Manta 40 Hull Moisture Concerns

[wlboyer]

Is moisture in the Nida-Core common around ports and thru hulls fittings in a 1996 Manta 40? If so, what is the best (preferably most economical) fix?

[44'cruisingcat]

Any cored boat should have all hull penetrations de-cored and epoxy filled.

[cat man do]

Originally Posted by wlboyer

Is moisture in the Nida-Core common around ports and thru hulls fittings in a 1996 Manta 40? If so, what is the best (preferably most economical) fix?

Are you sure about that?

The stout fiberglass hulls and bridgedeck are layed up with vinylester resins for the most part, cored with Corecell and vacuum bagged. The hull-and-deck joint is laminated, making it more or less leakproof. Bulkheads and subfloors are made with high-tech Nida-Core, which is strong and extremely light, and then covered with veneers.

Manta 42 MK II

[smj]

The earlier Mantas were cored with NidaCore.

[wlboyer]

Yes, this is a Nida-Core Manta. Manta made a switch in 2001 to a different material. Sounds like we can remove ports and thru fittings, dry it out and re-seal. Thanks for your help.

[pbr]

Nidacore is pretty impervious to damage from moisture since it is made of polypropelene, I have drilled holes in the bottom of the cored panel and had the water actually drain out, or you could use vacuum assist. Manta's of that vintage had the core edges sealed with putty and the port was installed with 5200.

[cat man do]

as 44cc said

Any cored boat should have all hull penetrations de-cored and epoxy filled.

whether it be a skin fitting, hatch cut-out or a screw

[wlboyer]

Thanks for the info. Very helpful.