Naturo series · timber

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.

68depth [mm]
24-32glazing up to [mm]
3bonded timber laminations
4coats of lacquer
2sealing gaskets
0,99Uw [W/m²K] with double glazing*

* 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.

Greek profileGreekA pronounced moulded frame, for facades with traditional character
Perfil Belgium B RetroBelgium B RetroA rounded external edge and classic proportions — the profile most often chosen for refurbishment
DutchDutchA sharp edge with a small chamfer: a restrained, contemporary look
Outward openingOutward openingA sash that opens outwards, typical of older buildings and coastal construction

Profile section

Two junctions of the system to scale: frame, sash, glazing and seals. Click to enlarge.

Dimensioned horizontal section — Naturo 68
Dimensioned horizontal sectionFrame, sash and glazing in horizontal section, fully dimensioned.
Dimensioned vertical section of the Retro profile — Naturo 68
Dimensioned vertical section — Retro profileHead and sill junction of the Retro profile, with 24 to 32 mm glazing.

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 timberSolid pineNo visible joints, long sections free of natural defects, made for clear varnishes that show the grain
Finger-jointed laminated timberFinger-jointed laminateFinger-jointed pineDefect-free sections joined end to end by finger joints: maximum stability, ideal for opaque finishes

SKLO 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.

Structural timber glazing barStructuralTimber bars in the sash colour, physically dividing the opening into panes
Glazing bar inside the sealed unitInside the glassAluminium bars inside the sealed unit. Widths of 8, 18, 26 and 45 mm
Glazing bar bonded to the glassBondedBonded to the glass with a warm-edge or silver central spacer, in the sash colour

With 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 stain sampleRaw timber
Clear lacquer stain sampleClear lacquer
Stone pine stain sampleStone pine
Cypress stain sampleCypress
Oak stain sampleOak
Afromosia stain sampleAfromosia
Walnut stain sampleWalnut
Dark chestnut stain sampleDark chestnut
Wenge stain sampleWenge
Raw meranti stain sampleRaw meranti

Thermal 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.

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