As you can imagine the labor required to hand scrub every square inch of roof sheathing is quite.
How to remove old roof sheathing.
Lengths remove the backing and adhere the sticky side to the roof sheathing along eave edges.
The first two are effective though often cost prohibitive.
Move the pry bar down the rafter to remove the nails if you can t pull the sheathing up by hand after.
Also keep an eye out for loose roof sheathing that needs renailing.
Removing mold growth from roof sheathing.
You can remove small amounts of mold covering 10 square feet or less of attic sheathing yourself but if the mold growth covers more than 10 square feet you should contact a.
But if the damage is more widespread like rot you really are stuck with tearing off the roof and replacing the bad sheathing.
When removing a damaged section center the cuts over the rafters so you can nail the new sheathing to the rafters.
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Be sure to use new sheathing that s the same thickness as the old.
And this does not include any interior damages.
If your old house has 1 inch dimensional sheathing 1x4 or 1x6 or greater you can use plywood or osb for the replacement even if you re only partially replacing your roof.
Leah from see jane drill demonstrates how to use an ordinary pitchfork to tear off an old roof.
Cut out and replace damaged sections as needed.
Code usually calls for it to project at least 2 ft.
Up the roof past the exterior walls so you may need two rows on homes with wide soffits.
Cut ice and water barrier to about 8 ft.
Mold remediation contractors use a variety of techniques to address attic mold growth including dry ice blasting hand sanding and encapsulation.
So there you go trying to save 1200 2000 on roof replacement by not removing old shingles and not repairing replacing rotted plywood will usually cost at least 4000 6000 more just in few short years.
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