"Rusty_Hinge" wrote in message
. uk...
The message
from "Andrew Mawson" contains
these words:

Base is concrete, and dead nuts flat!

Fixed down to it, or screwed to faith and hope?

There is no provision for clipping

Clipping what to what?

The groove depth is too shallow to pierce the sheeting and retain
strength

You might be able to gaffer-tape the edges of the Twinwall and force
it
into the channel - it doesn't sound as if it will just slip in.

The sellers son initially told me Lakeland were in Scarborough,
then
Cleatormoor in Cumbria, neither check out.

Lakeland is a national chain of (usually) good quality but
overexpensive
items.

(Obviously a China made item)
I suspect that silicone will peel off in the wet and wind as the
overlap is so small

Probably, unless you can find one which is a powerful adhesive as
well.

....argh !

You might improve matters by putting the greenhouses end-to-end when
you
get round to erecting the other one.

Sounds like lack of rigidity and overstrong winds is the problem.

If you can arrange it, try metal strip or angle-iron diagonal braces
on
three sides. Well, two sides and an end.

--
Rusty
Direct reply to: horrid dot squeak snailything zetnet point co
period uk
Separator in search of a sig

The roof pieces slide upwards into channels, the wall pieces slide
downwards into channels (so no clips involved), then an extruded
gutter section slides on preventing them coming out (or in again!) the
same way. Only problem is that the gutter is a very strong force fit
and doesn't come off realistically. The whole structure is remarkably
rigid - actually quite well cross braced. Long term it will be bolted
down, but currently is held down with about twenty flag stones
overlapping the base - it is very solid. The panels are too large
(mainly 45" x 27") for the depth of channel (only about 4mm) and the
twin wall ribs are in line with the long sides, so the long edges of
the twinwall easily squash leaving no strength as the large panel
flexes. Were I to replace the twinwall with solid polycarbonate it
would probably be ok but it's about £86 for an 8' x 4' sheet of 4 mm
and it'll take 12 sheets to do both greenhouses - oddly the 'dead'
seller (swiftbuys234) still has many listings including twinwall on
ebay.

AWEM