Chopped Strand Mat 600gsm - 10mtr Pack
CSM is the acronym for one of the most widely used type of fibreglass sheets, which is Chopped Strand Mat. One way to distinguish chopped strand mat from other types of fibreglass sheets is that it follows an arbitrary kind of pattern, while most varieties are woven and have clear, definite patterns. Because of this unique nature of CSM, it is often used as the primary layer, put directly on top of the surface which has to be fibreglassed. The arbitrary pattern of chopped strand mat fibreglass allows for better absorption of resin, thus allowing you to use much less than other sheets would require you to. Apart from that, it is a popular choice because of its price.