May 25, 2011 . Cored decks have been standard since the earliest days of fiberglass boat production; they help decrease weight well above the waterline and also .. Foam core. Most foam cores are made of polyvinyl chloride (PVC). These include Airex, a linear PVC foam that is resilient and easily springs back into..
Decks are most often cored with plywood or end grain balsa. Occasionally foam or a plastic core system is used, but usually not. The diagram shows some typical cores, and a couple of photographs of a power boat deck showing the wood core. Once the deck or cabin core decomposition becomes severe you'll know it:..
If you want a fracture free, dry deck core, go to the boat show and add another $200k to that $20k you had budgeted for a 28 footer or buy the 20k boat and go . Most sailboat rudders are of foam filled construction and there are only two categories in older sailboats.those that have been repaired and those that need repair
Most delamination occurs on the decks or in the cabinhouse structure of a boat, although it is possible for delamination to occur in the hull itself, particularly if the hull is cored . The core material (usually end-grain balsa squares, occasionally plywood, and sometimes foam) separates from the fiberglass skin above or below
Jun 11, 2015 . The principles of fiberglass construction, what to look for in buying an older boat and how to assess and repair any damage (published May 2015). There are . Core technology has been around for quite some time, which makes it highly unusual not to find a production boat without a cored deck. If you do, it..
Items 1 - 11 of 11 . Corecell A500 marine structural foam sheets from the boat building and repair experts since 1977.. In Stock . Grid scored Divinycell cross-linked PVC foam core. H80, 5 lb .. Typical applications include hull and deck core replacement, construction of small parts and inexpensive straight core replacement
I used Core-Cell foam to repair areas in a balsa deck - not huge areas - the biggest was about 2' square. Worked just fine. You'll probably hear lots of BS about hard spots and so forth but it's just that - BS. Plenty of boats have a mix of balsa and plywood for crush areas right from the factory. I agree there..
Jul 28, 2012 . Disassemble and remove all fittings in the floor. ie. the cockpit pedestal/steering wheel, drain and diesel fill cap. Cut the top layer of the existing fiberglass laminate and peel it off; Scrape out the old wet deck core; Prop up the bottom half of the fiberglass floor from below until level again; Lay down fresh foam..
Oct 31, 1998 . Water then got into the core and 10, 15 or 20 years later we're back to floppy decks again because the core eventually rotted. Next . And so we had our first foam and honeycomb cored boat hulls that ultimately fell apart simply because they were using a new material about which they knew almost nothing
31. 5 4. Repairing holed panels. 37. 6 Repairing and Upgrading Soles and Decks. 6 1. Repairing delaminated soles and decks. 40. 6 2. Installing a teak deck ... active, and some are inactive, used primarily to provide a form for a structural fiberglass skin. Active core solid wood or plywood. Inactive core low density (foam)
Apr 17, 2013 . Repair catamaran soft decks Soft decks are not a death sentence for your old boat. It took me a few hours to re-bond the inner skin of the deck to the foam core to repair the soft decks. It took longer to refinish the deck than to make that structural repair. The repair isn't difficult, but it does take some feel to get..
Jul 20, 2015 . This is a system that uses two part structural foam that makes a mushy boat deck, firm without replacement. www.injectadeck.com This system will give you a r..
Dec 9, 2010 . In this blog, I'll explain how core damage can happen and in future blogs I'll explain how to repair minor core damage with the more common core materials, foam or wood. Water can enter the core around through-hull fittings like speedos and depth transducers and more typically through deck fittings like..
Jun 21, 2017 . Beyond that, plastic foam core materials are more common in hulls than decks. Foam core comes in three flavors: styrene acrylonitrile (SAN), linear polyvinyl chloride (PVC) and cross-linked polyvinyl chloride. These have varying engineering properties, but from the owner's viewpoint all are essentially the..
Jan 25, 2011 . You should put some new core into the deck. Solid glass is going to add an awful lot of weight for being up that high. Cored glass is more rigid than solid glass, I think. Also, you have to put the glass in a few layers at a time or the heat generated will weaken the bond. I recommend using a high-density foam..
The designer has expressed a preference for balsa core on the decks, with foam around the edges, because foam is easier to contour and fair into the topsides. Sounds . It holed the hull under the stem, which had to take an emergency repair and both rudders punched up through the hull in the lazarette
Apr 26, 2008 . Alas I took no "during" pictures, but I did about 20% of the deck. I went through the top, cut out the bad core, and reglassed. It took two years. I believe you'll find that balsa is cheaper than foam and works very well as long as you follow Casey's instructions in his book. His method totally seals the balsa so it..
Bruce Blackie and Dave Miller (that's us) have undertaken this project to correct the soft stern deck condition. Essentially the stern deck will be removed from the boat. The rotted balsa core will be taken out and replaced with closed cell foam. The reconditioned stern deck will then be reinstalled to the hull. We also have a..
successful foredeck, port-side core repair job. 1. Strip the deck of .. I bought Casey's book "Sailboat Hull and Deck Repair". I think it probably has .. Actually, many boats use plywood as a core material as it is much cheaper thnt balsa or foam which is used because it is lighter than plywood. Remember the..