Pocster

Oh I’m not ! Problem is Architect is very quiet . One roofer said the problem was the architect just states EDPM- but of course doesn’t understand the detail .....

Going round in circles here ! I was thinking the gates at the front etc are the detail issue with EDPM. The gates are past the under ground dwelling I.e beyond the exterior wall . I could therefore put blockwork back from that for the edpm ; so it’s just a simple edge .

Another roofer said only system to use for this job is hot melt bitumen ( not to call it ashfelt ) . He was honest and said their systems EPDM and a liquid pvc were no good . Said he’d send me the details of the firm . GRP he confirmed would crack .

He said grp would potentially crack . Edpm I think has been ruled out because the detailing round the gates / entrance etc can’t be done . GRP makes this bit easier though .

Did you ? But parking on it ??? Block pavers on it ??? You a roofer @Onoff ; you might aswell be ????

Roofer just looked and suggested ashfelt......

A photo for demotivating....

Hang on ! @Nickfromwales is on my job next - said he fancied a challenge ?

Worth a call ?? https://www.excelroofingandcladding.com/liquid-applied-roofing-systems/

Yeah I know ! Ring Cemex Peter and argue with them ? Perhaps they “backdown “ when you ask if it is 100% waterproof to avoid liability. He also asked me what I meant by “waterproof” - my response was 100%

Called Cemex out of interest about their waterproof concrete. He blurbed on quite a bit and CONFIRMED on it's own it is NOT waterproof - but can be part of a waterproof system. He waffled a lot! ; very technical - so erm yeah; not helpful!

Just another thought. Why do I need either GRP or EPDM when you can tank; for example: https://www.permagard.co.uk/basement-waterproofing/cement-tanking

Architect gone very quiet as I take my pavers up......

I used Cedral Horizontal not too bad . Vertical a real pain !

????????

Put the cobra down ! ? Where does this fit in the plan ?? ??

But that means driving over grp - my architect ‘s nightmare . Might be more acceptable because it’s not at floor level .... Could even grp over the slab and EPDM - everyone’s happy then !!

All suggestions welcome ! Non standard build requires non standard solution!

Car parking area is essentially a giant upstand - but with edpm just on top ....

Exactly ! . But if *just* the top of the parking slab was EPDM it could overlap the grp . EPDM just to keep Architect happy - then driveway pavers ontop this so ‘tub’ ; sides ; upstands ; side of parking slab all grp - continuous .

Or perhaps just EPDM over the parking slab ( to keep architect happy ) . So EPDM overlaps grp on sides of parking slab . Sensible ? ??

Hang on ! Am I being thick !! What’s wrong with making a concrete parking slab and then simply grp up the sides of that direct to the floor . No need to grp under it ! Though grp would go over the parking area - that might be an issue ... ?!?!? ?

Might come to that just to save on height

This is what I thought . All depends on steel thickness required .....

The galvanised steel ‘mesh’ would be on stilts I.e raised away from the water