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I like this idea as after a bath, I find that I feel quite warm and would need less heating anyway. Also made me think of something that Joe90 was saying about putting in a bit of pipework into his slab where he expects to get some solar gain (he ain't realised that it is always cloudy in Cornwall yet). Using a multiple coil set up in a slab would also give some flexibility if things don't work according to plan i.e. you can add or remove extra heating easily.

This thread is intended for short term excellent offers, perhaps especially for normally non-discounted materials and things which can be stocked for the future. It is intended to be complementary to the longer term material on the "Rewards" thread. We all know about regular good value such as Wickes for Postfix. I am not sure if there is a need/call for it, but I spotted a couple so I thought I would give it a try.

Nice beer? Saw it lurking there. Aldi are doing Double Dragon for £1.25 a bottle - imagine Nick was virtually weaned onto this stuff. Too far east from home for me to enjoy it - only realised this when I finished my second one last night. CC

As I said in the OP, it was knowing what to call it. It's obvious that it's not am 8mm hex drive socket, but it's a magnetic nut runner. Why didn't I think of that? I will order one of those and one of the socket adaptor sets so I can do other sizes with a standard socket. P.S you might have noticed CPC's website search tool is not the best.

If you haven't already got a set, i would recommend getting the adaptors you linked in the OP, I very rarely do anything up by hand since i bought mine I searched 8mm and got there eventually http://cpc.farnell.com/silverline/277866/magnetic-nut-driver-8mm/dp/TL17319

Finished it today: And here are those plastic headed screws:

You have incorporated the SEF (Stool Examination Facility) just in case you have Germanic visitors, haven't you? "Further research has revealed that the German toilet is in fact designed to facilitate stool examination. This is a wise, healthy practice, argue Germans, a person's best defence against intestinal disease, water-borne parasites or worm-riddled, undercooked pork sausage. " Y http://asecular.com/~scott/misc/toilet.htm Once we have Brexited that could become a European standard. And you will need to instrument the digestive process by supplying a sweetcorn dispenser, so that transit time can be measured. Will you be enforcing Sitzpinken? I say install a urinal and issue SheWees, at least for your mancave loo. (At this point Nick's skin starts crawling.) Ferdinand (Update: should be Sitzpinkeln - that is a noun not a verb. Thought it looked suspicious)

They usually don't. The most a 'conventional' roofer would do is cut a cross in the membrane and poke the flue through it. The breathable membrane only needs to not let any accumulated water / dew etc through to the fabric of the dwelling, so making some form of upstand at the highest point would satisfy that criteria. As long as the outermost junction is rain / watertight then your protected against water coming down the flue wall, and if your sealed at the airtight layer your ok for airtighthess. The breathable membrane is the least of your concern or liability imo.

If it's airtightness you're looking to keep, take a look at something like these grommets http://www.phstore.co.uk/airtightness/airtightness-grommets/roflex-airtightness-grommet-for-pipes.html

Just so organic.....sensual even! Don't you just want to get naked, roll around on that and become one with it? Well are several reasons why not. 1. Working at height. Not sure how you can be harnessed and rolling at the same time. 2. Performing lude acts in public. I suppose you could put a scaffolding screen round it and carry on all weather's. 3. Somebody might think you had a mental health problem and section you thus slowing up the day job -assuming you are not already banged up under 2 above, leading to loss of income, divorce and penury. Not to mention having to give the other half 50% of you power tools. My advice - get over it!

I would like to try building one just for the experience but they are not everyone's cup of tea.

@ProDave Dave, this is the point that would like to challenge: the need for a regulating manifold (and therefore a buffer tank to prime it). Let's just say that you want to circulate maintain a steady state by circulating water at 22°C which results in a heat transfer rate of ½kW into the slab. One method of doing this is to your ASHP continuously at an O/P of 22°C, say; another is use to buffer tank and pump 3kW into it at 35°C for 30mins or whatever your hysteresis on your buffer controls dictate, and then have a "space" of 3 hrs or so whilst this is slowly bled into the slab at this constant 22°C. A third strategy could be to take your ASHP down to whatever is can run at at its lowest output temperature and run it for 30mins say heating up the slab then turn it off, but leave the recirculation going. You don't need any temperature sensors in the slab, just a temperature sensor on the return flow from the slab. Circulate the water and wait whilst the slab (return flow) temperature falls. When it reaches 22°C, give it another 30 mins of ASHP top up and repeat as necessary. You don't need any fancy control of the ASHP, just a simple on off demand, as all you are controlling is the mark-space ratio. The numbers might need tweaked (and trimmed down to average out the sawtooth effect) and you might need a compensating adjustment for typical ambient/trended air temperature which modifies the turn on temperature, but in principle this could all be done with a few sensors and some control logic. No buffer tanks, no precision manifolds. OK I am a little different from most of you guys in that I am comfortable with this sort of instrumentation and IoT devices, and I've done quite a bit of embedded development over the years, so I am a lot more comfortable in doing this in S/W than COTS control H/W, but once I've gone around the buoy a few times and (if I've) got a workable system, then the approach once documented should be transferable for others to an off-the-shelf implementation.

I have to admit I'm NOT a DeWalt fan but bought one of their right angle drill attachments on a special a while back for something ridiculous like £12.99. Just bought another for a good mate (who's a die hard DeWalt fan) from FFX albeit at a higher price. http://www.ffx.co.uk/tools/product/Dewalt-Dt71517T-Qz-5035048089798-Right-Angle-Torsion-Drill-Attachment?gclid=CK_tkPflz9ACFRLgGwodAGAK-Q The reason for posting is I've not been able to find cheaper so this seems the best deal. Second, the thing is nigh on bulletproof. Not sure of the max torque it takes but I've really been giving it some beans. Seems really strongly made. It's much slimmer too than "proper" right angled drills. It takes btw ONLY hex screwdriver type bits. (I've hex ended drills, c'sink bits, socket adapters and so on I use with it ). Wish I'd bought two or more when on a special! One thing is that IMHO the bits that come with it sit in maybe a tad too far.

How to mark out plaster board for the window reveal: Take one child: Give it a pencil and a torch:

I showed the roll dispenser idea to my boy..... "Oh Christ we'll never get a bath!"

Ah well Nick no injury was caused and my wife has stopped crying so everything s OK. I have removed the defected (see pic below) area and will start again tomorrow.