Any clever ways of checking the slope of old spouting?
It's 3 to 4 metres up from the ground and it's not easy to get on the
roof. The fascia board is like a dog's hind leg.
New spouting is needed. There are two downpipes, and the spouting goes
endlessly all the way around the roof. Clearly the new spouting needs
to be lowest where the downpipes are.
A 2 foot level doesn't seem adequate for that. A hosepipe with clear
tubes on each end is a bit difficult to get up ladders.
I could block all the holes in the old spouting and put water in it.
That seems the easiest.
Block all the outlets. Fill with water. Insert table-tennis balls.
Unblock one outlet. The water, as indicated by the T-TBs, will flow
downwards to that outlet.
If it's really slopey then T-TBs will run downhill without water.
I was thinking of putting water in the spouting and going around with
a ladder measuring the water level and marking the fascia underneath.
Or writing the distance of the water level from the bottom of the
fascia, in mm. The plastic spouting I intend to use clips in nicely if
all the supports are in a straight line, otherwise it looks horrible.
String lines always sag.
On Fri, 04 Mar 2011 12:41:50 -0800, Matty F wrote:
Can you hang lines* of equal length from either end, then use the
hosepipe trick at ground level to establish horizontal? Measure the
distance between your horizontal level and the bottom of the hanging
lines at either end, and the difference should give you the slope height.
* string, metal rod, PVC pipe... anything that you can put a hook at the
end to hang over the lip of the guttering... with something rigid enough
you might even be able to hook it from ground level with no need to go up
a ladder at all...
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