Factory Direct Wall Coverings for Uneven Walls

Product Overview

These wall coverings are manufactured as continuous rolls or panels designed to conform to substrate irregularities up to 15 mm depth without additional skim coating. The base material combines a polymer‑modified cementitious matrix with a reinforced fiberglass scrim, providing tensile strength of approximately 3.2 MPa and flexural modulus of 4.5 GPa. The system is intended for interior and semi‑exposed commercial environments where rapid installation and long‑term durability are priorities.

Unlike conventional wallpaper or thin veneer, the thickness ranges from 2 mm to 4 mm, allowing the product to bridge minor surface deviations while maintaining a flat finished appearance. The surface finish can be supplied as smooth, lightly textured, or with a custom pattern imprint, each defined by a specific surface roughness (Ra) value between 0.2 µm and 0.8 µm.

Material Composition

The core consists of a blend of Portland cement, calcium aluminate, and silica fume, comprising 68 % by weight of the dry mix. Polymer additives (styrene‑butadiene rubber latex) contribute 12 % to improve flexibility and adhesion to substrates such as concrete, brick, or existing gypsum board. The reinforcing scrim is made from alkali‑resistant E‑glass fibers with a nominal areal weight of 80 g/m².

Surface pigments are inorganic iron oxide based, providing UV stability with a ΔE color shift of less than 2 units after 500 hours of accelerated weathering (ASTM G155). The finished product exhibits a water absorption rate of less than 5 % by weight after 24 hours immersion, meeting the requirements for interior wet areas such as restrooms and kitchens.

Performance Characteristics

Compressive strength measured per ASTM C109 averages 22 MPa, ensuring resistance to impact loads typical in corridor environments. The product demonstrates a flame spread index of 0 and a smoke development index of 5 when tested according to ASTM E84, classifying it as Class A for interior wall finishes.

Thermal conductivity is approximately 0.45 W/(m·K), contributing to modest insulation benefits when applied over exterior sheathing. Vapor permeability is rated at 0.8 perm, allowing moisture to diffuse while preventing condensation buildup within the wall assembly.

Acoustic performance, evaluated via ASTM C423, yields a Noise Reduction Coefficient (NRC) of 0.15 for the smooth finish and up to 0.22 for the textured variant, indicating limited sound absorption but sufficient for reducing reverberation in office spaces when combined with other absorptive elements.

Installation Considerations for Uneven Walls

Substrate preparation requires removal of loose material and cleaning of dust, oil, or efflorescence. A primer compatible with cementitious bases (e.g., acrylic‑based bonding agent) should be applied at a coverage of 0.2 kg/m² to enhance adhesion. The wall covering is then adhered using a polymer‑modified thin‑set mortar with a minimum shear bond strength of 1.0 MPa.

Due to the material’s flexibility, it can accommodate vertical deviations of up to 15 mm over a 1‑meter span without cracking. Installation proceeds by pressing the sheet into the mortar bed, using a trowel to achieve uniform thickness, and sealing joints with a flexible silicone sealant rated for movement accommodation of ±25 %.

Curing time before light traffic is 24 hours; full mechanical properties develop after 7 days at 23 °C and 50 % relative humidity. The product can be painted with water‑based acrylics after the curing period, provided the paint’s permeability exceeds 1.0 perm to avoid trapping moisture.

Quality Assurance

Each production lot undergoes dimensional verification: thickness tolerance ±0.1 mm, width tolerance ±2 mm, and length tolerance ±0.5 % measured with laser calipers. Flexural strength is tested on three specimens per lot using a three‑point bend fixture, with acceptance criteria set at the 95 % percentile of historical data (≥3.0 MPa).

Surface finish consistency is evaluated by a gloss meter (60° geometry) ensuring values remain within ±5 GU of the target specification. Color uniformity is assessed using a spectrophotometer; ΔE between any two samples from the same batch must not exceed 1.5.

Random samples are subjected to accelerated aging (UV‑B 0.68 W/m², 60 °C) for 1000 hours; post‑exposure measurements of tensile strength and color shift must retain at least 85 % of initial values. All test records are retained for a minimum of five years and are available to customers upon request.

Customization Options

Thickness can be adjusted between 1.5 mm and 5 mm by varying the solid content of the mix, impacting both weight (approximately 1.2 kg/m² per mm) and flexural rigidity. Surface patterns are achievable via embossing rollers or digital printing, allowing corporate logos or specific textures to be incorporated with a minimum repeat of 50 mm.

Color matching follows the RAL or NCS systems; custom pigments can be developed with a lead time of two weeks for laboratory trials. Edge treatments include square, beveled, or radius profiles, each defined by a specific radius (e.g., 3 mm) to facilitate corner installations.

Packaging options range from standard 30 m rolls on cardboard cores to flat panels sized 1.2 m × 2.4 m stacked on pallets with interleaving polyethylene sheets. All packages are marked with batch numbers, production date, and handling instructions.

Packaging & Export Logistics

Rolls are wound with a tension of 5 N to prevent telescoping, then wrapped in shrink‑film (80 µm thickness) and placed inside double‑wall corrugated cartons rated for 25 kg stacking load. Palletized shipments conform to ISPM‑15 standards, with heat‑treated wooden pallets (HT) and corner protectors.

For containerized export, a 20‑foot dry container can accommodate up to 18 pallets (approximately 21 000 m² of product) when using standard roll dimensions. The total gross weight per container remains under the 24 000 kg limit, allowing compliance with most international weight regulations.

Documentation includes commercial invoice, packing list, material safety data sheet (MSDS), and certificate of conformity to the specified technical terms. All documents are provided in English; translations are available upon request.

Material Options Table

Frequently Asked Questions

Can dimensions be customized?

Yes. Width, length, and thickness can be tailored to project specifications. Custom sizes require a minimum order quantity of 500 m² and are subject to production scheduling.

What information is required before quotation?

To generate an accurate quote we need the total area, desired thickness, surface finish (smooth/textured/printed), color reference (RAL/NCS or sample), and any special edge treatment. Delivery destination and required incoterms help determine freight costs.

How is quality inspected?

Each lot undergoes dimensional checks, flexural testing, surface gloss measurement, and colorimetric analysis. Test reports are attached to the shipment documentation.

What packaging methods are available?

Standard packaging includes shrink‑wrapped rolls in corrugated cartons palletized with HT wood. Alternatives such as flat panel crates or reusable containers can be arranged for specific logistics requirements.

How are export shipments protected?

Cartons are strapped with polypropylene bands, corner boards are applied, and the entire pallet is stretch‑wrapped (20 µm) to resist moisture and shifting during transit.

What is the typical production lead time?

Standard items ship within 10‑15 working days after receipt of confirmed purchase order. Custom colors or patterns add 7‑10 days for laboratory trials and tooling preparation.

How are samples arranged?

Sample panels (300 mm × 300 mm) or roll sections (1 lm) can be dispatched via express courier at the recipient’s expense. Up to three free samples are offered per project; additional samples incur a nominal handling fee.

Request a Quote

Provide your project details—area, thickness, finish, color, and delivery location—to receive a formal quotation with lead time and payment terms. Our technical team will review the submission and respond within one business day.