Professional roof installers and roofing material manufacturers recommend a clean slate for both visual appeal and to be eligible for the roof warranty.
Materials needed to replace a shingle roof.
320 nails will be needed to install a square of standard 3 tab shingles assuming four nails per shingle and 80 shingles per square.
Make minor repairs on the roof if it is in good condition.
High wind areas and other types of shingles may need more.
A flat head shovel makes the job go faster.
Use it to remove the existing roof shingles.
The layer between the shingles and the roof itself.
Keep in mind that a drip edge will be needed to protect the edge of the roof from rot vents and other materials such as flashing or caulk.
Always install flashing around a chimney and other valleys where two roof planes meet as these areas are more prone to leaks if not protected.
If not replace bad wood with new plywood sheathing or 1 x 6 sheathing boards whichever is applicable to your type of roof.
Install new flashing metal flashing is often called drip edge along the bottom of the roof near your gutters.
Hammer or roofing nailer.
If you re only replacing a few shingles a hammer will do.
Use to fix or replace damaged or rotting wood prior to replacing shingles asphalt shingles.
U se to insulate and protect the roof from the damage of outside forces.
Nail the drip edge in place using your hammer and roofing nails.