Shingling Second Story Off A First Floor Roof

How to shingle over existing shingles and how to shingle a roof how to install roof shingles shingle layout lines h.

Shingling second story off a first floor roof.

After snow melts it drips down from the roof onto the deck and freezes making an icy deck. Before you reshingle a roof read our step by step guide for adding new shingles over old ones. Lay the second row of shingles. I have a two story house in new england with basically a flat back but the second story overhanging the first story by 16.

Set the first shingle of the second row back a half tab 6 inches 17 centimeters from the edge of first shingle on the first row and so that the bottom of its tabs just touches the tops of the cutout slots on the shingle below. Beveled wood pieces called horsefeathers must be laid along the thick edges of the shakes to make a fairly flat surface. If you don t tear off the old layer you can t examine the decking. In fact the extra layer can reduce your roof s lifespan by up to 40.

For a second layer to be as good as a roof tear off you would have to have sound decking no leaks and a roof with no sidewalls where flashing is needed in order to tie the tiles in to the exterior walls. The metal flashing is formed with a hook edge and cleated on 12 centers. There is a doorway to the deck in the middle of the back of the house. Chances are your roof structure was designed for a dead load of one layer of shingles plus extra for snow and a safety margin.

Good quality composite shingles can weigh 350 to 450 pounds per square 100 square feet of roofing installed. Apply the starter shingle so that the top edge butts up against the bottom edge of the 2nd row of shingles and the bottom edge is flush with the edge of the roof. Another issue is that when you add in the second layer it can add extra weight to your roof. Asphalt shingles can be laid over cedar shakes or shingles however this is a roofing project best left to pros.

This will force you to replace your roof earlier than expected. The flashing extends up the wall at least 4 the flashing extends onto the roof a minimum of 2 inches 4 inches is preferable in more severe climate areas. Roofing second layer of shingles roofing. I m looking for a maintenance free solution to the icy.

The flashing needs to be installed before installing the roof shingles. The goal is to create a level surface for the first course of new shingles.