Flat roof meets wall, i.d needed for sealing product

[Trekkie79]

Looking for the light blue / grey product that is sealing between the yellow down wall and the tar/bitumen roof (no idea what its called)

Job was done few years ago and the black stuff came in blocks and the guys came with big containers and gas bottles and melted and poured it on the roof, that was already concrete. But some of the gaps between wall and roof have cracks that weren't filled in, so rain is sneaking in at a few spots, so I want to get that blue/grey stuff and fill them in. The stuff is rock hard still and doesn't seem to crack so it seems to be doing the job. Any i.d for it would be appreciated, thanks

 

[^woody^]

Asphalt is the roof coating.

Use Acrylpol to coat the upstand and joint

 

[Trekkie79]

and it goes rock hard like the stuff in pic above?

 

[^woody^]

Not as hard.

It's like a tin of blancmange. It hardens, but stays flexible to deal with any minor movement.

 

[Trekkie79]

I ran the pic through ai and it suggested this, like hydraulic cement?

HydraDry WaterStop | Rapid Set WaterStop | The Damp Store

HydraDry WaterStop is a fast-setting, expanding plugging and repair mortar. When mixed with clean water and applied properly, it forms an effective seal, designed to work seamlessly with the WaterStop membrane.

dampstore.ie