I'd like to fix a piece of 2m x 1m corrugated onduline type sheet to a
wall - act as something approaching shelter for my bike. It'd be into a
corner, with the shorter end meeting the house wall, and the longer end
onto a 6'/9" solid brick garden wall.
I'd prefer not to use a post, and have the 4th unsupported corner
floating. Might this work, and any suggestions for a supporting frame?
Hmm, well the problem with most corrugated materials is that wind catches
them and tends to pull them off of the frame. I suppose ith enough overkill
on support points it might work, but I'm still not sure it will last.
This newsgroup posting comes to you directly from...
Trivially easy to avoid that by having horizontal frame
pieces both above and below the corrugated materials.
Corse it will work.
No reason why it can't last with say galvanised
steel frame used above the corrugated materials,
even just 25mm square steel tube would last fine.
With the same stuff under the corrugated materials,
all welded together or bolted with stainless bolts if
you can't weld and don’t have a welder.
Much harder to stop feet of snow bringing it all down tho.
I had wondered about some sort of self-fabricacted frame - either wood
or metal - at the unsupported corner. It can't go above, though, as the
wall's only 61, and I'd like as much clearance as possible beneath.
In a sense, I'd rather it came down than put too much on to the solid wall.
I don't have the picture either. You say it is into a corner but your
description sounds as though it is between two walls. Do you mean that
the solid brick garden wall is perpendicular to your house wall? Is that
as high as you want the top end to be, or is the height of the garden
wall the same as the planned height of the lower end of the "roof"?
Superficially, it sounds to me as though you might get away with an
unsupported corner but the devil is in the detail. Is it sheltered from
wind, will it see high snow loads? If the garden wall is higher than the
top end, you can screw a rafter (the sloping piece of wood) firmly to
this, and provide one very secure edge, together with a good edge on the
house wall. If the garden wall is lower, you probably want a triangular
frame (for stiffness) comprising the edge rafter, a horizontal piece of
wood along the top of the garden wall, and a vertical piece on the house
wall. You might panel this in with plywood for extra strength.
Another way to support the "unsupported corner" might be with a
straining wire from that corner up to the house wall just below the
guttering (the more "vertical" the better). This needs to be securely
fixed to the wall. You can easily provide tensioning adjustment with a
It would lean from the garden wall, with the 1m width supported by the
house/garden wall at one end, and the garden wall and unsupported
9except by a frame etc) at the other.
Not sure what you mean by 'garden wall lower' - but that last sentence
sums up what I'm after. I'd probably just bolt a piece of timber
diagonally on the house wall, at the angle of the pitch. It's the
unsupported corner I'm not sure about -
Yes, that would work, but I want to avoid anything that's visible from
next door, partly because of the mess I'd likely make of it :-)
Nope. Still don't understand.
Is the garden wall as high as the top part of the new "roof"?
Is the garden wall perpendicular to, and attached to, the house?
Do you want the drainage to be away from the house, or running parallel
to the house?
Thanks. As others have said, you will need to support the corrugated
sheet by some sort of timber frame.
But I am still confused by your description. Normally, a 2 x 1 sheet
would have the corrugations draining along the *long* direction.
I would build the frame for a sheet like that using treated timber, say
two lengths of Wickes treated 38 x 89 as the "rafters" and then four or
five lengths of 38 x 63 as the cross-members. I would build the frame on
the ground, check that it fitted the space properly, then screw or nail
the roofing in place, then put up the complete "roof", supporting it on
separate timbers already fixed to the two walls.
I would still try to provide some extra support for the unsupported
corner, if not a tension wire then a diagonal brace underneath the short
edge. It need not go right to the corner, even half way would help. The
more vertical the better, but if you need to angle it to provide access
then the more angled, the stiffer and more securely fastened it needs to be.
But if your "long end" is along the garden wall, and the drainage
direction of the sheet is parallel to the house wall, then this implies
that you have a sheet draining along the short direction. I'm not quite
sure how I would frame that.
Ah yes you're right, my thinking hadn't got that far. It would need to
slope down along its length, away from the house. Not as I'd said above.
Mmmm - would look a bit odd. Maybe cut it in 2 and have the drain run
1m doesn’t provide that much shelter. My eaves on the sunny
side of the passive solar house are 2m so the sun comes in in
winter and not in the summer and that doesn’t provide all
that much shelter for something like a bike against the wall.
Better than nothing, but not great in a decent storm.
Yes it does and street awnings are all done like that now.
You do need to allow for feet of snow on it tho.
Something at the corner where you don’t want
a post, attached to the wall above the frame
for the corrugated material at the corner.
Anything from a triangular metal frame to just
a steel rod in tension, tho the later is harder
to easily attach to the wall securely and
depends on the wall being much stronger.
Yes, agreed - but it's the better than nothing I'm after in a 'garden'
that isn't much more than a yard. The sheet was bought without much
thought - I had a load of sheet materials being delivered anyway.
And to make matters worse, keep the pitch shallow to maximise the height
(6' wall). I know this doesn't sound elegant, but I'd rather it
'crumpled' under snow than took the wall down. Also, it's quite probable
that in the unlikely event of a foot or more of snow I could simply
brush it off as it fell. Not exactly engineering in, I know . . .
Yes, I'd be looking at the frame. Any suggestions on the best way
forward there appreciated - either off the shelf supplier, or just lash
something up out of timber.
Yeah, that’s the way I'd do it myself, sort of hinged on the
long side so it hinges against the wall and the bike in a
heavy snow storm. Wouldn’t do the bike any harm when
done properly and would protect it from the snow.
Just a minor bit of work in the unusual event of a heavy
snow storm shovelling the snow away and hinging back
the 'roof' to where it normally sits and putting the small
breakaway retaining thing back again.
Personally I'd hinge it on the long side and then it
will work auto even if you are away at the time etc.
Personally I'd weld it up out of 19mm rhs
with that on both sides of the corrugated
sheet so it handles strong wind fine.
Hinged along the long side so it auto
folds down in a very heavy snow storm.
I much prefer metal RHS but I have what is
needed to weld it and know how to weld stuff.
Both my gates are done like that and
have lasted for more than 45 years fine.
Your 'roof' is just the same as my gates but
normally sitting horizontally instead of vertically
and clad with ouduline instead of the metal sheet
one of my gates has. With hinges that are just a
metal rod which is a cut off bolt welded to the
gates, going thru a hole in a metal strap
dynabolted to the block and brick walls.
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