That is what I would do.

Good suggestion

Same,, I've seen this quite a few times. water trickling down the cavity from opening above with failed sealant..

exactly what i said in my comment

I’ve got exactly the same problem with my front bay window, water leaking through the plaster above and it only happens when it’s raining a ‘blowing a hooley’ at the same time .....cut a small hole in the bay plaster to put my hand up and it’s soaking between the cavity ......checked the lead flashing around the UPVC window and although not cut into the wall I can’t see any obvious entry point .....my suspicion is that the bedroom window directly above is the culprit because the window is a ‘tight fit’ into the opening hence there is minimal sealant around the frame itself .....I’m going to re-seal the top window and do the ‘hosepipe experiment’ as an initial fix .....good call about the top window scenario 👏

You are right, I missed the fact that it is grp

I walked all the way up to Machu Picchu for this one. The air is a bit thin, hence my heavy breathing.

13 years old. NHBC is off the hook

Ah yes I missed that completely, I was looking at the hips and couldn't work out how they were done. Silly me.

Neighbour has one but the fake lead version, their daughter dropped a small vase onto it from the window above and it went straight through the grp.

Grp upstands should stop any driving rain missed by lead, be good to see a second part to this video 👍

I know what you mean. That flashing/soakers look a bit off. I think you’re bang on.

You are probably right but those cavity trays are supposed to get rid of the water so there is a problem there. Apparently there are several homes on the estate with the same problem

The British sorted it out years ago with a counter balanced concrete raft all the way under it. They could have moved it back but that would have been the end of a very lucrative tourist trade. A bit like killing the Lochness monster.

This was my thought. How do you overcome this? Other than not having a hep canopy in first place 🤣 Seal down the overlapping flashing with leadmate?

Thanks Charley I missed the fact that it is grp. Now I look I can see,

I had this problem with water condensing on the loft window, falling onto the inside sill which seeped down the wall onto the floor into a large area, then seeping into the ceiling below. Opened the loft window a little and problem solved.

You are right, the bottom brick should be left out until last knockings. I notice they are now asking for bricks down at dpc level to be left out so the droppings can be cleared. cavity wall insulation makes it tricky.

We are now being told it is a grp canopy so that changes everything. I missed that. So I now think penetrating damp on brickwork is the reason.

@@SkillBuilder Drip under the window above running back into cavity - which may be filled - tracking into internal plaster - its not much and just a couple of gaps are allowing in rainwater, tricky to find , that external storm coating might be the first try though

I think the tiles have been painted with one of these new-fangled roofing systems that claim to solve all roofing leakage problems. It doesn't look like GRP to me, its far too uneven.​@@SkillBuilder

Specsavers please, 100% obvious it is a grp unit, there is not a single gap between any tile and it's neighbour, however the biggest clue which is impossible to notice is the front fixing flange under the lead which stands out more than a panty line on a 50 stone woman

@@SkillBuilder Hi Roger, thank you so much for this update. That anomaly in the tile bonding I noticed has been haunting me, now that I know the whole thing is just one piece of GRP I feel quite relieved, I was wracking my poor old brain to think of a way to correct the problem that appeared to be caused by the design and shape of the hip tile fittings!. Now I see that behind the lead cover flashing we can see the up-stand of the GRP unit so it is reasonable to infer that no water ingress is occurring. What we are left with is the strange damp patches on the ceiling inside which are not consistent with water running down the brickwork or with foil backed plasterboard. Given the impervious nature of the roofing material and the probability of no vapour barrier I would suggest that the issue could well be caused by condensation, always one of my favourites!. This condition is often aggravated by temperature and humidity changes during cold wet weather when all doors and windows are closed the water vapour condenses on the cold underside of the roof drips onto the ceiling and looks very much like a leak. I cannot of course exclude your version, it is possible for water that runs down the window to enter a small gap in the bricks or mortar then to contact the back of a roof rafter dribble down the back of it and drip onto the ceiling, water will follow a wet line track as long as it does not go uphill, draining a puddle of beer on a table top by drawing it to the side with one finger demonstrates this very easily!. I have found tiny capillary track leaks in all sorts of odd places. If it turns out that I have hit the mark the 'cure' would be to install some upper and lower ventilation in the roof and replace the ceiling with the inclusion of a total vapour barrier, even foil backed board needs to have the joints taped. I prefer a single sheet of thousand gauge polythene. Cheers, Richard.

plumbum Latin for lead

Beat me to it!

Yes you are right. They are put in by the bricklayers

There is nothing longer than that

It seems it is grp so the tiles are fake.

@@SkillBuilder I realised that only after I posted. , at my last ACS the tutor wrote on the board RTFQ! DOH!

If they were tiles and not grp I would say that they need soakers under the tiles but this is a funny arrangement with the integral flashing

Glass reinforced plastic or Fibreglass, I'd imagine.

@@nickhickson8738 thanks.

Do you put a level on your celery sticks in the fridge?

I thought that but this is a GRP canopy. The tiles are fake. It is all one piece

Ho Martin That is what I thought but then someone pointed out it is a grp canopy so they aren't tiles. It is a piece of crap

@@SkillBuilder I think it's tiles that have been 'painted' with one of these so called miracle cure-all roofing leak solutions. It just looks too uneven for GRP.

Thanks Chris. I am sorry I missed the GRP bit. Time for new glasses

Probably similarly fitted. m.kzfaq.info/get/bejne/adt3os9lqdLRf5s.html

I can take any video down at anytime. I am not such as snowflake that I have to hide my mistakes. It just teaches me to be more careful

Let's knock Roger. He's a thoroughly decent tradesman and one of life's 'good-eggs'. It was an easy mistake to make when you're just looking at a video. The man that never made a mistake never made anything.@@SkillBuilder

There is a problem putting insulation on cavity trays. It needs looking at.

@@SkillBuilder I'm not blocklayer I do roofing but in Ireland we only use foil back insulation that don't absorb moisture as much as rock wool , rock wool is a thing of the past in my opinion it bridges damp from one wall to another

If you want a Latin lesson I will give you one. Plumbum is the Latin word. This video is about trying to solve the leak.

The video is indeed,but the section on plumbers relation to to leadworking, I thought relevant. I don't care to revisit my latin classes plumbarius!, " Plumbum ite domum " x100@@SkillBuilder

yes you are right. Hose is good enough

If he shines a torch up through the cavity he should see insulation so it is difficult to tell. If the water drips down that is evidence enough.

If you don't see the point in people asking questions and getting answers I can't help you. Fortunately a lot of experienced people have contributed their opinions to help solve this problem.

This is true. It only shows itself as a leak during prolonged periods of rain (days) or particularly heavy driving rain.

Hi Chris, given you have already opened a hole inside if you can get a look at the brickwork inside the roof line you should be able to tell from the cuts in the bricks if those trays are in the wrong place. The 'heel' - turned up end- of the trays shouldn't be visible within that roofspace, they should be further out level with the flashings. If you took a photo of that and another photo from outside focusing on the brickwork toward the bottom of those flashings? Also, if you google - 'risk guide stepped trays' you might find a helpful diagram of a similar bay showing stepped trays and where they should be positioned.

Hi mate. Well. a bit hard to explain without being able to upload photos. there appears to be a gap in the external brick/blockwork to the exterior wall (under the overlapping lead flashing, just above the upstand of the canopy) In this gap, which is approx 1 inch wide, there is a plastic membrane. I’ve since put a borescope up into the internal space of the canopy through the hole in the plaster. This membrane is then visible during the space within the canopy. Does not resemble a cavity tray as such. I’ve sent images to the insurance surveyor and he seems to think it’s a mechanism in which they’ve used to secure the canopy to the exterior wall. the mind boggles. Surely if there’s such a wide gap to the exterior of the brickwork, albeit under the flashing, it will be suspect to wind driven rain that will get under the flashing. Would there be any reason as to why they have left the gap? Other than shoddy workmanship. Hope this makes senses. Photos would have helped but unable to upload.

@chrisrand-ir7bs I don't want to give you the wrong advice having not seen it myself obviously. Wonder whether Roger would do an update if you can't get it sorted. Just speculatio then, but the plastic you are describing sounds like a DPC membrane. If you google 'stepped trays' nowadays, you will see a load of images of rigid plastic products. But 10 years ago stepped trays were often formed on site using flexible dpc membrane. You could be seeing the end of one of these where it's been turned up vertically in a perp joint as a stop end. If its longer than a single course of brick/block then it could be a vertical DPC. This is where a dpc is run up through the wall in a straight joint to stop moisture tracking from one side to the other. Possibly was a previous attempt at a fix that didn't quite work? There were a lot of claims on bays like that in 2013/14 when there was a very prolongued stormy winter and lots of these started to show up, when previously they had been fine, because it basically had never been so wet for so long before. The ten year warranty will have ended on the house now, but if this issue was raised and a fix attempted by the warranty provider / builder, they might still be duty bound to deal with it, I.e. they have never successfully resolved the claim that was raised when it was under warranty. You won't ever see them advertising that fact though! Just depends if you can get the policy information or not though. I hope you get it sorted bud

What an eyesore that added bay is with all that flashing.