Swisspearl Patina Structure NXT

Swisspearl Patina Structure NXT is a through-colored fiber cement board whose face carries regular, subtle linear grooves. The grooves form a refined, natural rhythm, and grazing light casts fine shadows across the texture.

It is the grooved member of the Patina NXT range, alongside Patina Original NXT and Patina Rough NXT. The board is sold for external and internal wall and ceiling coverings and is used as an outer rainscreen layer over a substructure and a backing wall. Its technical data is issued as version 12/25 under the AC 90 / ASTM 1185 / EN 12467 heading.

The surface treatment is linear surface structuring. Groove direction and the alignment of grooves across adjacent boards are the visible features of the face.

Differences in color shade, both within the product and from product to product, are part of the production process. Color variation is measured on the production line with the CIELAB model, where only lightness ΔL is monitored, at ΔE = ± 2.5 (ΔL -2.5 / +2.5). Color resistance to UVA over 3000 hours is ΔE 2.7. The color range carries a note that restrictions may apply.

• Material: through-colored fiber cement board.
• Surface structure: milled, with a linear groove pattern.
• Optics: uncoated.
• Color selection, by code: P 020, P 045, P 070, P 222, P 313, P 323, P 333, P 343, P 545, P 565 and P 626.
• Largo sizes: 8 mm thick, in 98.43 x 49.21 in and 120.08 x 49.21 in.

The surface forms a fine coating over time.

The product page for Patina Structure NXT links to invisible façade fasteners and visible façade fasteners as its two fastener categories.

The Largo format of Patina Structure NXT carries Cradle to Cradle Certified Full Scope, Bronze level, version 4.1. The assessment of Patina Structure NXT covers Material Health, Product Circularity, Clean Air and Climate Protection, Water and Soil Stewardship, and Social Fairness.

• Thickness options: 6 mm, 8 mm and 12 mm.
• Nominal width: 46.38 in and 49.21 in.
• Nominal length: 98.82 in and 120.08 in.
• Weight including 7.5 percent moisture: 2.13 lb/ft² at 6 mm, 3.05 lb/ft² at 8 mm and 4.47 lb/ft² at 12 mm.

Panels can be cut to custom dimensions for specific projects. Thickness tolerance up to 0.79 in is +/- 0.024 in at 6 mm and +/- 0.032 in at 8 mm. Width and length between 39.4 in and 63.0 in carry a tolerance of ± 0.3 percent of the nominal dimension, and length over 63.0 in carries +/- 2.0 in.

• Dry density, minimum: at least 87.4 lb/ft³ (ASTM 1186).
• Dry density, average: 96.8, 98.0 and 101.1 lb/ft³ for 6, 8 and 12 mm.
• Moisture content: 5 to 10 percent.
• Bending modulus of elasticity, average at ambient (EN 12467): 12.8, 13.7 and 13.7 GPa.
• Flexural strength, wet average: 3626, 3771 and 3771 psi; minimum class 2610 psi (ASTM 1186).
• ASTM 1186 rating: Type A, class IV.

• Air temperature in use runs from -40 to +80 °C.
• Coefficient of thermal expansion: 0.01 mm/m °C.
• Frost resistance: 100 cycles, RL > 0,75 (EN 12467).
• Water absorption (24 hours at 105 °C, 24 hours in water): below 25 percent.
• Moisture movement (ASTM 1186): 0.06 in.
• Water vapor Z-value: 2.4 GPa m² s/kg at 6 mm, 2.5 at 8 mm and 1.8 at 12 mm; Sd of 0.5 m at 6 and 8 mm; permeance of 7.2 USPerm at 6 mm and 7.0 USPerm at 8 mm.

Under EN 13501-1 the board is classed A2-s1, d0. ASTM E84 is listed as Class A (does not ignite), and NFPA 285 is listed as passed. Behavior of materials at 750 °C under ASTM E136 is listed as approved.

Impact testing under EAD 090062-01-0404 covers hard-body impacts of 1, 3 and 10 joules and soft-body impacts of 10, 60, 300 and 400 joules. The 8 mm board is classed in impact end-use Category II-a, and a note says the installation principles determine the classification.

Certifications are ISO 9001:2015 quality management, ISO 14001:2015 environmental management and ISO 45001:2018 occupational health and safety certification. The board is listed under M1 classification for VOC emission (EN 16516:2017 + A1:2020) and under REACH (EC) No. 1907/2006.

A Declaration of Performance with CE marking is issued under European Regulation No. 305/2011.