I am interested in hearing suggestions in how to waterproof a plywood
box.
The box in question is approximately the size of a phone booth and
unfortunately it was made with interior plywood (not by me). When it
was rained on for the first time, the outermost ply began to separate
and lift.
I plan to sand the box to remove the portions of the outer ply that
have raised but will need to coat the box with something to prevent
further damage by moisture.
I should also mention that the box will in the end be painted in a
white color to keep the contents of the box cool.
Any suggestions?
Thanks
TMT
Too_Many_Tools wrote:
> A related question....it was suggested that I sheath this box in some
> type of lightweight, insulating, waterproof sheet good...again to help
> keep the contents cool and the box dry....any suggestions as to what
> might be out there?
>
> TMT
How about, um, plastic cardboard? I'm not sure of the industry name,
but it's a plastic sheet good that is constructed exactly like
corrugated cardboard. Gluing it on might be a good idea.
HTH,
-Phil Crow
Too_Many_Tools wrote:
> A related question....it was suggested that I sheath this box in some
> type of lightweight, insulating, waterproof sheet good...again to help
> keep the contents cool and the box dry....any suggestions as to what
> might be out there?
>
At major home centers you can usually find solid polymer foam
insulating panels with the sheet goods. Around here they typically
carry pink or blue extruded polystyrene in several thicknesses
and often also have styrofoam and polyurethane foam panels.
The polystyene and styrofoam will disolve in some epoxies, and
are readily combustible, (you can light them with a match). The
polyurethane probably has better solvent resistance and a much
higher flashpoint, but may slowly oxidise, becoming crumbly
after several years.
--
FF
Mike Berger wrote:
> Does it have to look nice? Waterproofing was the original use
> for duct tape (originally duck tape). Wrap the box entirely with
> a few layers of duct tape. Use white duct tape for the top layer.
>
I think that is backwards. 'Duck' tape is a brand of duct tape. Duct
tape per se, of various sorts and commonly used to seal ducts,
predated that specific brand. See also "gaffer's tape".
--
FF
Andy Dingley wrote:
> On 16 Jan 2006 14:03:21 -0800, [email protected] wrote:
>
> >I think that is backwards.
>
> Nope.
>
> > 'Duck' tape is a brand of duct tape. Duct
> >tape per se, of various sorts and commonly used to seal ducts,
> >predated that specific brand.
>
> Waterproofing (WW2 ammo boxes) was the original use. Ducts were later.
Interesting.
A filmaker I know says the original use was hanging lights for the
movie
industry (gaffer's tape). Waterproofing and ducts came later.
Today 'Duck' is a brand name for a particular duct tape, though I do
not doubt what you say about it being the term used in WWII. If
it was a word already in common usage, it would not have trademark
protection though.
--
FF
Too_Many_Tools wrote:
> I am interested in hearing suggestions in how to waterproof a plywood
> box.
>
> The box in question is approximately the size of a phone booth and
> unfortunately it was made with interior plywood (not by me). When it
> was rained on for the first time, the outermost ply began to separate
> and lift.
Do a Google on "Plywood aquarium". No, I'm not kidding.
But if the plywood has already stated to delaminate, you're SOL.
--
It's turtles, all the way down
[email protected] wrote:
> I think that is backwards. 'Duck' tape is a brand of duct tape. Duct
> tape per se, of various sorts and commonly used to seal ducts,
> predated that specific brand. See also "gaffer's tape".
"Duct tape" was developed as "duck tape", a waterproof tape for sealing
ammo boxes in WW2.
It is about the worst possible thing for sealing hot air ducts, as the
glue gets gummy when hot.
For ducts, try "silver tape" or "aluminum tape". Works much better.
"Gaffer tape" is adhesive backed fabric tape, generally black. The
adhesive releases easier than duct tape, and leaves less residue. It's
very strong in a straight pull, but easier to rip than duct tape.
Chris
On 2006-01-15 20:43:56 -0500, [email protected] said:
> You could coat with something like West expoxy (thin it and use a
> roller). You could also just go ahead and fiberlass it like a boat
> hull, then put on a WHITE gel coat
Or (cheaper) just put paint over the polyester resin and fiberglass.
Sun, Jan 15, 2006, 9:47am (EST-3) [email protected]
(Too_Many_Tools) tosses out:
<snip> Any suggestions?
Yeah. Provide some details. What's the box used for? Where?
Why? No one can provide a really viable response without knowing
details.
JOAT
You'll never get anywhere if you believe what you "hear".
What do you "know"?
- Granny Weatherwax
On 15 Jan 2006 09:47:06 -0800, "Too_Many_Tools"
<[email protected]> wrote:
>I am interested in hearing suggestions in how to waterproof a plywood
>box.
>
>The box in question is approximately the size of a phone booth and
>unfortunately it was made with interior plywood (not by me). When it
>was rained on for the first time, the outermost ply began to separate
>and lift.
>
>I plan to sand the box to remove the portions of the outer ply that
>have raised but will need to coat the box with something to prevent
>further damage by moisture.
>
>I should also mention that the box will in the end be painted in a
>white color to keep the contents of the box cool.
>
>Any suggestions?
>
>Thanks
>
>TMT
There are marine epoxy finishes that protect well. Some kind of
sloped shingled roof, corrugated fiberglass or rubber membrane on top
will help too. Even with that, regular maintenance will be required.
On 16 Jan 2006 14:03:21 -0800, [email protected] wrote:
>I think that is backwards.
Nope.
> 'Duck' tape is a brand of duct tape. Duct
>tape per se, of various sorts and commonly used to seal ducts,
>predated that specific brand.
Waterproofing (WW2 ammo boxes) was the original use. Ducts were later.
On 15 Jan 2006 09:47:06 -0800, "Too_Many_Tools"
<[email protected]> wrote:
>I am interested in hearing suggestions in how to waterproof a plywood
>box.
>
>The box in question is approximately the size of a phone booth and
>unfortunately it was made with interior plywood (not by me). When it
>was rained on for the first time, the outermost ply began to separate
>and lift.
>
>I plan to sand the box to remove the portions of the outer ply that
>have raised but will need to coat the box with something to prevent
>further damage by moisture.
>
>I should also mention that the box will in the end be painted in a
>white color to keep the contents of the box cool.
>
>Any suggestions?
>
>Thanks
>
>TMT
Glass it over. Not too hard, not too expensive and will last longer
than any coating you can put on it.
"Too_Many_Tools" <[email protected]> wrote in message
news:[email protected]...
>I am interested in hearing suggestions in how to waterproof a plywood
> box.
>
> The box in question is approximately the size of a phone booth and
> unfortunately it was made with interior plywood (not by me). When it
> was rained on for the first time, the outermost ply began to separate
> and lift.
>
> I plan to sand the box to remove the portions of the outer ply that
> have raised but will need to coat the box with something to prevent
> further damage by moisture.
>
> I should also mention that the box will in the end be painted in a
> white color to keep the contents of the box cool.
>
> Any suggestions?
>
> Thanks
>
> TMT
>
Replace this box with one made out of exterior or marine plywood is my idea.
Jim
Too_Many_Tools wrote:
> Any suggestions?
I'd say any paintable coating will probably fail sooner or later.
For a more permanent solution you could try single ply rubber as used
in the commercial roofing business. It's pretty easy to apply, lasts a
long long time and there are types that come in white. Contact your
local commercial roofing supplier for information (a roofing
supplier... not Home Depot etc.)
Joe Barta
Does it have to look nice? Waterproofing was the original use
for duct tape (originally duck tape). Wrap the box entirely with
a few layers of duct tape. Use white duct tape for the top layer.
Too_Many_Tools wrote:
> I am interested in hearing suggestions in how to waterproof a plywood
> box.
>
> The box in question is approximately the size of a phone booth and
> unfortunately it was made with interior plywood (not by me). When it
> was rained on for the first time, the outermost ply began to separate
> and lift.
>
> I plan to sand the box to remove the portions of the outer ply that
> have raised but will need to coat the box with something to prevent
> further damage by moisture.
>
> I should also mention that the box will in the end be painted in a
> white color to keep the contents of the box cool.
Eposy resin. Painted with white epoxy paint.
On 15 Jan 2006 09:47:06 -0800, "Too_Many_Tools"
<[email protected]> wrote:
>I am interested in hearing suggestions in how to waterproof a plywood
>box.
>
>The box in question is approximately the size of a phone booth and
>unfortunately it was made with interior plywood (not by me). When it
>was rained on for the first time, the outermost ply began to separate
>and lift.
>
>I plan to sand the box to remove the portions of the outer ply that
>have raised but will need to coat the box with something to prevent
>further damage by moisture.
>
>I should also mention that the box will in the end be painted in a
>white color to keep the contents of the box cool.
>
>Any suggestions?
>
>Thanks
>
>TMT
On 17 Jan 2006 09:06:39 -0800, [email protected] wrote:
>Today 'Duck' is a brand name for a particular duct tape, though I do
>not doubt what you say about it being the term used in WWII.
The original stuff was made from "cotton duck" (a weave) and was
waterproof in the way that ducks obviously are. The name followed
almost immediately. Although it wasn't initially issued (outside the
factory) squaddies and bilkos soon realised that it was useful and took
to saving the old stuff from packing cases. When it was issued to the
field the weave was changed to the easy-tear stuff we know today.
It was also invented by Johnson & Johnson, not 3M. They knew how to make
medical strapping tape, which is broadly similar. 3M invented
pressure-sensitive adhesive tape in general and also maskign tape, but
not duck/duct/gaffer.
On 15 Jan 2006 09:47:06 -0800, "Too_Many_Tools"
<[email protected]> wrote:
>Any suggestions?
Vinyl siding?
I'm really not kidding...
Barry
Too_Many_Tools wrote:
> A related question....it was suggested that I sheath this box in some
> type of lightweight, insulating, waterproof sheet good...again to help
> keep the contents cool and the box dry....any suggestions as to what
> might be out there?
>
> TMT
by the time you put that much work into it you could just rebuild the box
with new plywood. Just do one part at a time using the old as a remplate.
> Replace this box with one made out of exterior or marine plywood is my idea.
> Jim
>
Ever watch the show on TV "The Big Build"? It's the one in which they build a
small sized viking long boat, some of it from fresh cut doug fir (the basic plywood),
covering it with at least a thousand years of waterproofing using 'pine tar', available
from Jamestown distributers, and thinned with real turpentine. But that's expensive
like Spar varnish, still cheaper than a rebuild with marine grade ply.
--
Alex - "newbie_neander" woodworker
cravdraa_at-yahoo_dot-com
not my site: http://www.e-sword.net/
<<I plan to sand the box to remove the portions of the outer ply that
have raised but will need to coat the box with something to prevent
further damage by moisture.
I should also mention that the box will in the end be painted in a
white color to keep the contents of the box cool.>>
How about covering the box with (white) plastic laminate like you would use
on a kitchen countertop.
Lee
--
To e-mail, replace "bucketofspam" with "dleegordon"
_________________________________
Lee Gordon
http://www.leegordonproductions.com
You could coat with something like West expoxy (thin it and use a
roller). You could also just go ahead and fiberlass it like a boat
hull, then put on a WHITE gel coat
John
On 15 Jan 2006 09:47:06 -0800, "Too_Many_Tools"
<[email protected]> wrote:
>I am interested in hearing suggestions in how to waterproof a plywood
>box.
>
>The box in question is approximately the size of a phone booth and
>unfortunately it was made with interior plywood (not by me). When it
>was rained on for the first time, the outermost ply began to separate
>and lift.
>
>I plan to sand the box to remove the portions of the outer ply that
>have raised but will need to coat the box with something to prevent
>further damage by moisture.
>
>I should also mention that the box will in the end be painted in a
>white color to keep the contents of the box cool.
>
>Any suggestions?
>
>Thanks
>
>TMT
"Too_Many_Tools" <[email protected]> wrote in message
news:[email protected]...
> "Replace this box with one made out of exterior or marine plywood is my
> idea.
> Jim "
>
> That was my first thought Jim but unfortunately it was specially built
> for a piece of equipment....so I am stuck with using the original box.
>
> Thanks for the suggestion.
>
> TMT
>
As other have suggested, using a very good paint which is water tight is the
next best thing. You do need to keep water out as much as possible since
interior grade plywood does not use waterproof glue. And, unlike marine
plywood, the layers are not selected for water tightness. I suspect you
need to plan on lots of routine maintenance.
Jim