My roof is 10 12 pitch.
Metal roof fstrips.
Zincshield pure zinc strip to avoid ugly roof stains from moss algae fungus and mildew 50 foot roll includes bag of nails made in the usa 3 5 4 6 out of 5 stars 124 49 99 49.
Make sure to consult local building codes before having a metal roof installed directly over old shingles.
You can cut strips of zinc flashing copper and lead work too and slide them under a course of roof shingles to kill lichen and moss growing there or you could just buy these premade strips from shingle shield.
They are also easy to install to fit various metal roof configurations in any construction applications.
Or installing the new metal roofing over furring strips 1 x 3s or similar will raise the metal and provide a ventilating air pocket between layers.
Metal roofs depend on thin strips of wood known as furring to allow air to circulate and prevent rot.
My roofer told me that he was applying the closure strip at the top of the ends along the ridge vent but was not placing them along the bottom because it would cause condensation issues between the old roof and metal and my metal roof would not last as long as it should.
When a strip is meant to be used on top of the panel it s referred to as an outside foam closure whereas if it s meant to be used on the bottom of the panel it s called an inside foam closure.
But roofers can install a vented metal roof that eliminates this potential problem.
Made of cushioning durable and water resistant foam materials metal roof foam closure stripscan be easily fabricated to any custom wanted sizes.
They are compatible with many different kinds of synthetic underlayment.
Furring strips are required if you plan to place a metal roof on top of existing shingles.
Of course with metal shingles as opposed to panel roofing the mounting or engagement strip if used or shingles if no mounting strip should lie flat on the water barrier or bridge across up and down slope firring strips at the manufacturer specified spacing.
The metal roof foam closure strips can seal the gaps of the roofing panels.
If you hire a contractor they can explain all of this to you.
They can also be used as cushion seals foe polycarbonate roofing panels.
Foam closure strips for metal roofing foam closure strips for metal roofing are specially formulated with unique wave designs for premium sealing of metal roofing panels.
The strips fill in the space between the roof deck the base of which your roof lays and the high part of the waves that make up a metal panel.