The key to storing comic books in the attic is organization and protection. Use plastic sleeves for each comic book to prevent damage. Put them on shelves or in storage bins that won't tip over. Check on them periodically to ensure they're in good condition.
To store comic books in the attic right, first, make sure the attic is dry and well-ventilated. Then, stack the comic books neatly in acid-free boxes and label them for easy identification. Place some desiccant packs in the boxes to absorb moisture.