Roof cement and patching compounds for leaks, vents and flashing, with guidance on wet-weather use, how much to buy and when a patch is the wrong answer.
No roof coating publishes a field lifespan, only a warranty. Standing water, roof type and prep decide how long it lasts, with the coverage arithmetic for a 400 square foot roof.
Roof cement patches cracks, vents and flashing, but it is a patch, not a new roof. Here is how it differs from sealant, what wet and dry labels mean, which product fits which job, and how much to buy.
