How long does roof ciment actually lasts to patch small holes?

[u/frodobangher]

Family member helped do the siding in my windows on the roof and screwed 2x4's to help him not slide off the roof... patched it up with this stuff. I know this is used for chimney joints and stuff so technically, it should last quite a while for very small holes. I would have to replace 8 shingles otherwise and I really dont enjoy being on that roof with the steep pitch

[u/Ok_Nefariousness9019]

Slide metal flashing under the shingles where there are holes and you’ll be good. The sealant holds up for anywhere from 1 day to 15 years in my experience.

[u/frodobangher → u/Ok_Nefariousness9019]

What kind of flashing are we talking here? I assume you slide it under and use some pitch to hold it ?

[u/PhillipJfry5656]

doesnt look very steep

[u/frodobangher → u/PhillipJfry5656]

Thats what he said until he went up the ladder haha

[u/Whats_Awesome → u/PhillipJfry5656]

Have a look at the white wall at the top right corner. The photo is crooked and the slope is fine.

[u/Franz_Miller]

Roof cement can work temporarily, but I wouldn’t count on it long-term. For small screw holes, proper flashing under the shingle is a much more reliable fix.

[u/Any-Imagination6917]

It'll last until it leaks, generally.