Roofing problems are fairly common and can vary widely depending on the age of the roof, materials used, quality of installation, and environmental factors. Here are some of the most common roofing issues:

1. Leaks and Moisture: Arguably the most common problem, leaks can be caused by a variety of issues such as damaged or missing shingles, poor sealing, or issues with flashing. Moisture infiltration can lead to mold and rot, which can compromise the structural integrity of the roof.
2. Blow-offs, Tenting, and Billowing: Improperly installed or aged roofs can suffer from wind damage, leading to sections of the roof lifting or even peeling off. This is particularly common in areas prone to high winds or storms.
3. Poor or Faulty Installation: A roof that's been poorly installed can lead to a host of problems, including leaks and reduced lifespan of the roof. It's crucial to work with a reputable and experienced roofing contractor.
4. Lack of Maintenance: Regular maintenance is key to extending the life of a roof. Neglect can lead to minor issues becoming major problems, such as small leaks leading to widespread water damage.
5. Ponding Water: After rain or snow, water that remains on the roof is an indication of poor drainage. This can be a particular issue on flat roofs and can lead to leaks and material degradation.
6. Punctures and Penetration: Foot traffic, storm damage, or wildlife can cause punctures or penetrations in the roofing material, leading to leaks and other damage.
7. Shrinkage and Blistering: Certain types of roof materials, especially single-ply roofs, can shrink over time, causing cracks and splits in the roof membrane. Similarly, blistering can occur in asphalt shingles due to moisture or poor ventilation.
8. Poorly Installed Flashing: Flashing is used to seal and protect the joints in the roof, particularly around chimneys, venting pipes, and other protrusions. If poorly installed or damaged, it can lead to leaks and water damage.
9. Tree Damage: Overhanging tree limbs can rub on a roof, wearing away the surface of the shingles. Falling branches can also cause significant damage. Trees can also encourage wildlife, which can damage roofs.
10. Clogged Gutters: Clogged or improperly installed gutters can cause water to back up and potentially enter the structure, leading to rot and interior water damage.
11. Ice Dams: In colder climates, ice dams can form at the edge of the roof, preventing proper drainage and leading to water backing up under the shingles.
12. Cracking and Splitting: Over time, especially under extreme temperature changes, roofing materials can crack or split, compromising the roof's integrity and leading to leaks.
13. Granule Loss: Asphalt shingles can lose their granules over time, which can clog gutters and diminish the effectiveness of the shingles against sun and rain. 

To prevent and address these issues, regular inspection and maintenance are crucial. It's often advisable to hire a professional roofer to perform these inspections, as they can safely and effectively identify and resolve any issues.