Water collecting on flat roof

[Matt100]

Has anyone got any suggestions about how to stop water collecting (ponding I think it's called) on my flat roof?
The roof's fairly new but everytime it rains I get a big puddle about 1cm deep in the middle.
I thought about pouring some of this liquid felt / liquid rubber stuff into the area where the water collects to level it off a bit. Would this work?
Thanks
Matt

 

[noseall]

flat roofs perform better if they are kept wet or cool. a little ponding aint gonna hurt none. thats the reason for chippings, to trap a little moisture and offer shade.

is yours a bitumen/felt type roof?

 

[Matt100]

The roof is marine ply with two layers of felt / bitumen, sealed with a protective top coat. Will the water not ever eventually soak through?

 

[noseall]

no.

 

[Matt100]

Noseall, thanks for your advice mate, you've put my mind at rest.. Much appreciated.
I had the flat roof done about 5 years ago and it cost me just over a grand. I'm really regretting not having it fibreglassed, it was twice the price so I was put off but looking back on it I wish I'd forked out the extra money!

 

[noseall]

I'm really regretting not having it fibreglassed, it was twice the price so I was put off but looking back on it I wish I'd forked out the extra money!

do you think a fibreglass roof will last twice as long?

 

[Nige F]

The roof is marine ply with two layers of felt / bitumen, sealed with a protective top coat. Will the water not ever eventually soak through?

yes.....eventually in 25 years time

 

[mnb]

with respect, water should not pond on flat or any roof. All "flat" roofs should be laid to a fall to discharge all water. However, ponding is common and doesn't seem to cause medium term damage but if a leak does occur then you are going to get the whole lot in one go.