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I have some weird problem going on with a recently painted wall. Someone asked me what it is and I’m not sure to be honest. Has anyone seen this before? It looks crystalline to me and under the paint? A couple of days ago it was not present. Thanks.

Thanks, almost what I need but I need the bit after that. I need the part that sticks out the roof after the flashing. Looks like a chimney. I am asking merchants as it seems crazy for a reliable boiler to have to be replaced due to this.

Yes I know. Just showing an example of the part type needed. Can you get replacements for an icos now?

Morning all, i have an ideal Icos he18 which is working but making a bit of a howling noise every so often. I had someone out to check it and they found nothing wrong but it was dark and they couldn’t check outside. In daylight I can see that there is a problem with the external glue and it has...

Found this thread very amusing I have to say. I do have an idea though. I cleaned mine by using an old toothbrush and neat bleach. I wore an old blue shirt and it had plenty white spots on it afterwards. However, it did remove the staining.

Hello, I am looking to insulate a suspended timber floor with 100mm insulation. I have the netting and wanted to use insulation batts or rolled insulation. Most insulation seems to specify cavity wall, roof or sound proof for floor. Does it matter which insulation batts I use? could I for...

Thanks for the info. Does anyone have a rough idea what these profiles cost per strip and how long they are? Thanks

Hi, Does anyone know about ArmourPlan roofing with regards to aesthetics? In the below image you can see vertical bars going down it which is more pleasing to my eye than something purely flat. Anyone know how this look is achieved? Is it just wood or steel profile which is affixed to OBS3...

Yes that’s roughly the setup. It’s how the rest of the house is designed. I could use bigger joists but then that means removing more earth to provide the gap between the timber and any damp on the ground.

Hi, If 'I'm building a suspended floor I will need to support this in the middle with a sleeper wall to stop excessive bounce. Span is around 3m. Do you have to build a honeycomb wall for the whole length, or is it permissible to build a number of piers and place a joist at a right angle to...

BCO inspection went fine. Thanks everyone.

So not adhering to mortar is pretty normal then?

Obviously no where. It’s just I’m laying before a BCO inspection and wanted to make sure it’s ok like that.

guys, Might be a daft question but when you lay a mortar bed and put the dpc on and smooth it down, is it meant to adhere to the mortar? Next day I found it just lifts off. Is that normal? Thanks

The AAV is a push fit and about 2.5m from the 90 bend which leads to the sewer pipe (all outside). You could rod from there right? I looked at swapping the bend that's been there for one with a rod eye but it would be in the ground. Is there a better way? I did also think about changing it...

Thanks. The original bathroom soil stack is vented and the pipe goes straight to the manhole. The second bathroom joins the sewer line via a clay y piece installed by Wessex Water. I will fit the External AAV on this part then.

hello guys I have two bathrooms in my house. They are separately connected to the public sewer with their own stacks. The main bathroom uses a stack that vents to outside. The second one is capped off just above the branch. Is it acceptable to install an external air admittance valve on...

Cavity wall pumped insulation that was left over?