Garden offices: walls and insulation scope
Whether a garden office works through the year is decided by the whole building: wall, roof, floor, glazing, insulation, heating and the way it is assembled. Eurodita, a timber building manufacturer in Lithuania manufacturing timber buildings since 1994, supplies the timber structure prepared for insulation; the insulation material is bought locally. This guide sets out for a dealer where that line runs.
Eurodita does not state a thermal performance for a finished building, and a wall thickness on its own is not a thermal figure.
At a glance
The wall options for a garden office
A garden office can be ordered with a single-skin solid log wall, with a twin-skin wall or, for larger buildings, in glulam. Wall type and thickness are chosen per project, by budget and by what is technically possible. Windows and doors are Eurodita timber joinery in the IV45, IV68 or triple-glazed IV92 system.
- Solid log: 28x100, 34x100, 44x130, 58x130 and 70x130 mm, one machined log per wall course. A solid log model can be made in any of the 28, 34, 44, 58 and 70 mm profiles; the 19 mm profile is used only on the models catalogued with it.
- Twin-skin: 44-50-44, 44-100-44, 58-50-58 and 58-100-58 mm, two equal solid log skins with a cavity between them. Twin-skin is offered per project and confirmed in the quotation.
- Glulam: 70x130, 88x260, 135x260, 180x260 and 220x260 mm.
The twin-skin cavity and the insulation
The cavity is the space the insulation occupies. Eurodita supplies the timber structure prepared and configured for insulation and does not normally supply the insulation material itself. Insulation materials and the final insulation system are selected and provided locally, because national requirements and local practice differ.
Two consequences follow. A cavity dimension is not an insulation specification: 100 mm describes the void, not what goes in it. And the insulation, with everything that belongs to the insulation system as installed, is on the buyer's side of the scope. The same applies to the roof and the floor: the structure is prepared for insulation where required, and the material is local.
Published U-values of the timber wall element
The values below are preliminary U-values of the timber wall element alone. They are not a figure for a finished building and not a compliance result.
| Wall thickness | System | Preliminary U-value of the wall element |
|---|---|---|
| 28 mm | Solid log | 3.82 W/m²K |
| 34 mm | Solid log | 3.15 W/m²K |
| 44 mm | Solid log | 2.43 W/m²K |
| 58 mm | Solid log | 1.84 W/m²K |
| 70 mm | Solid log or glulam | 1.53 W/m²K |
| 88 mm | Glulam | 1.22 W/m²K |
| 135 mm | Glulam | 0.79 W/m²K |
| 180 mm | Glulam | 0.59 W/m²K |
| 220 mm | Glulam | 0.49 W/m²K |
No value is published for the 19 mm profile or for any twin-skin build-up. The same values stand on the wall profiles page.
What the local designer specifies
The envelope of the finished building is designed locally: insulation material and thickness, membranes, airtightness, ventilation, floor and roof build-up and heating. The limiting values that apply to a project are set by the building regulations of the destination, and the buyer's designer checks the wall as built against them. Eurodita provides the drawings, the specification and the technical data it holds.
Installation is agreed per project. Foundations and utilities are provided locally, and turnkey delivery is not part of the standard supply.
Frequently asked questions
Is a Eurodita garden office supplied insulated?
Eurodita supplies the timber structure prepared for insulation and does not normally supply the insulation material; a project scope can say otherwise. Insulation is selected and bought locally, because national requirements differ.
What is the U-value of a garden office wall?
Preliminary U-values of the timber wall element alone are published for the 28 to 220 mm profiles, for example 2.43 W/m²K for 44 mm and 1.53 W/m²K for 70 mm. They are not a figure for a finished building and not a compliance result. None is published for twin-skin.
What is the cavity of a twin-skin wall for?
The cavity of 50 mm or 100 mm is the space the insulation occupies. It is a dimension, not an insulation specification; what fills it is chosen locally.
Which windows and doors come with a garden office?
Eurodita makes its own timber windows and doors in the IV45, IV68 and triple-glazed IV92 systems, and timber sliding and bifold doors. Aluminium sliding systems are bought in from a specialist supplier.
How to prepare an enquiry
Send the model or the external dimensions, the wall written in full (for example 58x130 mm solid or 44-100-44 mm twin-skin), the joinery system, the intended use and the destination country. Say who supplies the insulation locally and whether a thermal figure is needed for approval.
Eurodita replies with a written quotation in EUR, excluding VAT and delivery, EXW Eurodita factory by default. Model dimensions are on the garden office size guide.