Having acquired a second hand timber play centre I am faced with a
couple of queries.
The glass fibre slide has suffered from exposure such that the coloured
gel coat can be easily rubbed off. Is it possible to renew the surface?
Also many of the wooden ladder rungs have rotted. Rather than replace
with what appears to be 25mm broom handle, I wonder if there is
galvanised steel tube available with the same o/d?
My first thought was 20mm electrical conduit but I can't remember if
this is i/d or o/d:-(
I would think about replacing the entire slide if it has deteriorated
that much. If you think it is still strong enough, then try a marine
grade paint for GRP hulls. I would avoid the non-slip ones though :-)
3/4" bore galvanised steel water pipe is 27mm OD.
OD. You would need 25mm conduit, but water pipe has a thicker wall and
Thanks for that. I'll check more carefully but the glass fibre matrix
looked fine. The concern is the granddaughters having green stained
Presumably start with a thorough sanding and follow the instructions on
25mm galvanised conduit has got to be strong enough for a 375mm span and
kids less than 6 years old?
The zinc will corrode first, protecting the steel.
That's why hot dipped stuff lasts far longer as there is more zinc than
on the plated stuff.
Buildings and ships can have huge ingots of zinc fitted to protect them.
I would expect some superficial rust where bare metal is exposed.
However, this will be out of sight as the ends are rebated into the
Dennis has pointed to *galvanic* protection where Zinc is more active
electrically than Iron and hence corrodes first.
They are currently one and a bit and two and a bit so I am in front of
25mm galvanised conduit turns out to be much cheaper than hardwood
dowel. I could turn some farm Oak but life is getting shorter!
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