Has this EPDM rubber been laid correctly?

[Rufio90210]

Had a flat roof balcony 7.5metres x 1.1m laid with EPDM.

I was under the impression that EPDM is laid as one whole sheet - however this installer has spliced 5 or 6 pieces together to cover the balcony. There is a little pooling which seems to be enhanced by the ridges from the splicing.

Im no expert but my mind would say splicing can only lead to problems with leaks in the future as opposed to using one whole sheet through out?

Thanks in advance

 

[Notch7]

It can be joined, Im not sure 5 or 6 pieces would be normal, sounds like he has used offcuts.

I dont know if you could a piece 7.5m x 1.1 without buying a big roll, Id expect it to have 1 join.

Sometimes its joined when you buy it.

I expect a pro roofing guy will be along to correct me

 

[catlad]

My supplier has a 7.5m roll and I would not join bit
together just for my convenience.

 

[Rufio90210]

My supplier has a 7.5m roll and I would not join bit
together just for my convenience.

But would splicing pieces potentially mean for likely hood of leaks in the future?

 

[catlad]

I can't give you a definite answer to that question
but can it be as good as one piece, I can't see it
personally.

 

[oldbutnotdead]

The stuff can be jointed but it won't look as pretty as a single piece and I suspect if you use the proper jointing material it is more expensive than using a single piece (though if the contractor has a load of paid-for offcuts from previous jobs then your balcony might be a classic 'got some tarmac left over missus, we'll do your drive real cheap' type effort. Did you pay top rate for the job or was it a cheapest quote wins? Any warranty offered?

 

[datarebal]

Some corners, upstands, pipe penetrations all require a join..Any pictures?

 

[^woody^]

You could glue lots of little pieces together to cover a roof, but that would not be correct nor to the manufacturers certified installation. However, properly made, the joints will last as long as the rest of the roof.

He has used off-cuts from his last jobs to cover this roof at no cost for the sheet.