The Estholz Garden House WILLIAM delivers a fully insulated, modular solution for modern garden living.
Designed with premium materials and a clever structure , it installs in just 7 to 8 hours without cranes or complex tools.
The WILLIAM arrives as a ready-to-build system complete with i nsulated walls, flooring, ceiling, doors , and windows , all pre-cut and assembled off-site for a smooth setup.
Customise the layout by choosing the position of the windows and doors, and finish the interior and exterior in any RAL colour to suit your style.
Its eco-conscious construction features rock wool insulation and solid spruce elements for year-round thermal comfort.
Whether you’re creating a stylish home office, peaceful retreat, or elegant guest room , the WILLIAM adapts beautifully to your needs.
It’s a versatile upgrade that makes your garden more functional, more comfortable, and undeniably more stylish.
- Smooth 7–8 Hour Installation : Thanks to its pre-assembled modular parts, two people can complete installation in under a day, no cranes required.
- Fully Insulated Comfort : With 70mm mineral wool in the walls and 100mm in the ceiling and floor, your space stays cosy in winter and cool in summer.
- Customisable Layout and Finish : Choose your preferred window and door placement and finish the interior and exterior in your favourite RAL colour.
- Solid, Sustainable Materials : Crafted from robust spruce wood and finished with Forestia panels that meet strict EU environmental standards.
- Durable Laminated Glazing : Comes with 5mm laminated glass for strength and insulation; mirrored or double-glazed ISO (4+15+4) glass is also available.
- Choose Your Roofing : The roof structure is ready for your preferred cover (e.g., SBS or EPDM), with a load-bearing capacity of up to 90 kg/m².
- Manufacturer Warranty Included : Comes with a 2-year manufacturer warranty for peace of mind.
