
Composite Decking
A modern, durable and low-maintenance option, available in a range of colours and finishes to complement the sauna and garden.
Outdoor Tiles / Paving Slabs
An attractive, practical finish with clean lines and a choice of formats and textures. The laying base and falls are planned for outdoor use and drainage.
Decorative Gravel / Decorative Stone
Add texture and contrast with decorative aggregates, stone borders and stepping pads. Suitable edging and ground preparation help keep the finish neat.
Bespoke Landscaping
Custom-designed surroundings tailored to your space, from paths and planting to retaining details, lighting and integrated seating.
The correct foundation depends on the sauna manufacturer's requirements, ground conditions, drainage and site layout. Final specifications and scope are confirmed following a site assessment. Any electrical work is arranged with appropriately qualified specialists.
Discuss your ground preparation →Mastermat Spa & Design
Our Outdoor Saunas
Choose from five standard models: Barrel Sauna, Cozy Igloo, Oval Sauna, Deluxe Medium or Everest Mini. Select one to view its specifications, standard design, exterior and interior. Custom sizes, finishes and layouts are shown separately as inspiration.
Compact & classic
Barrel Sauna
- Capacity
- 4–6 people
- Floor area
- 5.4 m²
- Size
- 2.7 m
Beyond the standard range
Make your sauna your own.
Our five standard models are the starting point. Depending on the design and supplier availability, we can explore larger formats, alternative glazing, mirrored finishes and additional spaces.
Mastermat Build & Renovation Ltd
Home Renovation Services
From garden rooms and summer houses to extensions, loft conversions and full home refurbishments, our team brings the trades together with care and attention to detail.
Why Mastermat
Built on quality, trusted for detail.
Every project — a garden sauna or a full renovation — is handled by the same experienced team, with the same attention to workmanship and finish.
Gallery
Gallery & Design Inspiration
Explore the five standard sauna models, examples of custom sauna variations, interior views and building work. The custom gallery shows ideas such as alternative sizes, glazing and layouts — not additional standard models.
Reviews
What Our Clients Say
Contact
Let’s Talk About Your Project
Whether you’re looking for a beautiful garden sauna or planning a complete home renovation, we’re here to help. Get in touch today for a free, no-obligation quote.
Telephone+44 7448 792304
Emailmastermatbuildltd@gmail.com
CoverageLondon, Peterborough and throughout the UK