I am re-flooring a farm trailer with 3/4" WBP plywood.

Inevitably this will be exposed to sunshine and rain. Is attempting to
seal the edges worth while and, if so, how?
Also how much expansion gap to leave when fitting 4'0" sheets?
--
Tim Lamb

On 19/05/2014 09:51, Tim Lamb wrote:
I am re-flooring a farm trailer with 3/4" WBP plywood.

Inevitably this will be exposed to sunshine and rain. Is attempting to
seal the edges worth while and, if so, how?

If its WBP ply (and it should be for this application) then it should
not delaminate anyway. A couple of coats of whatever finish the rest is
getting ought to do it. If you want a posher looking job then you coud
fix real wood lippings to the edges.

Also how much expansion gap to leave when fitting 4'0" sheets?

Ply is relatively dimensionally stable, so you ought not need much - say
a quarter inch per side...

--
Cheers,

John.

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On 19/05/2014 13:17, John Rumm wrote:
On 19/05/2014 09:51, Tim Lamb wrote:
I am re-flooring a farm trailer with 3/4" WBP plywood.

Inevitably this will be exposed to sunshine and rain. Is attempting to
seal the edges worth while and, if so, how?

If its WBP ply (and it should be for this application) then it should
not delaminate anyway. A couple of coats of whatever finish the rest is
getting ought to do it. If you want a posher looking job then you coud
fix real wood lippings to the edges.

Also how much expansion gap to leave when fitting 4'0" sheets?

Ply is relatively dimensionally stable, so you ought not need much - say
a quarter inch per side...

In boat building you would coat/paint the ply with epoxy resin maybe
with a little filler for the edges.
You can always add sand to the last coat for a non-slip finish on the
top surface.

In message , robert
writes
On 19/05/2014 13:17, John Rumm wrote:
On 19/05/2014 09:51, Tim Lamb wrote:
I am re-flooring a farm trailer with 3/4" WBP plywood.

Inevitably this will be exposed to sunshine and rain. Is attempting to
seal the edges worth while and, if so, how?

If its WBP ply (and it should be for this application) then it should
not delaminate anyway. A couple of coats of whatever finish the rest is
getting ought to do it. If you want a posher looking job then you coud
fix real wood lippings to the edges.

Also how much expansion gap to leave when fitting 4'0" sheets?

Ply is relatively dimensionally stable, so you ought not need much - say
a quarter inch per side...

In boat building you would coat/paint the ply with epoxy resin maybe
with a little filler for the edges.
You can always add sand to the last coat for a non-slip finish on the
top surface.

Hmm.. I'm about as far from the sea as you can get. Although, there was
once a modest *ships chandlers* in St. Albans, Mrs. Wedge!

Current thinking is to dose the edges with whatever oil based topcoat
comes to hand. Non slip is not a huge issue as the trailer is unlikely
to be used in wet conditions. (hay/straw haulage).

--
Tim Lamb

On Thursday, May 22, 2014 8:35:11 AM UTC+1, Tim Lamb wrote:
In message , robert
writes
On 19/05/2014 13:17, John Rumm wrote:
On 19/05/2014 09:51, Tim Lamb wrote:

I am re-flooring a farm trailer with 3/4" WBP plywood.

Inevitably this will be exposed to sunshine and rain. Is attempting to
seal the edges worth while and, if so, how?

If its WBP ply (and it should be for this application) then it should
not delaminate anyway. A couple of coats of whatever finish the rest is
getting ought to do it. If you want a posher looking job then you coud
fix real wood lippings to the edges.

Also how much expansion gap to leave when fitting 4'0" sheets?

Ply is relatively dimensionally stable, so you ought not need much - say
a quarter inch per side...

In boat building you would coat/paint the ply with epoxy resin maybe
with a little filler for the edges.
You can always add sand to the last coat for a non-slip finish on the
top surface.
Hmm.. I'm about as far from the sea as you can get. Although, there was
once a modest *ships chandlers* in St. Albans, Mrs. Wedge!
Current thinking is to dose the edges with whatever oil based topcoat
comes to hand. Non slip is not a huge issue as the trailer is unlikely
to be used in wet conditions. (hay/straw haulage).

I bought 'wbp' from wickes once. One day of light rain and it delaminated!


NT

In message ,
writes
I bought 'wbp' from wickes once. One day of light rain and it delaminated!

We'll see. Reading the almost illegible stamping, this came from
properly managed forest in China!

--
Tim Lamb