Leaderboard

Can’t wait to get home from work today. The sun is shining. The roof should be dry. There’s a hole somewhere. I’m going to get home and get up on that roof with a hosepipe and find it. If it’s not in the roof surfacing then we’ll let the roof dry and hosepipe the roof light tomorrow. That’s my Friday night. Nothing I’d rather do ?

Well done on progress so far. It is certainly no fun doing this but I have seen a number of sites near me where the contractor has had to go back to remedy issues. The recent weather has brought lots of defects into focus. Once the soggy insulation is all stripped it should be easier to see what has gone wrong.

Good luck!

the air tight membrane will need to be reinstated. MBC advises yesterday that it can be patched with tape and a new bit of membrane. And then new insulation pump led in. So no issues there.

Stay away from that circular reveal I remember the blog post! So do you have to repair your air tight membrane after or is a vcl different? How do you do it go mad with tape?

Wow - your photo is almost identical to the mess we exposed today, condensation on the lower side of the OSB with soaked insulation. We have exposed even more of the area now. The middle section is the problem area. It has been a long day and we have just finished clearing up the mess (that pumped in insulation takes up alot more volume when it is pulled out!). We have looked back at all the build photos and the construction drawings for the upstands for the roof light. Its a bit of a puzzle but we are hypothesising that the water is leaking in through a mastic seal onto the frame of the rooflight (which sits under the glass). It is then leaking through a screw hole into the upstand (timber) (the frame was fixed into the upstand with vertical screws), travelling down to the bottom of the upstand where it joins the roof joists and then spreading both above and below the vapour membrane (the drips are coming from below the membrane, but the insulation within the membrane is soaked also. Of course there could be a leak in the roof material somewhere but that theory is not so obvious given where the water is being found and the lower roof deck being dry. Tomorrow and Saturday are supposed to be dry (no rain hopefully) so we plan to get some water up there and selectively test the various areas. I have messaged both companies inviting them to be present. I'll video the tests so we have some evidence because fixing this is going to cost someone some money. Thanks for all the advice, and supportive messages today. It is good to know you are all there.....

Really sorry to hear this, let me know if I can help out in any way. I have to take my hat off to MBC here, they were equally helpful when I had the render issue - sending Brendan to site for half a day to work with the contractor to get to the root of the issue two plus years after the house was built.

Exactly this. Took us nearly a year from start to finish. Two rooms were affected. In our case, it was due to poor sealing between the roofing membrane and the outlets through the parapet wall. Another one had started failing when inspected, so we insisted on all five being replaced. The roofer agreed to rectify, and fixed the membrane fairly promptly. Unfortunately, they then insisted on putting the rest through their insurer (even though the total costs were less than £2k from memory), which turned into a nightmare. Their attitude was so poor that if I hadn't had several million things on my plate I'd have sued them for every incidental cost possible, but in the end I decided the stress wasn't worth it and settled for the actual paid out costs. @Weebles, feel free to PM me if you want to talk about what happened and how we handled.