I am posting this thread in order to get some advices. I performed my deck lamination by using free laps technic with polyester UV cure resin. Unfortunatly, I got some air bubbles that I removed by sanding them. I would like to know if it is necessary that I add some fiberglass where I removed air bubbles or do you think I can fix it when I do the hot coat. There are also some lil gaps between my free laps and my bottom. Should I sand or i can fix it with hot coat? Herewith some pics.
…always is better to use fiberglass instead of filling with resin; resin is a glue not provide mechanical resistance there. Imagine that if that lap was correct, you ll have all fiberglass there, so is a must to complete with that.
use lamination resin, then apply sanding resin with a brush in all that lap, (wider than the lap) then sand it off, then proceed with the hot coat or with the fins if you will do glass on fins.
Thanks so much for your advices. I will do as you recommend. Just one question about the hot coat, regarding greenlight amount resin chart, it says for a board lenght 5’ to 5’5, minimum 7 oz - max 12 oz. Do you think with 7 oz it will be enough to hot coat my 5’4?
Depends on how much resin soaked in the lamination; sometimes when the weather is too hot and the lamination is too dry for different reasons, is better to do an small cheater coat with lam resin ans squeegee. Very small amount but is good to get rid of possible micro bubbles and let a good bed (when is not done in time or the lam is too dry) for the fill coat.
So for a bottom polyester hot coat is ok with that amount.
Do not forget to sand pretty well those laps before the bottom hot coat.
Just one question about the hot coat, regarding greenlight amount resin chart, it says for a board lenght 5’ to 5’5, minimum 7 oz - max 12 oz. Do you think with 7 oz it will be enough to hot coat my 5’4?
With poly the first few times use more than you think is enough then next time you’ll have something to guage it by. With uncatalyzed UV cure you could put excees back in the can if you wanted. Although I would recommend using cat for hotcoat
Thx for advices. Very useful. I will follow your advice. I am still sanding my free laps by hand. It takes a longtime. I have grinder which has 7000 rpm, but I think it too “agressive” to sand with it, I fear to burn the laps.
