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Going to be laying a few rows of granite setts as a rumble strip at the entrance to our driveway. I already have a compacted sub-base of crushed concrete, which I'm going to lay them on. What mix should I use for bedding them? I've seen different opinions - some use a lean mix of sharp...

Oh god, just realised I installed the pump the wrong way round! Was flowing back to the boiler I would quite like to delete this thread due to embarrassment but I'll leave it here in case it helps anyone in the future! Thanks for your response

When I say nothing is happening - the valve is open, the thermostat is calling for heat but the boiler isn't firing up. The temperature on the boiler display though is 70, which seems unusually high.

Another question on this - I replaced the pump this morning after limping along with the old one for a few weeks. Put a new Grundfos UPS3 in. All seemed to be OK, heating working fine. However, then an E9 fault code appeared on our Worcester boiler. Apparently, this means the boiler was over...

My Grundos Alpha2 pump seems to have developed a fault recently. A couple of times a week, when the heating comes on, the pump doesn't get going. The light display just flickers extremely quickly. The only way I've been able to workaround the problem is by turning the entire heating system off...

Setting up a small workhop in my garage, which already has a couple of standard 13A sockets. I've bought a planer thicknesser which requires a 16A supply and type C breaker. Is it possible to just take a feed from a 13A socket to a 16A socket and replace the breaker with a type C? Or will it...

Thanks. Yes you're right, the concrete base is exposed and there's no eaves or gutter. I neglected to put a DPM down. The top of the base is higher than the surrounding ground level though so I guess what I could do is take a grinder to the exposed part of the concrete slab and just chamfer it...

Built a shed over the summer. Concrete slab and then 3 course of blocks (rest was timber framed). The exterior of the blocks was clad with a slate cladding left over from another project. Just noticed I have water seeping into the shed floor after all the rain we've had these past few days. It...

Thanks for the replies. A "basin" is exactly what we have - sloping driveway and to the right hand side of the garage, the garden has a slight slope towards the side wall of the garage, where there is also a side door into the garage. I recently laid some paving slabs down this side and I'm...

I've got a basement garage with a Hormann door. We've had two flash floods in two years, the last one the other day resulted in about an inch of water in the garage. We were away when it happened so couldn't do anything about it. We have a drainage channel outside the garage door but I think...

Just out of interest, finally diagnosed the problem as a non-return valve that had got stuck.

Alkaline

Yep checked that and all fine.

Drayton thermostatic valves. 5 rads.

Then I get hotter pipe out of the valve to the downstairs rads, but no heat in the rads

The pump seems to be working fine. As I say, upstairs rads heating up. Just noticed that now I have turned upstairs heating on, the pipe out of the valve to the downstairs rads has now cooled down but valve is still manually open. Which I don't understand as surely if its pumping to upstairs...

Ha! Upstairs heating is on fine, hot water fine. Are you suggesting a frozen pipe? I noticed a problem with it yesterday evening but it wasn't freezing outside by that point. Ice on the car this morning though. But I haven't had the rads off for decorating!

Yes. I was careful to note which wires went where.

Not sure. How do I check this?

Yes. I can feel hot water flowing through the pipe after the valve. But that hot water isn't reaching the first radiator. Thoroughly confused now!