This is the perfect consistency for sealing small gaps, it's not too thick and won't fill big gaps, but it is just that Right right consistency to flow into a typical crevice and create a good seal. I bought a tube of roofing waterproofing from a local store with orange labels and it turned out to be a poor substitute for that stuff. I had to fix four roof vents and a few other spots and a tube of Geocel wasn't enough. I don't normally write reviews for these materials but this product is far superior to traditional sealer and I will definitely use it again when I need a roof sealer. Highly recommended.