Defects and Damage
Blisters under the paint on an aluminium hull — is that pitting?
On aluminium a blister under paint is usually not cosmetic; it is pitting corrosion showing through. It should not be confused with osmosis blistering on GRP — the mechanism and the consequence are entirely different.
Why it works this way
The suspect area is opened, cleaned and the remaining section confirmed with an ultrasonic reading. Painting over it without that step buries an active process.
Related services
Serkan Kotel · independent yacht surveyor · IIMS · ABYC · MCA
