paper over membrane?

[imported_noel]

I live in central Arkansas, and we really don't get the snow and ice that people get north of here. But, in recent years, we have had ice storms and it has stayed cold for the ice to stay around a few days. I figured I would try to do the best job i could and put on a membrane at the lower edge of the roof.
Do I need to paper over the membrane or just lap it over on the top edge?
Thanks.

[Wgoodrich]

I take it what you are calling a membrane is an ice bridge material and what you are calling paper is black felt paper either 30 or 40 pound felt.

If this is a flat roof [less than 2 in 12 pitch] I suggest your best bet for long term trouble free roof use a one piece rubber roof. This should last for years to come versus short term fix of roll roofing material.

If this a pitched roof more than 2 in 12 rise then I suggest a normal smooth decking called roof sheathing. Then 30 pound felt then at the bottom of the roof to start your shingles cut the flaps off the first row of shingles. Install a metal roof edge, then install those revised cut off shingles as a starter row. Then after that starter row is installed normal installation of shingles is all you need. Be sure to offset every other row of shingle joints by one half shingle using a half shingle to start the second row then next row a full shingle to start that row then next row again 1/2 shingle to start that row and continue alternating so the joints between shingles are staggered per row.

Old was was to turn a shingle backwards nailed on as a starter row with the rain shields up then cut a half shingle to lay another row properly over that upside down shingle.

Problem with the old way there is no stick strip to hold down the tabs of the first row. This double shingle one upside down then one correctly layed as a starter row created a hump causing concern for bridging of ice also.

New way creates the stick down strip of bottom starter row in correct place to hold down the tabs of the first row and you don't have the hump of the double shingle as the starter row.

This new way of the first paragraph creates a flat stuck down first row of shingles and allows the limitation of a chance of ice bridging due to the hump created by the old way of starting shingles.

Ice bridge material is not neccessary if your roof if more than a 2 in 12 pitched roof on normal occasions.

Be sure to check the life of warranty of your shingles some are 10, 20, and 25 year guarantee. Makes a difference.

Hope this helps

Wg