The simple answer is ‘We do not know!’
The oldest glassfibre laminates still in use were made in the late 1940’s and 1950’s. The oldest boats made from GRP are now over 50 years old and no deterioration in the GRP can be found. A Survey of GRP buildings by the BRE (Building Research Establishment) in 2001 found the condition of several GRP buildings around 25-30 years old to be structurally sound.
