Fillers are designed for the repair of any hull imperfections, caused by collision or construction defects. These products can be applied at a very high film thickness and have very good sanding properties. Fillers are quite hard coatings, in order to resist damage, but must still be flexible enough to avoid cracking, particularly on sailing boats.

About fillers

Main characteristics are:

  • To level out and smooth the hull surface.
  • To help sanding works with minimum loss of thickness and volume.
There are different types of fillers, however Jotun Yachting recommends the use of Two component epoxy fillers due to its better waterproof barrier, low water absorption and degree of solvent resistance, compared to polyester fillers. Their hardness and flexibility are also significantly better. For underwater areas, only epoxy fillers can be used. 
It is important to note that fillers have to be applied between coats of primers (sandwich technique), in order to secure a total sealing of the filler coat. By doing this, the risk of water absorption and low gloss areas on subsequent coats due to solvent absorption is avoided.

Filler colours

Each component of Jotun Yachting epoxy fillers have contrasting colours in order to help mixing. The mixing is correct when a final homogenous colour is achieved and there is no trace of the original component colours.

Types of fillers

Jotun Yachting has three types of solvent free epoxy fillers. These are suitable for different types of use. Lightweight Filler is an ultra-light weight fairing compound for big repairs, Finishing Filler is a filler for smooth finishes and relatively small defects and Epoxy Repair, is a filler for spot repairs. The main difference between them is the type of finish they provide, their degree of hardness and waterproof properties. All of them are very easy to sand.