About Us

wrote:
Hi,

I know this is a bit off-topic for this group, but I'm not sure where
else to ask it. I'm going to build a hot tub (more like a soaking tub),
and I'd like to use fiberglass. I will first build a 2x4 frame, then
(maybe) attach plywood to the inner part of the frame, then apply
fiberglass cloth. But I'm trying to decide whether the plywood is
needed for structural reasons, or just to give shape to the fiberglass.

Do I need to use something heavy-duty (ie 3/4" ply)? Or can I just use
1/4" ply (or even just a stretched-out bed sheet) and fiberglass over
it? In the DIY car audio world, people sometimes use t-shirts to create
a sort of mold. If the fiberglass can bear the weight of the water, I'd
just assume not use any plywood. I fear that the heat and steam coming
off the hot tub might cause delamination with regular plywood (and
marine grade plywood is just too expensive for this project).

I'm open-minded to completely alternate building materials, but weight
is a concern, so no concrete. Due to the location this is being
installed, most store-bought tubs won't fit, so I can't simply buy a
used tub. Thanks for the help, and sorry if this is a bit off-topic.

Shamus

I would absolutely use vinylester or epoxy resins for a hot
tub otherwise you are likely to get a very fast case of
osmotic blisters. You will need some sort of framework for
the glasswork, be it foam or wood.

Also make sure the final 2 inside layers are chopped strand
mat with a heavy coat of resin for waterproofness.

You can use a mix of alternating layers of CSM & woven
roving 18-24 oz

Evan Gatehouse

Thread Tools	Search this Thread
Show Printable Version	Search this Thread: Advanced Search
Display Modes
Switch to Linear Mode Switch to Hybrid Mode Threaded Mode

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Fiberglass patch problem...any solutions?	Bonasa	Boat Building	12	July 3rd 05 10:03 PM
rec.boats.paddle sea kayaking FAQ	[email protected]	General	0	February 28th 05 05:28 AM
rec.boats.paddle sea kayaking FAQ	[email protected]	General	0	January 28th 05 05:46 AM
Fiberglass Hull Repair	Bonasa	Boat Building	6	September 2nd 04 03:26 PM
rec.boats.paddle sea kayaking FAQ	[email protected]	General	0	January 16th 04 09:19 AM

Menu

About Us