How ACT Timbers are Constructed
Not all plastics are considered composites. When additional strength is required, many types of polymers (plastics) can be reinforced with structural materials to meet the higher performance demands. Only when a polymer is reinforced, is it considered a fiber-reinforced plastic (FRP) composite.
Composition by Weight
The main components in ACT composite timbers are:
- Recycled Polyethylene (HDPE) ≥ 80%
- Fiberglass Reinforcing Agent Content ≤ 20%
- Additives, including colorants and UV inhibitors ≤ 2%
ACT Timbers are manufactured using a process known as extrusion. The extruder is a screw driven machine that mixes and hears the components to be formed into the lumber product. The finished product is a solid, homogenous section that has fiberglass throughout to enhance the strength and stiffness of the timber. ACT lumber is custom-manufactured to order, and is available in a range of industry standard dimensions and lengths. In certain profiles, it can be manufactured in tongue & groove and ship-lap profiles, or to include fiberglass rebar within the lumber to further strengthen the finished product.