DIY roof leak repair is a manageable task for homeowners with the right tools. Start by inspecting your roof for missing shingles, cracks, or gaps around chimneys. If you find damaged areas, clean the surface to ensure proper adhesion. Use roofing cement or a new shingle to patch up small leaks. For minor holes, apply roofing sealant to create a waterproof barrier. Be sure to check for other potential issues, like clogged gutters or damaged flashing. Remember, safety is key, so use a sturdy ladder and wear protective gear. If the leak persists, consider calling a professional roofer for more extensive repairs.