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    Building a stud wall - how hard can it be - help!!

    Long thin 3mm pilot drill from Toolstation. If you have a clamp it's good for keeping everything lined up. Double stud round doors. I try to board vertically one side and horizontal the other to stagger joins. I've always found a well built 3x2 solid enough at standard ceiling hight.
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    Are these joists at risk now?

    For me, it's not so much that he's done it, but rather how excessively deep. He's probably skimping on fall as well and it still looks close to being halfway down the joist at the end. He could have notched them far more precisely using his fancy multi tool, or even notched out some of the...
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    Giant Notch In Joist

    If you have a multi tool, trim the notch square and hammer in a block of wood. Top half is in compression.
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    782mm internal fire door

    Those door stops are enormous! Just fix some strips up each side - you will be able to fill, sand and paint a lot easier than messing with the door. You would have to see how you feel about the architrave becoming a bit further back from the edge.
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    Slow Hot Water vs Water Heater

    Can you shorten the run using 10mm plastic?
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    Creating access to chimney in attic

    Yes. Not the best picture but it'll be something like this inside so you could remove a few bricks to find your individual flues and create openings.
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    External Wall Insulation Shambles

    The only good scheme anyone ever did was selling loft insulation for £3 a roll in B&Q. The idea that sticking a bit of foam on a 3 bed semi and rendering it is worth £15,000 is laughable.
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    Do I need a structural engineer or can I install Helical bars?

    Replace that cracked brick. Pity you've done the flashing as you may have been able to get one from under it. Have a look round somewhere unobtrusive for one.
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    Creating access to chimney in attic

    I can see an issue, other than the soot. Might not even need a lintel depending on how the flues are laid out inside and if you only need access to feed some ducting down.
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    Opening up under stairs - brick supporting wall above, What size of RSJ? -welded/bolted?

    You need to get this moved to the building section (I think you "report post" and the mods will move). I can't quite fathom out what's going on, but if your plan is to remove most of the masonry wall below the first floor you would normally insert a straight steel at first floor level to...
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    How to cover pipework clipped to brick

    10mm plastic is very useful in these situations.
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    RSJ Installation

    You'll need to trim a bit, say 15mm, off the ends of the steel. You could check with the SE but it won't affect it structurally.
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    Box Gutters... good or bad idea?

    1.5mm EPDM. No joins required, although they sell stuff for patching and joining you can generally just fold the corners.
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    Screw depth for heavy radiator

    I've just fitted two of these - my walls are "turbo" blocks, even more Wheatabix than normal thermalites, with plasterboard foamed on. I used 12mm plywood squares, with a second piece where the screws will go so 24mm in total. Glued (Stixall)and screwed (normal brown plugs but you only get one...
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    Joist hangers for skylight

    What he said, looks a lot of weight to hang off a couple of single joists - I think this would be my main concern. Regarding the hangers, you could contact the Expamet technical department for advice, or even just show your builder the technical information which clearly shows that's not...
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    Remove zone valve and room stat

    Thanks, yes it's dust, render, skim etc. I had to put some spit on the back to clean them up! I actually did all the wiring myself at the time, following the megaflo instructions, and understood how it all worked but that was a few years ago and it all looks like spaghetti to me now. Fortunately...
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    Remove zone valve and room stat

    I've just fitted a Wiser Hub and Stat. What's the best way to get rid of the old stat in the wiring centre so my new thing still works (currently just turned up)? It's connected Gr - 2 and Br - 3 in the wiring centre, at the stat it's (from the left) Bl (N), Br and Gr. Thanks.
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    Smart thermostat

    Mines not a modern boiler with any software, but there is a bypass valve on the heating system and there are two towel rails which I think are part of the circuit before it gets to the 2 port valves (so always on) - I don't think it will harm the boiler, just not be very efficient. I can't...
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    Large stone resin shower tray bedding onto Plywood overboard on floorboards - Tile Adhesive or Cement.

    Slow set flexible with SBR primer works for me. Rapid Set is for tradesmen who do it in a day. Never understand why they sell so much in the DIY sheds without flagging it up - I just picture diyers mixing a bag full then having a cuppa and a bit of lunch before getting started.
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    Shower tray with 4 upstands ???

    Presumably you fit the door inside the upstand. Mines a 3 upstand (also cheap from eBay) but could have worked with a four.
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