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Question DetailsAsked on 9/9/2013

Which re roof leak protection is better and lasts longer, peel and stick or hot mop

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1 Answer


Hot mop, on a flat built-up (tar and felt) roof is a permanent repair, equivalent to the original roof. Peel and stick is a poor third place emergency repair for a few days until a permanent one can be made. Second best is a fibrous bitumastic sealant.

It is interesting you mention peel and stick - that is usually for membrane roofs like EPDM and Rubber, not built-up roofs where hot mop is used. Generally, a hot mop roof is too uneven for a peel and stick to adhere tightly all around, and will leak underneath the edges. For this application, most of them require covering with asphaltic repair material, so really no different than just using a bitumastic sealant in the first place.

Answered 6 years ago by LCD

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