Mold Repair:

Using Putty or Patching Paste

The following are recommended procedures for puttying or patching fiberglass:

1. Before grinding out a void to be puttied, wax the surrounding area to enable the excess putty to be removed easily with a putty knife. This will reduce the sanding process.
2. After completely burring out the gelcoat in a feathering motion, clean the area free from dirt, oil or contamination. Oils from your hands can cause the patch to fall out or create a dark ring around the patch.
3. Overfill the patch to compensate for shrinkage during the curing process.
4. Curing overnight is preferable, but if time is a factor, use a heat gun or heat lamp to speed up the curing process. Care should be taken when using this procedure. Overheating will burn the patched area and surrounding gelcoat.
5. Covering the patch with wax paper or P.V.A. will also speed up the curing process.
6. Ambient temperature should be no lower than 70° F.