Best way to fill cracks- asphalt over felt flat roof

[Tim Brennan]

My FiL has a flat roof on his extension. We are looking for a way to fill in the cracks. Any recommendations?

Here’s a video showing a bit more

 

[Vondawg]

How about some elastomeric coating like on an RV ?

https://www.lowes.com/pd/APOC-243-4...Y5pDTyJu7GJAGqZBE8AUTA6r3WTJe77waAoLmEALw_wcB
Henry and Rust-olem makes simular

 

[Tim Brennan]

How about some elastomeric coating like on an RV ?

https://www.lowes.com/pd/APOC-243-4...Y5pDTyJu7GJAGqZBE8AUTA6r3WTJe77waAoLmEALw_wcB
Henry and Rust-olem makes simular

Thanks but I don’t know if that product is available in the UK

 

[Vondawg]

@Tim Brennan
Or just have it re-hot tar mopped

 

[GaryA]

If it is leaking then why not try EPDM roofing sheet on top

 

[Cheese]

Years ago I helped my neighbor install a new roof on one of his apartment buildings. The original roof was a torch down roof that had developed a few small leaks. We rolled on a bitumen/polymer material over the old surface and then laid down a large EPDM sheet over that. We spent as much time on just the flashing details as on the flat roof repair itself.

 

[P_K]

As above, either new felt or an EPMD membrane with new lead flashing. That roof is at the end of its life and those cracks cannot be filled in any permanent way.

 

[peter halle]

Years ago I helped my neighbor install a new roof on one of his apartment buildings. The original roof was a torch down roof that had developed a few small leaks. We rolled on a bitumen/polymer material over the old surface and then laid down a large EPDM sheet over that. We spent as much time on just the flashing details as on the flat roof repair itself.

I had to do a few EPDM roofs under some decks, and you would roll right along with the membrane figuring you were ahead of the game - and then came the all too important flashing details, which literally did take longer than the rest of the roof.

Peter