Naturo 68
Ecological by nature, Naturo 68 is a timber window system with a 68 mm construction depth, for anyone who wants a contemporary solution without giving up the beauty of wood.
The profile is built from three specially prepared timber laminations: good structural performance at low weight, durability and a wide range of finishes.



















Technical characteristics
Reference figures for the system, measured in the laboratory and confirmed in our own production.
* Uw quoted for the 1230 × 1480 mm reference window with 4/16Ar/4one glazing in pine. The exact Uw for your opening depends on the dimensions, the timber species and the glazing chosen.
Window profiles
Four profile designs for the same system. The choice sets how the window reads on the facade, without changing thermal performance.
GreekA pronounced moulded frame, for facades with traditional character
Belgium B RetroA rounded external edge and classic proportions — the profile most often chosen for refurbishment
DutchA sharp edge with a small chamfer: a restrained, contemporary look
Outward openingA sash that opens outwards, typical of older buildings and coastal constructionProfile section
Two junctions of the system to scale: frame, sash, glazing and seals. Click to enlarge.
Choice of materials
Timber laminated in three or four layers is more stable than solid wood, does not move with humidity and allows arches and curved shapes.
Solid timberSolid pineNo visible joints, long sections free of natural defects, made for clear varnishes that show the grain
Finger-jointed laminateFinger-jointed pineDefect-free sections joined end to end by finger joints: maximum stability, ideal for opaque finishesSKLO technical note: above a 3 m opening, or with strong sun exposure, we recommend 80 mm laminate — the dimensional stability is worth the extra cost
Glazing bars
They give a window character and echo classical architecture. We choose the type according to the look you want and the energy performance required.
StructuralTimber bars in the sash colour, physically dividing the opening into panes
Inside the glassAluminium bars inside the sealed unit. Widths of 8, 18, 26 and 45 mm
BondedBonded to the glass with a warm-edge or silver central spacer, in the sash colourWith external aluminium cladding the bars are aluminium outside and timber inside — less maintenance, with the warmth of wood indoors
Available colours
Ten base stains, applied to the four timbers we work with. The full catalogue shows each tone on spruce, pine, oak and meranti, so you can compare the same colour across different grains.
Raw timber
Clear lacquer
Stone pine
Cypress
Oak
Afromosia
Walnut
Dark chestnut
Wenge
Raw merantiThermal performance
Uw of 0,99 W/m²K on the reference window with double glazing. Accepts glazing up to 32 mm, and the two sealing gaskets combined with the natural mass of timber also help to damp outside noise.
Applications
Single-family homes, refurbishment of heritage buildings, and projects where the joinery design is part of the architecture.
Finishes
Pine, meranti or oak, with your choice of stain or lacquer and a four-coat UV and water-repellent treatment applied in a spray booth.
Frequently asked questions
Quick answers to the most common questions about Naturo 68.
What is the thermal performance of Naturo 68?
With the glazing stated in the datasheet, Naturo 68 reaches a Uw of 0.99 W/m²K on the 1230 × 1480 mm reference window (4/16Ar/4one glazing, pine). Triple glazing improves the figure; we state the exact Uw for your opening in the quote.
What are the maximum dimensions?
Maximum dimensions depend on the opening type and the weight of the glazing chosen; our team confirms them at the survey stage.
Which colours are available?
Pine, meranti and oak, with your choice of stain or lacquer colour. Samples are shown in pine and meranti, so the final tone varies with the species and the grain.
What is the lead time and the warranty?
Manufacturing typically takes 6 to 8 weeks after the survey and order. Installation is carried out by our own team and the system carries a 10-year warranty.






