Wall Cladding Materials

This family groups wall and facade cladding that is specified as a system: panel format, fixing method, joint design, and the exposure class it is asked to meet. Fiber-cement, metal, WPC, and porcelain slabs sit here because the decision is usually between those systems, not between stone types.

Guides in this family stay with ranges and source documents. Appearance photographs do not replace a current datasheet or the local code path for the wall they are mounted on.

Seven cladding categories: formats, weights and systems

The figures below describe named products in the cited documents, not minimum-to-maximum weights for an entire material category. Ranges span the listed product options; a single value is shown where only one format is documented. They exclude rails, fasteners, mortar, insulation and the rest of the wall unless a source expressly includes them. Ask for the current local datasheet before calculating structural loads or ordering.

Standards identify a product category; local rules govern the wall

EN 14915:2013+A2:2020 addresses characteristics and marking for solid-wood interior panelling and exterior cladding. It does not cover panels serving as stiffening elements. In the US, the locally adopted IBC Chapter 14 addresses exterior walls and veneer, with wood-specific provisions; Chicago’s published Chapter 14 amendments illustrate why the jurisdiction and edition must be checked. Neither reference establishes that the Australian cedar example above is approved for a particular US or European project.

ASTM D3679-25 covers extruded single-wall rigid-PVC siding and directs installation to the specific manufacturer’s instructions. It is not a blanket standard for every foamed-PVC board, WPC product or interior decorative panel; the Fortex weight examples are not presented as D3679-certified products. Other material guides explain their applicable product specifications and system evidence. A product standard, a surface fire test and approval of a complete exterior wall answer different questions.

Texture and layout are a separate choice

Board width, joint spacing, panel orientation, stone relief and coating gloss change how the elevation reads. Use samples and a facade mock-up to assess those choices after establishing the installation system. A woodgrain surface can belong to PVC, WPC or coated metal; appearance alone does not identify its composition, weight or fixing method.

What a cladding quote is made of

A low price per square foot for the panel does not make a cheap wall. Most of what separates two cladding quotes sits outside the panel price:

• The facing material, including corners, edges and trims. State whether corners and flats use different ordering units.
• The support system — battens, rails, clips, carriers, anchors, or an engineered support for an anchored veneer.
• Water management — the water-resistive barrier, drainage provision, flashing at openings and terminations, closures and trims.
• Labour and site controls — handling of large formats, and dust control when fiber cement is cut, which OSHA’s silica standard regulates.
• Fire compliance — where NFPA 285 is required, the price of the insulation, barrier and cavity in a tested assembly, not only the panel.
• The maintenance cycle — site-finished fiber cement enters a repainting cycle, sealed stone a resealing interval, and metal coating warranties are separate from panel warranties.

Checklist for comparing two cladding quotes

1. Do both quotes cover the same wall area, with corners, trims and openings counted the same way?
2. Is the support system — battens, rails, carriers or anchors — included and named?
3. Are the barrier, drainage provision and flashing included, or assumed to be by others?
4. Where a fire-tested assembly is required, does the quoted build-up match that assembly?
5. Is the finish factory-applied or site-applied, and what maintenance cycle does it commit to?
6. Does each quote name the product, format and datasheet revision it was priced on?

Work through these before comparing totals. For the framework behind comparing installed cost with the maintenance cycle, see Porcelain Slab vs Natural Stone and fiber cement compared with metal.

Where the decision continues

Choosing between these types for a specific building — climate, fire requirement, substrate — is covered in Best Materials for Exterior Walls. Detailed specifications for each type stay on the individual material guides listed below.