NBS Source
SPP Composite Cladding


Suitable for an over-clad solution to existing properties, or a part of a new build facade.


European Class B fire rated composite cladding. The Forest Stewardship Council (FSC®) certified cladding provides a hardwearing protective barrier and low maintenance eco-friendly cladding which recreates the textured look and feel of timber cladding.

A low maintenance, rot free alternative to traditional timber cladding and siding. Manufactured using FSC® certified timber and recycled high density polyethylene (HDPE) plastics.

Features and benefits:

  • Wood plastic composite cladding offers improved acoustic performance and thermal conductivity.
  • Can be installed vertically and horizontally.
  • Decorative rainscreen cladding profile.
  • Ultraviolet (UV) sun and water resistant boards will last for years without rotting, warping or splitting.
  • Anti-mould.
  • Easy to clean and minimal maintenance requirements.
  • Available in four contemporary colours.
  • Low life cycle costs.
  • Safe and durable.
  • 15-year residential warranty, 10-year commercial limited warranty.


Suitable for an over-clad solution to existing properties, or a part of a new build facade.

General information

Uniclass 2015

Pr_25_71_97_95 Wood-plastics composite weatherboardsPrimary


H21/10 Vertical timber weatherboarding

H21/110 Vertical timber weatherboarding

H21/111 Horizontal timber weatherboarding

H21/115 Vertical timber weatherboarding

H21/116 Horizontal timber weatherboarding

H21/15 Horizontal timber weatherboarding

Specification data - Wood-plastics composite weatherboards

Product Reference

SPP Composite Cladding


Cedar cladding

Nut brown cladding

Stone grey cladding

Tudor black cladding


Not required

L Shaped Trim 50 x 50 mm

L Shaped Trim 70 x 70 mm


Start clip

Standard product features

Technical characteristics:

  • Joist span: 400 mm.
  • Size: 3600 x 156 mm (Coverage: 142 mm).
  • Thickness: 16 mm.
  • Finish: Enhanced wood grain.
  • Weight: 5.8 kg.

- Performance:

  • Fire rating, tested to EN 13501-1: Reaction to fire B-s2,d0.
  • Swelling and water absorption, tested to CEN/TS 15534-1 Clause 7.3.3 EN 789: Swelling in thickness 0.69% and water absorption 1.75%.
  • Resistance to weathering (720 hours), tested to CEN/TS 15534-1 Clause 8.1.1 EN ISO 4892-2: Greyscale 4.
  • Resistance to fungi to ISO 16869: Rating 0, no growth.
  • Moisture resistance tested to CEN/TS 15534-1 Clause 8.5.1 EN 321: Thickness change 0.3%, bending strength 23.1 MPa, Residual: 94.4%.
  • Heat Reversion Tested to CEN/TS 15534-1 Clause 9.3 Annex F: 0.1%.
  • Expansion rate, House Method: 0.3-0.5%.
  • Neutral salt spray test to ISO 9227-2006: After 96 hours of testing there was no corrosion.
  • Freeze thaw testing, House Method: No visible blistering, cracking or chipping.
  • Density: 1277 kg/m³.
  • Resistance to indentation to EN 15534-1 Clause 7.5: Brittle Hardness 64.8 N/mm² Rate of elasticity recovery 74.5%.
  • Falling mass impact resistance to EN 15534-1 Clause 7.1.2: No surface crack occurred.

Product Options


- L Shaped Trim 50 x 50 mm:

  • Can be fixed directly onto finished surface. Suitable for finishing external corners.
  • Size: 3600 x 50 x 50 mm.
  • Finish: Brushed finish.
  • Weight: 0.5 kg.

- L Shaped Trim 70 x 70 mm:

  • Made from FSC® certified timber and recycled plastics. Suitable for finishing off window returns.
  • Size: 3600 x 70 x 70 mm.
  • Finish: Brushed finish.
  • Weight: 0.5 kg.

- Starter clip and screws:

  • Material: Electroplated M316 stainless steel.
  • Clip size: 25 x 34 x 7 mm.
  • Finish: Black.