Fibreglass roof advice

Hi we have recently had a new fibreglass roof on our outhouse which is built on the side of our house. Its all fine apart from where the roof joins the existing wall of the property. There is about a 5 inch 'crack' where its not sealed to the wall, or it had sealed but something has caused it to come away before it set...

To cut a long story short, the roofer is unavailable, and we are getting a few drips into the outhouse which has now been plasterboarded.

Can anyone advise how best to fix this? Some kind of silicon? or other sealant? What is the stuff they actually use when doing the fibreglass, can I get some of that just to brush over the 'crack'?

Cheers

EDIT: will something like this do the trick: http://www.wickes.co.uk/invt/241210

or: http://www.wickes.co.uk/bitumen-roof-waterproofer-25l/invt/241212/

Does this kind of structure not have any flashing?

Where you cut into the mortar judt above where the roof meets the building and put a strip of lead or other material that then is beaten to cover the join?

If they are seperate panels has one slipped down maybe in the frame?

Hard to comment really without knowing more about the construction of the new part.

You need something like this although ideally the roofer should come back and repair it= http://www.roofingsuperstore.co.uk/product/cromapol-acrylic-roof-coating-5kg-clear-box-of-4.html?gclid=CKTCi87KvrsCFabLtAod_CkAZA

Yes ideally it would be ideal for him to come out and sort but unfortunately due to circumstances out of either of our control I need to do some sort of fix.

Look at this: https://www.dropbox.com/s/s3o49wctd9x4scc/2013-12-20%2010.40.43.jpg

I'm not a builder but I just need to reseal where the join has curved up and attaches to the wall.

Yes ideally it would be ideal for him to come out and sort but unfortunately due to circumstances out of either of our control I need to do some sort of fix.

 

Look at this: https://www.dropbox.com/s/s3o49wctd9x4scc/2013-12-20%2010.40.43.jpg

 

I'm not a builder but I just need to reseal where the join has curved up and attaches to the wall.

You could use the stuff you linked to in your first post as it will seal the gap.

You could use the stuff you linked to in your first post as it will seal the gap.

Thanks Mafya! Much appreciated.

See this link for how it should have been done.

http://www.fixmyroof.co.uk/videos-and-guides/flat-roof-replacement/how-to-fibreglass-a-roof/

Essentially there should be a wall fillet attached to the roof which is overlapped by flashings as fibreglass can expand and contract with the temperature.

Looking at your sketch, brushing any product on or using a mastic is likely to prove very temporary - but will give you an instant 'patch' - Cromar products are very good.

A longer lasting 'temporary patch' would be to run a roll of 'flashband along the crack (there are different widths, but 150mm will give you plenty coverage on the brick and the new roof. Once it is on, lightly heat it with a blowtorch or hair dryer and it will stick) This temporary fix should last many years.

Ideally it looks like you need proper flashing pointing into the mortar course above.

There should have been a wall fillet fitted then a flashing.

We usually use 'lead mate' to seal the flashing into the mortar line but a strong sand & cement mix is fine.

There should have been a wall fillet fitted then a flashing.

We usually use 'lead mate' to seal the flashing into the mortar line but a strong sand & cement mix is fine.

spot on dan ta jeff