Silicone Coating Over Modified Bitumen Roof - Application Process

We show you the installation process of a silicone coating over a modified bitumen roof from start to finish. This video uses footage from our work done on the historic Hoosier Gym.

[@roberte5322]

Nice job. Would a primer block any bleed through from the bitumen roof.

[@willm3742]

What sprayer using

[@davesstuff1599]

Nice job guys.

[@insulatedroofingcontractor9967]

Thanks!

[@malibudan]

Must have acrylic primer when app over asphalt membranes per man spec, also, first app should be gray in color in ensure proper coverage on second app.

[@jacec5855]

What does that cost

[@Chris-uh7nm]

If you have a small section of flat roof that was coated with 100% silicone over the modified bitumen. And, you want to install another layer of torch-down bitumen to the whole roof. What would you do to make the torch-down modified bitumen stick to the small section with the silicone coating? Would this work: put another layer of silicone, then spread coarse sand on it, and when dried use the torch-down modified bitumen on it?

[@captaincucaracha]

Please do not try to torch down the silicone with a layer of sand, that won’t work well and could likely start a fire if a polymer is mixed with it. Removing the whole roof would be the best option, since there is no way to install a new torch down roof over the existing silicone roof. If that is not reasonable, then installing a new layer of nail base for the torch, throughout the whole roof would be best. Probably double the layering to avoid any fire hazards with the silicone below. But it should not have too many issues with a new nail base. Also useful are the cool self-adhered roll torch, no flame and the nail base they have are easier to apply overall

[@MJ12830]

You could install self adhering torch down over the silicone, to avoid entire removal.

[@DQ-su6qf]

Silicone mastic to all penetrations and possibly edge metal…

[@ombwallmagiccoat9681]

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