Fixing leaking garage

[ctsamados]

My garage has been leaking for a number of years after some roofers put on a rubber membrane layer on the existing chip board and then refused to rectify the problem when it was pointed out it was leaking and walked off the job.

I've only now discovered where its leaking from, which appears to be where the rubber membrane goes horizontally up the roof and is screwed to the walls that rise up above the roof. I've attached a photo that shows the roof, it also pools water in the middle as the roofers didn't slope it towards the gutter.

I've attached a photo showing the membrane going up the wall forgive the black stripes, that was where I painted the wall with bitumen as I was told the wall might be porous and letting in water.

I've attached a few photos where I've removed the ceiling and you can see the water leaking in through the chipboard and wooden beams.

I'm trying to put a claim in on my house insurance to get the roof fixed but if it's refused is there a way to fix the roof short of getting a whole new roof?

I was thinking of maybe getting roofing felt and attaching it to the rubber membrane and then taking it over the edge of the wall and attaching it on the other side.

Thanks.

 

[noseall]

My garage has been leaking for a number of years after some roofers put on a rubber membrane layer on the existing chip board and then refused to rectify the problem when it was pointed out it was leaking and walked off the job.

I've only now discovered where its leaking from, which appears to be where the rubber membrane goes horizontally up the roof and is screwed to the walls that rise up above the roof. I've attached a photo that shows the roof, it also pools water in the middle as the roofers didn't slope it towards the gutter.
View attachment 368429



I've attached a photo showing the membrane going up the wall forgive the black stripes, that was where I painted the wall with bitumen as I was told the wall might be porous and letting in water.

View attachment 368430
I've attached a few photos where I've removed the ceiling and you can see the water leaking in through the chipboard and wooden beams.


View attachment 368431

View attachment 368432

I'm trying to put a claim in on my house insurance to get the roof fixed but if it's refused is there a way to fix the roof short of getting a whole new roof?

I was thinking of maybe getting roofing felt and attaching it to the rubber membrane and then taking it over the edge of the wall and attaching it on the other side.

Thanks.

Some truly baffling details there. That small parapet wall should not be merging with the small faux pitched roof roof like that. And I cant see a (lead) cover flashing anywhere.
Anything is repairable, but getting it to last may be an issue there, given the way the walls and roof are thoughtlessly cobbled together.

 

[catlad]

I'm struggling to make any sense out of those pictures.

 

[Harry Bloomfield]

I've only now discovered where its leaking from, which appears to be where the rubber membrane goes horizontally up the roof and is screwed to the walls that rise up above the roof. I've attached a photo that shows the roof, it also pools water in the middle as the roofers didn't slope it towards the gutter.

So, looking at that first photo - is the water ingress, along that far wall, where you have painted the blackstruff, or where the standing water has collected, near the camera position?

 

[ctsamados]

Hi

The water ingress is along all the edges of the roof and seems to be directly below the rubber membrane section that buttes up against the parapet walls. The worst section was the bit that's painted. But it's also now really bad along the far end (not the section with the silly tiled pitched roof). These two bits are the sections I've photographed from the inside and show water on the boards.

I've been thinking a good way to test this theory would be to cover these sections. I have some concrete paving slabs that I'm going to rest at a 45 degree angle over the worst sections along with a tarp and see what happens when it rains.

I'll try and get some better photos but its night here ATM.