Re: expanding foam Back in the 70’s, prepping a C&C 39’s ice box for the Transpac race to Hawaii, we poured too much expanding foam into the space around the box. As the overfill expanded it distorted the galley counter and bulkhead. We ended up cutting out the foam and starting over with much less mix and smaller pours.
I have repaired / replaced the balsa core in approximately 15 square feet of Calypso’s deck. I used mostly new balsa but around the mast where there are many halyard blocks I replaced the sodden plywood with epoxy laminations. There’s much written about repairing balsa core decks that detail both short term and long term repairs. Let me know if you have any follow up questions about deck repairs or my Calypso restoration project. Martin DeYoung Calypso 1971 C&C 43 Seattle/Port Townsend’s yard (Knee deep in painting the topsides and deck) > On Aug 25, 2021, at 9:19 AM, SV Mary Me via CnC-List <cnc-list@cnc-list.com> > wrote: > > > I've got some soft spots returning on the deck at the base of the mast, that > a previous owner had made an attempt to shore up. According to the owners > manual, the cabin-ceiling/deck sandwich is balsa cored, so I'm working with > the assumption that this has rotted away. > > The local supply store has a plastic honeycomb panel to use as a base > material for fibreglass work that could use to fill the space, once the > rotted material is dug out. I also thought about using expanding, > self-hardening construction foam that could be shaved and shaped, then > 'glassed over. > > Has anyone used, or have any thoughts on using the expanding foam? > > > s/v Mary Me > 1975 C&C 24 > Labelle, Florida USA > > Thanks to all of the subscribers that contributed to the list to help with > the costs involved. If you want to show your support to the list - use > PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu Thanks to all of the subscribers that contributed to the list to help with the costs involved. If you want to show your support to the list - use PayPal to send contribution -- https://www.paypal.me/stumurray Thanks - Stu
