Reinforced mats are manufactured from continuous strands in a non-woven pattern deigned to provide equal distribution in both longitudinal and transverse directions. The strands are deposited in a swirl pattern and are held together that are non-soluble in the resin matrix utilized. Continuous strand mats are made from either E-Glass or A-Glass with binders.

C-Glass, A-Glass and thermoplastic are some of the surfacing materials used in pultrusion. Polyester veils are the most commonly used surfacing fabrics and provide an 4 to 28 mil resin-rich barrier that improves corrosion resistance, reduces fiber exposure on the the surface and improves resistance to UV attack.