Re: gluvit ?
From their website.. (5 to 1 is the ratio)
Directions
1. Remove contaminants* such as grease, oil, dirt with lacquer thinner or strong detergent. Sand to bare surface with 80-100 grit sand paper to ensure adhesion. Remove all grit and dust after sanding with another rinse of solvent. *When cleaning aluminum surfaces an Aluminum Prep Wash can aid in scarifying the surface.
2. Fill deep holes (more than 1/8" in depth) with Marine-Tex Epoxy Putty before applying Gluvit.
3. Pre-proportion sufficient resins and hardener in the correct ratio to cover the areas to be sealed and/or repaired. Gluvit can be broken up into separate batches if desired. Mix ratio by volume for batches is 5 parts resin to 1 part hardener. If you will be using the entire kit at once, add the entire contents of the hardener into the resin and thoroughly mix contents for 3-4 minutes to insure complete mixing. Be sure you can use the entire kit within the pot life or working time period.
4. Apply Gluvit with a brush or roller at 6-8 mils film thickness. Lightly drag a foam brush in long even strokes over the freshly applied coating to smooth the surface. After the first coat cures for 12 hours at 72?F, a second coat can be applied for optimum performance.
5. Gluvit hardens overnight. Allow 48 hours at 72?F for maximum strength. Working time and cure will be longer at lower temperatures, shorter at higher temperatures. Note: If ambient temperature is below 50?F, pre-condition Gluvit and work area to at least 55?F.
Gluvit offers an open time of about 60 minutes at 72?F to provide adequate working time for larger jobs, such as an entire deck or hull. Gluvit cures in 24-30 hours at 72?F. Apply heat to speed cure if necessary or if the temperature will be below 55?F.
Gluvit may be applied over mildly damp (not wet) surfaces. Do not apply Gluvit when rain is pending. In the uncured state, Gluvit will absorb rain water, turn milky white, and take longer to cure - but it will harden in time.
To overcoat Gluvit after cure, wash the surface with warm soapy water or a dilute vinegar solution and a fine abrasive pad, or wet sand, then dry with clean towels or cloth. Frost-sand surface with 80-100 grit sand paper to remove any gloss. Gluvit can be overcoated with any marine paint or other coating compatible with epoxies.
Polyester resins, like gel-coat, do not adhere well to epoxy material.