Temp

Good catch. I've found that once a pressure relief valve opens they tend to leak by even after the cause of the over pressure has been fixed. Think they get bits of scale in them? So I think there is a good chance you will need to replace the PRV as well as the EV but do the EV first. I wouldn't put corrosion inhibitor back in until its been running for a few days just in case the PRV does need doing.

I swear by mvhr, best thing we included. I think the constant ventilation helps a lot with air quality. The extract might even be reducing dust levels in the house? I think having trickle vents in windows makes that area colder and more prone to condensation on glass and frames. With MVHR introducing warner air elsewhere into the room the window area is warmer and less prone to condensation. We don't get condensation on the few metal framed windows we have. We dry laundry on racks in our bathroom and don't get condensation in there either. It doesn't even have an extractior fan - it relies on the mvhr extract which seems sufficient. Our set up is probably quite inefficient as we have wood burners that aren't room sealed. They only get used at Christmas so most of the time represent a big hole in the ceiling. All mvhr have some sort of filter on the input and it surprised me how quick they block up. That increases the power drawn. First time ours blocked it popped the 1A fuse on the mvhr fan ! So make sure you have easy access to the filters and plan on clean them every 3-4 months. Our filters are like a coarse aquarium foam and rinse out under a tap. They get blocked with dust, flys and moths etc.

Perhaps they have had problem with the bathroom fan installation leaking on other houses?

If th modem has a spare port connect a wire into that. Then at the other end install a WIFI Access Point that has a spare wired port. Plug the PC into that. If you have a wired printer you might an AP with 3 ports. Alternatively... If you like you can buy a switch and put that on the end of the wire from the modem. Plug your AP, PC and Printer into that switch.

Traditionally most houses had one or more open stacks (soil pipe) that vents above the roof and possibly others fitted with Air Admittance Valves (AAV) in the house. I think these days not every house on an estate is required to have an open stack so that might explain a mix up. That said some BCO still insist on one per house. Either way no house should have an open vent _in_ the roof space. So if that white pipe is a soil vent I believe it should have an AAV on the top.

Is this an additional route to getting PP or a replacement? If you wanted to build on the main road through a small village would you be forced to go this route or could you still apply for normal PP?

Reflective insulation actually has to be reflective. See Apollo lunar lander.

I wonder if the pump just fails to start occasionally?

I suppose you could test the gun by nailing their shoes to the floor.

Google says... The Vaillant F75 error code will display when your boiler can't register a pressure change when the pump turns on. This usually happens because of a faulty pump or if there's a problem with the water pressure sensor. So perhaps check the pump or wiring to the pump.

I hired one for a weekend to build a fence. They have an adjustment on them to control how far in the nails go. Do some test shots on the same thickness of wood and adjust according to the manual and off you go. Main advantage is they give you a free hand to hold the wood in place. Keep well away from kids!

3m x 1m is more like 30 sqf unless you were thinking of just heating a 1ft wide strip down the middle Nearer 1500W.

Weather compensation faulty?

I would seal the grout as soon as possible and consider more coats than the minimum recommended. I've used a few different makes and they all seem much the same. Some are possibly slightly more matt than others? Will need ventilation.

The CIL legislation leaves a number of grey areas that can only really be resolved by the courts. I recommend trying to find a near identical court case otherwise I think there is a very real risk you would loose the exemption.

+1 But I wouldn't just write "Proposed" on them. Write in big letters something like.. "Existing elevation. This application involves NO changes to the external appearance" I doubt it will go to committee but you would be surprised how dumb some of the older members can be. I've sat in the audience at a few meetings and had to bite my tounge. If you just write "proposed" someone might not like it and decide to vote against.

Sorry I've been away from the forum. 13A fuse will work but is too high. I think most heating pumps are <250W so a 3A fuse should be plenty.

The manifold loop pump is needed to circulate water around the floor loops. I suspect without it the return temperature to the boiler might be too high causing it to switch on and off so not delivering 6kW continuously. The pump will eventually be controlled by the room stats and wiring centre which will also open the appropriate actuators. If you want to run the pump without control I would remove the actuator heads so the loops are all on. Turn the mixer down to control the flow temperature. Turn it up gradually to dry the screed. Don't rush it or you will get cracks. Might get them anyway.

+1 If the supply to the manifold is hot, the actuator(s) are open and the pump is running then something is blocking the flow. Two possibilities are.. 1) Sludge in the pipes. How good a job did the plumber do in flushing the system? 2) The mixer/blender (on the left) is faulty. The only other thing I can think of is that the pump was faulty and they put the new one on the wrong way around. Check the arrow on the pump and compare with your other manifold.

I don't think that's true if that bit of your land is highway. Thats why the OP needs to know where the highway boundary is. Some houses own the land to the middle of the road.

I think that's only needed if it's in a Conservation area or it's listed.

OK so in short.. You think their proposed access crosses your land. That's legal if part of your land is public highway. You need to find out. I suggest writing to the highways department enclosing a site plan and ask if they can confirm where the highway boundary lies.

I would contact highways and ask them to confirm in writing that the highway extends across the green land as mentioned in the attached deeds. Then write to the planners stating that you do not need planning permission to form an access onto an unclassified highway which the highways department have confirmed includes the green land. If worried about future come back apply for a Certificate of Lawfulness. On the grounds that that highway extends to your property boundary.

AO were cheapest for appliances last time I looked. Great delivery as well.