Fibreglass roof problems.

[simonPayne]

Hi Everyone.
I recently had a garage roofer install a fiberglass roof.
He boarded over the old boards and felt.
Since then there has been severe pooling at the back of the garage which has never happened before.
He told me it because felt absorbs water and fiberglass doesn't.
I asked for a receipt which is a bit of scrap paper with no business details as he doesn't want it to go through the books.
I cant afford to have roof re-done.
Please can anyone help with some advice?
Thank you

 

[tell80]

The first photo gives the game away, the GRP and the surface is all over the place.roof2 seems to be showing two roofs, or is that the gutter below the high roof?can you show a pic of that drip edge?
Just me but I would strip the main roof down to bare joists, and work back up to the OSB, setting the boards to correct falls.

 

[oldbutnotdead]

It's a rubbish looking job, good odds the extra weight of the additional boards and matey working on the roof have caused the joists to sag which is where your ponding is coming from.
He's talking carp about felt absorbing water- it doesn't until it springs a leak.
IF he's done a decent job on the laminate and topcoat (very big if, surface looks very rough in those pics) then ponding is a nuisance rather than a disaster.
Only real solution is rip it off and start again (and make sure the joists are adequate for the span)