New teak decks over old teak decks
 

I provide teak decking for the DIY folks and have received several inquiries
regarding laying thin (1/4") teak strips over an existing failed teak deck.
Traditionally laid teak decks primarily fail because caulking separates or
the bungs loosen and water corrodes the fasteners that then enters the
subdeck. In theory.... securing all loose decking, filling voids and then
rough sanding the existing teak deck should provide a sound subdeck to
adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak over
an existing teak deck ? Especially interested if someone has done this 10
years ago.




.......Ken

New teak decks over old teak decks
 

Island Teak wrote:
I provide teak decking for the DIY folks and have received several inquiries
regarding laying thin (1/4") teak strips over an existing failed teak deck.
Traditionally laid teak decks primarily fail because caulking separates or
the bungs loosen and water corrodes the fasteners that then enters the
subdeck. In theory.... securing all loose decking, filling voids and then
rough sanding the existing teak deck should provide a sound subdeck to
adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak over
an existing teak deck ? Especially interested if someone has done this 10
years ago.




.......Ken


I fail to see how covering existing teak decks, with all the inherent
problems, could possibly fix anything.

What in the world would you do if you had a problem with the old fasteners?

You can't hide a problem.

New teak decks over old teak decks
 

"Jim" wrote in message
...
Island Teak wrote:
I provide teak decking for the DIY folks and have received several
inquiries regarding laying thin (1/4") teak strips over an existing
failed teak deck. Traditionally laid teak decks primarily fail because
caulking separates or the bungs loosen and water corrodes the fasteners
that then enters the subdeck. In theory.... securing all loose decking,
filling voids and then rough sanding the existing teak deck should
provide a sound subdeck to adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak
over an existing teak deck ? Especially interested if someone has done
this 10 years ago.




.......Ken


I fail to see how covering existing teak decks, with all the inherent
problems, could possibly fix anything.

What in the world would you do if you had a problem with the old
fasteners?

You can't hide a problem.

What is the problem of the old fasteners ? As long as loose and obviously
corroded fasteners are removed and later covered in polyurethane adhesive
they pose no risk due to no continued moisture contact.

...Ken

New teak decks over old teak decks
 

On Sun, 06 Jan 2008 08:38:01 -0800, Jim wrote:

Island Teak wrote:
I provide teak decking for the DIY folks and have received several inquiries
regarding laying thin (1/4") teak strips over an existing failed teak deck.
Traditionally laid teak decks primarily fail because caulking separates or
the bungs loosen and water corrodes the fasteners that then enters the
subdeck. In theory.... securing all loose decking, filling voids and then
rough sanding the existing teak deck should provide a sound subdeck to
adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak over
an existing teak deck ? Especially interested if someone has done this 10
years ago.




.......Ken


I fail to see how covering existing teak decks, with all the inherent
problems, could possibly fix anything.

What in the world would you do if you had a problem with the old fasteners?

Air powered chisel, followed by a grinder?

You can't hide a problem.

You heard the one about the fire on the USS Oriskany? Someone
accidently ignited an air dropped illumination flare. Tossed it into
the locker full of flares, slammed the lid, and hid the problem for
about ten seconds.

Casady

New teak decks over old teak decks
 

On Sun, 06 Jan 2008 18:59:52 -0500, wrote:

Teak decks are pretty heavy, and adding more weight that high up in the boat is
probably not a great idea.

US battleships had four inch thick teak decks. Weight was hardly an
issue, but can you imagine the cost at today's prices?

Casady

New teak decks over old teak decks
 

wrote in message
...
On Sun, 06 Jan 2008 01:41:02 GMT, "Island Teak"
wrote:



I provide teak decking for the DIY folks and have received several
inquiries
regarding laying thin (1/4") teak strips over an existing failed teak
deck.
Traditionally laid teak decks primarily fail because caulking separates or
the bungs loosen and water corrodes the fasteners that then enters the
subdeck. In theory.... securing all loose decking, filling voids and then
rough sanding the existing teak deck should provide a sound subdeck to
adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak over
an existing teak deck ? Especially interested if someone has done this
10
years ago.


Two issues come to mind:

Teak decks are pretty heavy, and adding more weight that high up in the
boat is
probably not a great idea.

First off teak is not a heavy hardwood. A square foot of 1/4" x 1-5/8" teak
weighs 14 ounces.
Any teak deck that requires replacing has probably had that 1/4" worn off in
service.

By the time a teak deck needs replacement, there are usually issues UNDER
it
that need attention.

Yes, that is the point and where someone competent is required to sample
areas of the old deck to
acertain if the subdeck is sound enough to apply a new 'top' deck.

...Ken

New teak decks over old teak decks
 

On Mon, 07 Jan 2008 04:52:02 GMT, "Island Teak"
wrote:

Any teak deck that requires replacing has probably had that 1/4" worn off in
service.

Every cruise ship I have been on had teak decks. They didn't maintain
them, hosed them down, perhaps, and I don't know why they would wear
much if any. Traffic wouldn't do it, those things are big and the wear
would be well diluted. The planks were perhaps three inches wide, and
must have been maybe 3/4 inch thick? You need a certain thickness,
relative to width, to avoid cupping. Of course they don't have to
impress the neighbors with well sanded teak. I mean we saw one boxboat
in two atlantic crossings.

Casady

New teak decks over old teak decks
 

"Richard Casady" wrote in message
...
On Mon, 07 Jan 2008 04:52:02 GMT, "Island Teak"
wrote:

Any teak deck that requires replacing has probably had that 1/4" worn off
in
service.

Every cruise ship I have been on had teak decks. They didn't maintain
them, hosed them down, perhaps, and I don't know why they would wear
much if any. Traffic wouldn't do it, those things are big and the wear
would be well diluted. The planks were perhaps three inches wide, and
must have been maybe 3/4 inch thick? You need a certain thickness,
relative to width, to avoid cupping. Of course they don't have to
impress the neighbors with well sanded teak. I mean we saw one boxboat
in two atlantic crossings.

Casady

And your point is ?

I have been through a number of cruise ships at the 'ship breaking yards'
and , over years, watched teak deteriorate on the stump.

Do you believe that teak decking does not wear thin ?

regards...Ken

New teak decks over old teak decks
 

I would be more concerned about movement in the old deck putting strain on
the veneered deck seams. I believe it would probably work but I would
suggest a layer of 6oz glass and epoxy over the old sanded and acetone
washed deck. Then take care to lay out the new deck with the seams
positioned over the center of the old boards.

Still there could be a problem with moisture from below. Especially if the
old deck is flat sawn rather than quartered. As the humidity on the back
surface changes the old flat or riff sawn teak could cup. That would put
some weird stresses on the new deck.

--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Island Teak" wrote in message
news:OkWfj.15111$EA5.11576@pd7urf2no...


I provide teak decking for the DIY folks and have received several
inquiries regarding laying thin (1/4") teak strips over an existing failed
teak deck. Traditionally laid teak decks primarily fail because caulking
separates or the bungs loosen and water corrodes the fasteners that then
enters the subdeck. In theory.... securing all loose decking, filling
voids and then rough sanding the existing teak deck should provide a sound
subdeck to adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak over
an existing teak deck ? Especially interested if someone has done this
10 years ago.




.......Ken

New teak decks over old teak decks
 

"Glenn Ashmore" wrote in message
...
I would be more concerned about movement in the old deck putting strain on
the veneered deck seams. I believe it would probably work but I would
suggest a layer of 6oz glass and epoxy over the old sanded and acetone
washed deck. Then take care to lay out the new deck with the seams
positioned over the center of the old boards.

Still there could be a problem with moisture from below. Especially if
the old deck is flat sawn rather than quartered. As the humidity on the
back surface changes the old flat or riff sawn teak could cup. That would
put some weird stresses on the new deck.



Potential moisture below the old decking is certainly the area of greatest
concern and may require lifting small sections of the old deck
to search for trouble spots. I would use a polyurethane adhesive rather than
epoxy and matting to allow for any possible movement .
I doubt that cupping would be a factor in a well weathered deck made up of
1.5 to 2 inch teak strips.


Thanks for your opinion..........Ken






--
Glenn Ashmore

I'm building a 45' cutter in strip/composite. Watch my progress (or lack
there of) at: http://www.rutuonline.com
Shameless Commercial Division: http://www.spade-anchor-us.com

"Island Teak" wrote in message
news:OkWfj.15111$EA5.11576@pd7urf2no...


I provide teak decking for the DIY folks and have received several
inquiries regarding laying thin (1/4") teak strips over an existing
failed teak deck. Traditionally laid teak decks primarily fail because
caulking separates or the bungs loosen and water corrodes the fasteners
that then enters the subdeck. In theory.... securing all loose decking,
filling voids and then rough sanding the existing teak deck should
provide a sound subdeck to adhere the new 1/4" decking to.

Does anyone in this forum have experience regarding adhering new teak
over an existing teak deck ? Especially interested if someone has done
this 10 years ago.




.......Ken