saveasteading

That water is somehow being replaced every day. So it's either a very damp house (and a problem to sort) or fresh air in this very damp weather. I had this worry once. A concrete floor that the flooring contractor said was too wet.* We ran indsustrial dehumidifiers for 2 weeks, collecting several litres a day. Then we got a proper expert with a hhumidity measuring box stuck to the floor. It was fine so that water was simply coming from the air. * I learned then that this is a ruse to get out of the warranty. See also other discussions on BH about 1day per 1mm of slab for drying.

From what I've seen of heat exchanger construction it might completely block it.

If. I believe it is a skill that is fairly rare.

A spare room for a poorly or favourite sheep?

I'm confused by that. Any latency in dry screed is deliberately made on the surface for a smooth finish and should be minor. I can't see why you would have to do much to it. The main concern would be tamping ripples no worse than on a poured screed.

My thoughts exactly and I was going to have a read up later. So if anyone can point it out that would be helpful. I was once asked by the test guy 'what number are you looking for? It hadn't occurred to me before that I might want 3.1.

And a very comfortable shepherd. Isn't the point of a shepherd's hut that it's a bit basic?

I've been there more often than I'd have liked. Mostly with clients who didn't want to pay, basically.. ( 'never pay unless you need them again' policy) sometimes a rubbish subcontractors won't sort stuff. So I know you can be 100% right, win your case, yet still bd out of pocket and seething. We don't know your specifics or the right and wrongs... so all we can say is follow the processes firmly yet politely, check how much proof you have, and talk it through on here and/or with trusties.

All too common among weak and corrupt circles. Even getting genuine quotes in by a deadline ( at great cost to the contractors) opening them then telling their mate the price. I had a boss once who i'm sure only got work this way as schmoozing was his only skill. I didn't stay long.

The contract will include processes for valuations and disputes. You must follow this. The next stage will be you asking them to justify their requests for extras. You also state that there are quality issues, if there are. Then it gets expensive for both parties. There are specialist claims surveyors who work for you in presenting a reasoned and costed claim. The other side may do the same. Then layers and adjudicators get involved. If you're talking 20k dispute then it may be worth it. If the architect feels at risk they may take one side of thd other....again wrongly. Diy isn't likely to work. Anyway have a read up of the contract. And tot up the approx level of monies involved.

It does sound that way, esp as you weren't informed they were working together elsewhere. Have you proof of this or could you gather it quickly before protesting formally. For now just say you aren't happy and are reviewing before making any more payment. Is there a recognised formal contract in place? Who chose it?

Are these working chimneys? Why do you want cowls? Rain and bird guards or spinning ones? For the former, I googled and found 250mm easily, I suspect you may need to reduce the diameter to suit the biggest you can readily find. It might look odd and not keep the rain out unless modified. OR the non-mechanical ones look very simple and could be modified at hood and the legs, or fabricated even.

As necessary, if at all. The Steading isn't stuffy in he slightest. not as airtight as a newbuild would have to be, but plenty good enough.

It's just a primitive undulating washer sort of thing that retracts the bit then releases it. So it is still mainly scraping the surface. I wish I had learnt of SDS drills much sooner. I had thought they were only for concrete breakers.

It simply hasn't ever been a problem in any of our projects. About 5 family ones and many commercially. I think the reason may be that we only ever designed for the minimum airtightness requirement, so allowing some fresh air in. Plus window vents and openable windows always. If there is no problem with air quality then there is nothing to fix. On a few of our projects I feared a problem with stuffiness (school classrooms, nursing homes) but we discussed the options with the client and went for it. These were clients who would have had a quiet word with us if there was problem, but there hasn't ever been a word. This reminds me of the SE practice we employed for many years. They didn't do the portal frames part for us, but founds, other elements and other structure types Our main contact SE had either had, or knew about, many, expensive, problems with steel buildings and couldn't see how ours didn't ever have any problems. We concluded that we must have been lucky 300 times. Maybe, by building to the current reg's on airtightness but without mvhr, , we will have a stuffy building for the first time. If vents and windows won't do the trick, then we have a plan B which will be local extractor fans, discretely placed, perhaps linked to CO or CO2 or humidity sensors. Of course the fans' air will be replaced by un-heated air from the tiny leaks, and heated by our cheap electricity. It is a risk, but we are experimenting on ourselves.... But I'm confident it will be fine.... and lucky again.

I thought this was widely available. My battery drill has a setting on the torque setting ring, that switches into hammer mode. and a switch for 2 speeds. And lots of machines are rotation only and no hammer option. My very best drill, and without impact option, is a 25 year old Bosch. It is ultra smooth and effortlessly powerful, and with trigger speed control. I think the absence of features allows the motor and gearing to be dedicated to the one process.

We reckoned it was 20 years' payback for mvhr . We will spend half as much on a biggish photovoltaic array and battery and get a much better return. and putting both in would reduce the heat recovery benefit. ie if we are getting free power and then multiplying the energy by , say , 4 then using powered fan to recover free heat... That is logical, yes? We may also install big visible, attractive fans (Spanish style) in the vaulted areas to send down the hot air that has risen. The easiest way to increase the apparent efficiency would be to put rooms instead of vaulted space. Same energy nut divided by a larger floor area. But it is style and flashness.

I'm not paying £220 however good it is. I might get the Einhell pruning size as I have the batteries and my tools remain faultless after 10+ years and a lot of use.

Does nobody agree with me that the first issue is find why it is damp. It is unlikely to be a sealed building so extract fans will find air to pull in. There is a tendency to throw expensive technology at an issue before proper investigation. Gutter, dpc, render? @Potatoman where is the damp? On windows, walls, generally?

Good points. I will think further. I assume I wasn't sharpening the CsS properly: I had a simple round file, and thought I was following the instructions, but perhaps not. Thinking further, the hours of use for these won't be high so cheapo tools may suffice. And the tangled bushes will eventually behave better and the trusty bow saw and pruning saw will be usable again.

Let's go back a stage before throwing money at fashionable tech. Where is the humidity coming from? Is it just wet rooms and breathing? If so then extractor fans as above is the simple first step. But could there be dampness problems through the fabric?

yup. There will be a fair bit of heat wasted to the high vaulted spaces, and some biggish glazing. but otherwise it's normal. If the heat pump/s end up turning off more than expected then we can live with that. We are fortunate in having a known, proven big-time plumber who is advising foc first, then we are prob working cost plus. and I think we will buy the materials... again a favour and based on trust... Not that they will be cheap, but it is far too big for a smaller outfit anyway. The reason I am asking you, dear BH posters, is the overview, beyond the simple sums. eg noise and airflow. how lumpy a cable to get through the house. and the unknown unknowns.

Don't worry on that score. It's effectively a new building. The floor insulation was delivered yesterday. 4 lorry loads for 300mm th. No , my over-whimsical comment is that behaviour change is all we could do. Or add MVHR which we have decided not to after due consideration of cost/benefit. I'd have to move chairs to check but I think we were looking at 7 +5 kW and now 1 x 11kW. There seem to be lots.

Teach people to shut doors, and not wash dishes under a hot tap.

We've been assuming 2 x heat pumps because there will be two distinct zones. It's too big for one unit on single phase. But it is all one family building and we have 3 phase power available, already into the premises. I'm aware of the principles of 3 phase efficiency on motors, so presumably this will be preferable. Maybe also not require additional internal distribution pumps. But are there any downsides? The only one I foresee is family arguments over dividing the bill. Any technical issues?