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Drying and post-cure. The object is to get the moisture content of the hull down to an acceptable level for relaminating. Post-cure is also desirable to dry/remove any uncured resin and osmotic fluids. The HotVac system which uses a combination of heat and vacuum is an efficient method of drying and post-cure. All internal moisture must be removed from the hull as soon as the vessel is slipped. Floors are lifted and air-flow through the interior is maximized by opening hatches, use of fans etc. The HotVac system is fast but a stabilisation period is recommended whereby the hull is allowed to air dry inside and out for up to a month. Sometimes, when moisture has penetrated stringers and other foam-filled structural areas, penetrating infra-red heat will be required. 100' Osmosis Repair (continued) |