Aluminium windows and doors

DECORATIVE LOUVRE SCREENS

Ten louvre profiles, each with its section dimensioned, and for eight of them the free visual area as well.

Lattices do two things at once: they filter the light and give the façade texture. The choice between references is made on a measurable criterion — the visual free area, that is how much of the field remains open to the eye, measured in two directions, A/C and B/C.

CORTIZO publishes eight references in the data sheet. Three of them are classified for wind: lattice 2747 and tubular louvres 2847 in Class 6, the maximum, and mini-lattice 2785 in Class 5.

The second criterion is the section of the louvre, because that is what gives the façade its rhythm: an 18 × 38 mm louvre reads as a fine stripe, a 30 × 190 mm one as a wide band. The manufacturer dimensions ten profiles — the eight in the data sheet, plus two more that appear only in the system drawings. You will find them all in the second table, with their dimensions.

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At a glance

The values that decide the choice

Profiles10 dimensioned references

Sectionsfrom 18 × 38 to 30 × 190 mm

Windup to Class 6 (maximum)

Free spanup to 2.0 m

Specifications

The data from the official data sheet

LATTICES – DECORATIVE LOUVRES

The eight references published by CORTIZO, with the maximum recommended free span and the visual free area in both directions.

The technical drawing of the system, published by CORTIZO

References, free span and visual free area

Type of louvre	Maximum recommended free span	A/C	B/C
Lattice (Ref. 2747)	2.0 metres	71%	44%
Decorative lattice (Ref. 2749)	1.5 metres	62%	34%
Clip lattice (Ref. 2829)	2.0 metres	100%	24%
Mini-lattice (Ref. 2785)	1.3 metres	55%	39%
Tubular louvres (Ref. 2847)	2.0 metres	76%	—
Decorative louvres (Ref. 9003)	1.0 metres	86%	—
Façade cladding louvres (Ref. 500500)	—	—	—
Façade cladding louvres (Ref. 770036)	—	—	—

Depending on the specification of the project a greater louvre length can be reached; consult the manufacturer. A/C and B/C are the visual free areas declared by CORTIZO in the two directions.

The louvre profiles and their sections

Reference	Type of louvre	Section (dimensions from the drawing)
Ref. 2785	Mini-lattice	18 × 38 mm
Ref. 2749	Decorative lattice	30 × 58 mm
Ref. 770220	Decorative lattice	30 × 60 mm
Ref. 2747	Lattice	78 × 58 mm
Ref. 2829	Clip lattice	34 × 100 mm
Ref. 2847	Tubular louvre	60 × 12 mm
Ref. 9003	Decorative louvre	30 × 190 mm
Ref. 500500	Façade cladding louvre	8 × 129,5 mm
Ref. 770036	Façade cladding louvre	26,2 mm
Ref. 770080	Shaped louvre	13,9 mm

The dimensions are those marked by CORTIZO on the drawing of each profile, in the order shown: first the horizontal dimension, then the vertical one. Which of them becomes the visible height depends on the position of the louvre in the frame. On Ref. 770036 and Ref. 770080 the drawing marks only one dimension, so we give only one — we have not filled in the other.

Classes achieved in testing

Lattice, specimen 2.0 metres (UNE 13659): Class 6 (maximum)
Mini-lattice, specimen 1.3 metres (UNE 13659): Class 5
Tubular louvres, specimen 1.3 metres (UNE 13659): Class 6 (maximum)
Tests to: standard UNE 1932
Testing verified by: ALUMINIOS CORTIZO S.A.U.

Finishes

Two-tone possible
Powder coating (RAL, mottled and textured), to Qualicoat >60 microns
Wood-effect coating, to the Qualideco standard
Anodising, to Ewwa Euras / standard class 15, optionally classes 20 and 25

Ref. 770220 and Ref. 770080 appear only in the profile drawings, not in the performance table: for them the manufacturer declares no free span or visual free area. That is why they are listed only in the sections table.

Download the data sheetOfficial CORTIZO data sheet – PDF · 226 KBLATTICES – DECORATIVE LOUVRES

The thermal transmittance values published by CORTIZO are minimum values for the system, conditional on the typology, on the dimensions of the joinery and on the glazing unit. The actual value of an assembly is established by calculation, on the configuration actually ordered.

From system to finished joinery

What we do with this system

Choosing the configuration

The system offers a range; the project asks for a value. We settle the version, the glazing unit and the typology from the actual requirements of the building, not from the maximum on the data sheet.

Calculation on the actual assembly

The transmittance of a window depends on the frame-to-glass ratio. We calculate it on the actual dimensions of the openings, not on the laboratory specimen.

Our own production

Cutting, machining, assembly and glazing in our own workshop in Baia Mare, on original CORTIZO profile and with hardware approved for the system.

Installation and handover

We install with our own teams, including abroad, and hand the job over with its documents. The warranty is the one published on our warranties page.

Next step

Do you want lattices and decorative louvres on your project?

Send us the window schedule or the drawings. We will come back with the right version from the family, with the thermal calculation on the actual openings, and with the price.

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Continuous