Existing Decking

• 1). Open up a heavy duty tarp. Spread it over the exposed roof surface and ensure that it extends past about six inches on every side.
  
  
• 2). Position 1-inch x 2-inch scrap lumber that measures four to eight feet in length on top of the tarp, parallel to and about two inches away from the edge, around the entire perimeter of the roof. Allow no more than 18 inches between the pieces of scrap wood.
  
  
• 3). Using your claw hammer drive No. 8 deck nails through the scrap wood, the tarp and into the existing roof decking. The nails should be no more than 18 inches apart.
  
  

New Decking

• 1). Open up a heavy duty tarp. Spread it over the exposed roof surface and ensure that it extends past about six inches on every side.
  
  
• 2). Use bundles of shingles to weigh down the tarp when the slope of the roof allows.
  
  
• 3). Hook bungee straps through the tarp eyelets and attach to gutters or soffit, or wrap around the corner of the roof and hook onto another eyelet. This will protect the new decking without penetrating the wood.