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What should preprare metal flashing with before you use torch down roofing materal

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The metal should first be embedded in roof cement then fastened down, then the top flange should be treated with asphalt primer and allowed to dry per the manufacturers recommendations. Dry time will vary based on ambient temperature.

I prefer to install a strip of modified bitumen upside down under a drip edge which was treated with asphalt primer.  I mechanically fasten the modified bitumen to the base sheet, prime the top of the metal edge, mechanically fasten the drip edge then torch the new modified bitumen down.  It keeps a solid, leak free surface even if the bitumen fishmouths around 2 joints of metal flashing coming together.  It also keeps from running nails around the perimeter leading to another penetration but on very flat roofs it can cause ponding because of the double thick layer.  

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Asked: How do you do torch down roof?

How do you do torch down roof?

Asked: Torch down roofing

see vidio on how to do torch down roofing. I cant find one. I am redoing an old roof with a second layer of torch down. I am a carpenter and watched this done years ago but I need alittle confidence.

Asked: Torch to

how do I get video on torch down roofing?

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Torch down roofing

I don't know of one. It is something that is learned. Proper heat in the right places. It is kind of like welding. Too much heat could be bad as can not enough. You could burn down your house if you do not know what you are doing.

Torch to

You can go to the web sites of certainteed, gaf, or firestone and call them to get a video or you can go to a supplier that sells roofing materials and they might have one. (BRADCO, ALLIED QUALITY SUPPLY)

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You must screw the bottom of all metal roofing sheets down. Use metal roof lap screws to screw down ridge every 2 feet for R-Panel, and 1/2 metal roofing wood screws for V-crimp. R-Panel will come with a foam enclosure similar to bottom enclosures to fill in wide gaps at top of sheets.