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5 Years on and still no damp!

My house exterior is in need of some TLC and I am looking to get quotes to have the work done, it is going to be a big job needing scaffolding so I want to make sure I get all the jobs done that need doing. The main job will be repairing and repainting the windows and stucco and repaining any...

After 24 hours the central heating is continuing to work normally so I guess it was the actuator that was at fault. Thanks Ian and Alec for the confirmation of my diagnosis.

I realised that after I posted this I might actually be able to pick up a replacement valve actuator from ScrewFix which is a two minute walk from me. Amazingly they were still open and had 8 in stock. swapping it over was a very easy and now I can have room heating without needing to have the...

I have had a minor problem with my central heating for a couple of years now and finally got around to trying to work out what is wrong this afternoon. The system works but the central heating only heats up if the hot water is also requesting heat from the boiler. This means that when it gets...

I might add that that I had already programmed in the number a 24hr emergency plumber in my phone just in case the simple compnoent swap turned into a scene from a "Carry On" film :-)

Just a quick update; I emailed Grundfos over the weekend with the symptoms and they got back to me at 8:45am with a reply (impressive customer service) saying that it is not a problem they are aware of but probably something gone wrong with the controller and the pump almost certainly needs to...

I think the problem he had was everything was seized up and being at the back of the airing cupboard made access difficult. May be I should be more confident in my abilities :) I have just emailed Grundfos to see if the pump is under warranty (they seem to be offering a 5 year one now), it has...

I have just fired up the system manually and the LEDs in the pump flash madly and the pump does not spin, after a short time I hear the boiler begin to bang. If I switch the system off then the pump continues to flash madly for a short time then turns itself off. When I restart it the pump non...

Thinking this through (again with the assumption that the fault is not the boiler) even if one of the motorised valves was sticking shut the pump (if it is working properly) should be able to supply enough water to the boiler to stop it over heading via the bypass. If however the pump is...

A bit of a follow up on this.... In the end I hacked back all the damp plaster back to the original render or brickwork then used waterproof cement to extend the existing render to above ceiling height. I then re plastered painted etc. So far after several months of London rain there has been...

Hi Phill I don't remember if I saw that symbol or not, I did see a U1, U2, U3 symbol which I think means over 100C, it then basically reset itself automatically and when it fired up again (with me doing anything) everything was fine. What I will do tonight is switch the system off before I go...

The pump is on the maximum setting, when I first had it fitted I did try the auto settings but I found the rads were not getting hot enough.

The bypass pipes disappear under the floor I am assuming they connect to the heated towel rail in the bathroom but that is about as much as I know. When I looked at the system just now the value opened as soon as the HW system came on, but again, the system is working perfectly during the day...

I have had a look at the valves and they both seem to be operating normally. In fact the one that I recently changed is operating the hot water side. The pump does over run after the CH/HW is switched off and there does appear to be some sort of bypass pipes in the system (The pipework was...

Hi, A strange fault has developed over the last week or so in our Worcester Bosch 40CDi (conventional) based central heating/hot water system. Several times over the last week or so there has been load banging coming from the boiler when it first fires up in the morning. I was able to see what...

Thanks, I had assumed it was basically dry. My real concern and the original reason for starting this thread is to find out if it is OK to but a waterproof render over a wooden beam? My in-laws have a very old timbered house and when they first bought it someone had put a cement render on the...

I have also noticed that a couple of the bricks above the beam are crumbling and quite damp. Now wondering if I should replace them.

The flat roof has the asphalt running up the side of the wall, the builders who repaired the parapet found that a lot of the mortar had crumbled so they rebuild the top couple of courses of brickwork. They then put felt over the brickwork which overlaps the asphalt before putting the coping...

Attached are a couple more photos. Only thing to say about the roof shot is that the felt extended under the concrete cap stones which drain on to the flat roof. There is no gutter. I added the waterproof tape a few years later to see if it made any difference (it didn't). I have had the...