Polywood and WPC Comparison

All Project WPC - Wood Plastic Composites   Huijun Polywood Lumber
Appearance Although WPCs contain wood they do not exhibit the colour grains or smooth texture of finished wood. Often, WPCs are covered in a heavy embossed texture to mask their gritty appearance. like real finished wood, embossed or not. But it is not wood.
Structure Due to their composite nature WPCs are open to absorb moisture. Closed cell homopolymer polystyrene that does not absorb water.
Mold Mold and Mildew grows on damp surfaces. Mold colonies will grow ideally where there is a constant source of moisture and the temperature is between 40 and 90° F. WPCs readily absorb moisture into the wood fibres that are often dried prior to manufacturing. it is not susceptible to mold.
Termites WPCs contain wood and absorb water so depending on their constitution, termites my be a problem for WPCs. It is impervious to termites as it contains no wood fibre or “food”.
Weatherproofing WPCs are known to fade drastically after short exposure to harmful UV rays. Polywood does not fade. Independent lab UV exposure testing shows a colour change of less than 2 (Delta E) after 1500 hrs (equivalent to 5 years) of UVCON exposure. The average consumer cannot detect a colour change (Delta E) of less than 2.
Swelling / Warping / Staining WPCs can swell, discolour and stain from moisture absorption. Polywood does not absorb water so it does not swell or warp from fluid retention.
Workability WPCs can be cut, sanded and screwed like wood. It can be cut, sanded and screwed like wood.
Painting and Sealing WPCs can be both painted and sealed. Priming may be required due to the wood content. It can be both painted and stained without priming.