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    My shelves fell down! Advice needed...

    You could cut a sheet of, say, 18mm ply to fit the back of the alcove then screw your shelf brackets to that. Use some nonails type glue and as many c/sunk screws as you like to fix the ply to the wall - some of them will go into firm stuff. or do away with the brackets and use battens on...
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    Radiators with flow from the top

    ~If you do go for TRV's, and you do have a gravity system, I would strongly suggest that you get valves with low loss characteristics - they are usually sold as for single pipe systems and most are made by Samson but are marketed by many people including Ellis Miller, Oventrop and, I think...
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    LPG pipe sizing

    You could try the LPGA (liquid petroleum gas association) - I believe there is an affiliation with CORGI so you may be able to borrow from their library.
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    Wobbly Monoblock Mixer / Sink?

    Paul, I had the same problem fitting a new pair of pillar taps to an existing kitchen sink. The original taps were rigidly connected to the pipework, but as the new taps had shorter connection tails, I took the easy option and used flexibles, taking the opportunity to fit maintenance valves at...
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    Preformed Concrete Guttering

    Masona, I owe you a pint, it looks like just the job, in fact one of the pictures appears to show exactly the same arrangement that I'm burdened with. I'll get a sketch off to them for a quote. Thanks very much to all for the effort on my behalf , I'll report on progress.
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    Preformed Concrete Guttering

    Masona, thanks. - I did consider lead but as it's a gutter the fall is very shallow (1:100 ish) and I would need very large overlaps or welded joints. The other drawback is that this a bungalow, so quite a large footprint and long runs of guttering. Given the speed that I work with lead, I may...
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    Preformed Concrete Guttering

    Mmm, pond liner or maybe even DPM. Good idea D&J. Thanks for that one - it's now 'Option 4' - I'll look into it
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    Preformed Concrete Guttering

    Thanks Breezer, that's my option 3 - I will need to saw off the old stuff as each of the concrete sections is integral with the cavity closure and wall plate which the roof trusses rest on. I was hoping to find a way of sealing the existing channel. I've found a Dow Corning product which may do...
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    Ancient toilet cistern

    I made a diaphragm for a porcelain syphon from the lid of a margarine tub! I presume that it's still working. As an alternative, most modern syphons have a larger cross-sectional area than old ones (to produce a effective flush from 6 litres of water) You could remove the old and offer it up...
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    All Radiators not bleeding

    I presume that you've checked that the radiator valves are open , and as it is reasonably warm you will need both valves open if you have thermostatic valves on the flow connections - I usually isolate all my radiators during the summer to keep the de-oxegenated water in them in case I have a...
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    Preformed Concrete Guttering

    I have a persistant problem with leakage from precast concrete guttering. The gutter sections are about 30" long and effectively form the wallplate that the roof trusses bear onto. I think that the gutter was originally lined with a rubber solution which has long since peeled away. Some but not...
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    concrete worktops

    Ben, I got a budget cost of £250 - it was about 6 years ago - from a local concrete products firm Castacrete near Bristol - I think they are now part of RMC so they may not be as happy to do one-offs. You could just but ready made paving slabs and grind, then polish them, (some hire shops...
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    Mysterious 'holes' in gas pipes....

    Chris B has, in my opinion got the culprit. I once measured a potential of 65 V between a valve body on a buried 8" gas main and an earth rod. I investigated after a fitter reported a shock when trying to use the valve. The voltage I measured varied from 0 to 65 to -65 in precise 3 minute...
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    concrete worktops

    I considered making concrete worktops when building my kitchen cupboards - the problems come down to: 1 - getting the right mix; you need to use quite fine aggregate if you want to polish without grinding the surface first. I was going to use crushed quartz and marble dust. 2 - getting the...
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    Awful Smells

    Durgo valves are meant to be an air admiittance device - that is they let air into the stack or waste pipe when a negative pressure is developed. If smells are coming out it means that the seal is u/s - usually because of dust or dirt - they don't seem to work properly for much more than a year...
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