SerFibro Smooth Interior Fibre Cement Board

SerFibro Smooth Interior Fibre Cement Board is an autoclaved mineral composite manufactured from refined cellulose fibres, Portland cement and micronized quartz silicate. Engineered to EN 12467 Category C (NT Type, 100% asbestos-free), it replaces moisture-sensitive gypsum boards and combustible wood-based panels wherever high impact strength (Class 3, MOR ≥ 10.0 N/mm²), A1 fire safety and wet-zone dimensional stability are specified.

SF-SMOOTH-INT is produced across 22 standardized format-thickness combinations: 1250 × 2500 mm (3.125 m²) and 1250 × 3000 mm (3.750 m²) in 6, 8, 10, 12, 14, 16, 18 and 20 mm, plus the dedicated 1250 × 2800 mm (3.500 m²) floor-to-ceiling commercial partition sheet in 8, 10, 12, 14, 16 and 18 mm. Using 2800 mm sheets eliminates horizontal mid-wall joints in standard office, hotel and hospital storeys, accelerating drylining installation and reducing joint compound labour.

Classified under TX-SM-01 and TX-CL-01, the board features a smooth, homogeneous mineral plane with Level 1 tolerances: length ± 5 mm, width ± 3.75 mm, thickness ± 10% e, squareness ± 2 mm/m and edge straightness ± 0.1% a. Tight thickness calibration ensures flush board-to-board transitions behind thin-bed ceramic tile adhesives, decorative interior renders, acoustic wallcoverings or architectural interior paint systems.

Select Unprimed (natural cement grey) when boards will receive cementitious tile adhesives in wet rooms, mineral skim coats or industrial post-lamination where direct open-pore mechanical keying (~30% porosity) is preferred. Select Pre-Primed when partitions or ceilings are scheduled for direct interior painting or decorative finishing, equalising surface absorption and eliminating one on-site priming pass.

Boards are supplied with clean square edges suitable for expressed interior shadow joints, flexible polyurethane sealant joints, or taped flush interior jointing using compatible alkali-resistant fibre-cement joint compounds (follow system manufacturer instructions regarding stud stiffness and movement joints). Sheets cut cleanly using carbide-tipped or diamond circular saw blades with dust extraction.

Typical thickness selection by interior application: 6 mm for suspended or fixed ceilings and lightweight wall linings; 8–10 mm for standard metal/timber stud partitions, modular prefab interiors and bathroom/kitchen ceramic tile backing; 12–14 mm for hospital corridors, schools, shaft walls and heavy stone/porcelain tile substrates; and 16–20 mm for roof underlayment decks, dry screed subfloors and mezzanine load platforms. For direct rain-exposed exterior facades, specify SF-SMOOTH-EXT (Category A) instead.

Install on galvanized steel C-studs (typically 400 mm or 600 mm centres; 400 mm max recommended behind heavy wall tiles) using self-drilling winged or countersunk fibre-cement screws keeping minimum edge clearances per installation guide. In showers and wet zones, apply a continuous liquid waterproofing membrane and joint reinforcement tape over the board face prior to cementitious C2TE/S1 tile adhesive application.

Certified to EN 12467 Category C and EN 13501-1 Class A1 non-combustible (zero flame spread, zero flaming droplets and zero toxic gas emission), SF-SMOOTH-INT achieves Class 3 bending strength (MOR ≥ 10.0 N/mm²) at an apparent dry density of 1350 ± 50 kg/m³. Key building-physics parameters include thermal conductivity λ = 0.20 W/mK, low thermal expansion αt = 0.005 mm/mK, vapour diffusion resistance μ ≤ 30, ~30% porosity and saturated moisture movement of 0.5 mm/m.

Unit geometric areas are 3.125 m² (1250 × 2500 mm), 3.500 m² (1250 × 2800 mm) and 3.750 m² (1250 × 3000 mm). Remember that double-sided partitions require 2.0 m² of board per 1.0 m² of wall elevation (or 4.0 m² for double-layer acoustic/fire walls), plus 5%–8% allowance for doorway cutouts and perimeter trims.

Every thickness-format combination has a fixed export pallet count—for example 75 pcs (234.38 m²) on 1250 × 2500 × 8 mm, 50 pcs (175.0 m²) on 1250 × 2800 × 10 mm, and 50 pcs (187.5 m²) on 1250 × 3000 × 10 mm. At 1350 ± 50 kg/m³, an 8 mm sheet weighs approx. 33.8 kg in 2500 mm length; road trucks and 20 ft containers are loaded to payload limits using full-pallet multiples.

Keep pallets indoors on flat, dry bearers and allow boards to acclimatise to ambient room humidity for 24–48 hours before fixing and jointing so initial hygric equilibrium is reached prior to tiling or taping. Always lift sheets vertically off the stack and carry on edge with two operators.

SerFibro supplies full-pallet and mixed-thickness container/trailer loads from Türkiye under EXW, FCA, FOB, CFR, CIF, CPT or DAP terms. You can combine thin ceiling sheets (6 mm), partition formats (8–12 mm, including 2800 mm) and heavy subfloor boards (16–20 mm) within one consolidated project dispatch.

For consultant and fire-marshal submittals, SerFibro provides the EN 12467 Category C / EN 13501-1 Class A1 Technical Data Sheet, Declaration of Performance (DoP) and physical Unprimed / Pre-Primed A4 hand samples prior to purchase order confirmation.

Standard material quotations cover SerFibro Smooth Interior Fibre Cement Board in the confirmed dimensions and surface state along with export palletising. Upon request, our CFY Engineering & Architecture team also provides architectural project design, modulation consultancy, facade engineering, substructure coordination, and professional site application as dedicated items in your quotation.