How Much Weight Can My Attic Hold?
Think your attic is a storage unit? Think again.
Most attics are only rated for around 10 pounds per square foot. Load it with heavy boxes or furniture, and you could be looking at sagging ceilings, fire hazards, or serious structural damage.The key is to keep things light and spread the weight out.
Pro Tip: Choose Your Flooring Carefully Many people feel the need to use their attic for storage and go the extra mile to lay wood across the bottom chords of the truss system to create a makeshift floor.
While this can help distribute the weight of your items and prevent damage to the ceiling below, it's crucial to remember that the flooring itself adds to the total weight. For example, a 5/8" plywood sheet adds approximately 2.0 pounds or more per square foot, which directly reduces the amount of weight you have left for your stored items. Even with a floor, you must still spread items out and never stack them in one single pile.
What You Should Put in Your Attic
Light, seasonal items: Holiday decorations, old Halloween costumes, or a few small boxes of lightweight items are usually fine.
Empty luggage: Suitcases don’t weigh much and are perfect for attic storage.
Light plastic tubs: Great for organizing small, lightweight things.
What You Should NOT Put in Your Attic
Think of your attic like a delicate balance. Too much weight—or weight in the wrong spot—can cause the ceiling below to crack, sag, or even collapse.
Avoid storing:
Heavy furniture: Sofas, bookshelves, or dressers.
Appliances: Old TVs, refrigerators, or other machines.
Books: A box of books can weigh hundreds of pounds—way too much for attic joists.
Anything sensitive to heat or cold: Electronics, photos, clothing, and valuables can be ruined by extreme attic temperatures.
Signs You’re Overloading Your Attic:
Sagging or cracked ceilings
Doors and windows that suddenly stick
Creaking or popping sounds overhead
Bent or bowing roof beams
If you notice any of these, take weight out right away and call an expert.
When to Ask an Expert
If you’re not sure how much your attic can hold, ask a structural engineer or a truss company. They can tell you exactly what’s safe for your home.
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