spray in foam deck repair

[smj]

https://youtu.be/WWQRZpah_0M

[capt jgw]

Originally Posted by Manateeman

Not enough info here. Pictures please. Above advice correct.
What is extent of wet core. How tested.
M.

Except the 5200. Use epoxy.

[Mike Banks]

You had the right idea. Open the deck, remove the rotten balsa, dry out, then mix slow cure epoxy with cotton fibre glue powder and butter the inside remaining glass layer. then bend your matched foam insert and work it into the void on top of the glue driving out any air pockets, until the foam lies flat. Wobble it about to get it as level as possible. Use planks and pieces of foam across good deck to hold it down until an initial set takes place. Then having ground back the edges of the cleared area, begin to replace the layers of deck fibreglass one layer at a time consolidating the glass and resin as one goes, finally using peel-ply to get a paintable finish.

I would NOT be using builders filler foam.

You CAN however make your OWN cellular epoxy putty which you can push into a tight space if it is clean and dry--it works well, gas to be done in stages because any exotherm has an effect, but that is another story. It works and works well--but for larger areas is not the best option.

[Disailor]

I had leaks at the stantion bases & found that a previous repair (not by me) had bedded the stantion base thoroughly so that the grooves on the underside of the base was blocked. Water ran down the stantion & pooled inside the base eventually following the bolts & dripping inside (as well as soaking the core). My fix was to over drill the holes, tape the lower/inner skin holes, apply thin epoxy with a Q-tip, then fill with thickened epoxy. To assure alignment I drilled one bolt sized hole, set the base with one bolt in place & then mark with a drill bit the other two. I used a countersink to form an inverted cone shaped hole & applied butyl tape to the under side of the base with the bolts inserted into the base. When tightened the butyl is formed into an "O" ring & the drain grooves are left clear. Absolutely water tight all season.