Mechanical Installation Manual (450, 525, 600)

8.5. Fiberglass Hulls – Abrading Gel Coat


Note: This section is only for new build installations at the boat original equipment manufacturer (OEM) or for boats that meet the following criteria:

  • Purchased directly from the OEM.
  • Less than 6 months old.
  • Known history with virgin gel coat. The boat must never have been painted, repaired, or modified in any way.

If the boat does not meet these requirements, or if there is any uncertainty, follow Section 8.6.

Sand down the gel coat with 60 grit sandpaper to remove the gloss surface. You may use a Dual Action Sander (DA), but you must be extremely careful not to remove excess material. Note: It is important not to change the shape of the transom and to stay within the perimeter of the Transom Plate.

Figure 33 – Using DA Sander to Remove Glossy Surface