Introduction
Problems arising from vacuum storage bags are not always obvious as reinflation can be slow, and most used bags are then tucked away out of sight. This can result in failed packing or broken seals going unnoticed for months, leading to damp, mould and a total loss of space-saving.
This article will explain the most common vacuum bag problems, why they happen, how to fix them, and how to prevent such issues in the first place when using vacuum storage bags.
Common Vacuum Bag Problems and What Usually Causes Them
More often than not, there is nothing wrong with the vacuum storage bags themselves; always check the packing and the seal to rule out user error before replacing the bag.
|
Problem |
Likely Cause |
Quick Fix |
|
Vacuum bag keeps inflating |
Bag isn’t sealed correctly |
Run your fingers over the seal twice after closing to make sure it’s completely closed |
|
Vacuum bag won’t seal shut |
Seals won’t shut if dirt, fibres, hair or lint are caught in them |
Check the inside of the seal for damage and run a dry cloth along the inside edges of the seal to remove any debris |
|
Bag loses suction after a few hours |
Small holes in the bag allowing air to enter |
Thin plastic can develop tiny holes that are hard to see, opt for high-quality, durable bags to prevent this issue |
|
Items smell musty or mould appears inside the bag |
Damp clothes or a poorly sealed bag |
Damp clothes can create mould or odours, and a bag that isn’t sealed properly but left for extended periods in damp or musty areas like cellars will begin to smell |
|
Bag tears or bursts |
Sharp objects tightly packaged, like zips, buckles, shoes, and hangers can puncture the bag |
Vacuum storage bags are not the right choice for sharp objects, consider vacuum packing cubes instead |
Why Vacuum Bags Leak, Re-Inflate or Lose Suction
There are four main reasons why you might be struggling with the vacuum seal on your bags:
The Zipper Seal Is Dirty, Bent or Not Fully Closed
Even a small piece of thread, dirt, fibre, or wrinkle in the zip can stop the seal closing properly. If this happens, run a dry cloth over the inside of the zipper to remove debris, make sure the zip is lying flat, and run fingers over the seal twice to make sure a proper seal has formed.
The Valve Is Loose or Not Seated Correctly
The valve needs to sit flat and close tightly after air removal in order to keep the seal. Check the valve is sitting flat before using the pump or vacuum, and once deflated, check the cap is sealed tightly.
The Bag Has a Tiny Hole or Weak Seam
Tiny punctures from packing sharp objects will prevent your bags from working properly, as will weak seams that have stretched over time. Avoid cheap bags with thin plastic and never pack sharp objects where possible.
The Bag Is Overfilled
You should only be filling vacuum storage bags up to 75-80% capacity as any more than this won’t leave enough room to seal the bag without strain, risking tears, stretching and not sealing properly.
Vacuum Bag Problems That Can Damage Clothes, Bedding and Fabrics
Below are the key concerns that users may have when using vacuum storage bags for home storage over extended periods, and quick solutions:
- Deep Creases and Flattened Padding: Vacuum bags work best for durable, soft items such as cotton clothing, towels, bedding and duvets. Avoid using them for leather, fur, delicate silk, structured blazers, wedding dresses and anything that needs to retain its shape.
- Musty Smells and Mould: Do not store freshly washed items unless they are completely dry, check that bags are still vacuum sealed a few hours after packing, and consider using silica gel packs for added moisture protection.
- Long-Term Compression Damage: Avoid packing heavily padded coats and structured items. For puffer jackets, feather-filled bedding or wool coats, use lighter compression or open and re-air bags every few months.
How to Fix a Vacuum Bag That Will Not Seal Properly
Vacuum bags should not be treated like rigid suitcase organisers; they need enough flexibility for the air to move out evenly. If bags are packed too tightly before suction, compression becomes uneven, can put strain on the seal, cause punctures, and not shrink in size as much as desired.
To fix a bag that won’t seal properly, we recommend the following steps:
1. Empty the bag and inspect it under good light.
2. Check the zipper track for fibres, hair or debris caught in the seal.
3. Wipe the zipper and valve area with a clean, dry cloth.
4. Refill the bag with fewer items, up to 75-80% capacity.
5. Fold items evenly so there are no hard lumps near the seal.
6. Close the zipper slowly using the slider, then press along it again by hand.
7. Attach the vacuum cleaner, hand pump or electric pump straight onto the valve.
8. Stop once the bag is compressed, not rock-solid.
9. Close the valve cap firmly and check for hissing.
10. Leave the bag for 15-30 minutes before putting it away.
11. If it re-inflates, test another bag to see whether the issue is the bag or the method.
How to Prevent Vacuum Bag Problems Before They Start
Prevention is always preferable to attempting to find and fix problems later. Here are some vacuum-packing best practices to follow:
Choose the Right Size Bag for the Item
Choosing the right size bag depends on what they’re needed for; small bags are best for t-shirts, underwear and children’s clothing, medium for jumpers and seasonal clothing, and large or extra-large for duvets, blankets and bedding.
Do Not Pack Damp or Recently Washed Items
If you’ve washed items in anticipation of packing them, be sure they’re completely dry before packing, as trapped moisture will cause odours and even mould.
Protect the Bag From Puncture Damage
Avoid sharp objects when packing, and avoid cheap, thin plastic when choosing your bags. Using quality, reusable vacuum bags and taking care with what you pack will help the longevity of your bags.
Store Bags in the Right Place
Avoid heat and direct sunlight on your bags for prolonged periods, and do not drag bags across floors as these actions can damage them. Store bags in clean, dry places where they can lie flat and will not be crushed or punctured.
Frequently Asked Questions
Why does my vacuum bag keep inflating?
Usually because air is entering through the zipper, valve, seam or via a tiny puncture. Clean the seal, check the valve, remove excess items and inspect the corners.
Can vacuum bags damage clothes?
Yes, if used for delicate fabrics, structured garments, leather, silk, fur, wool or padded coats for long periods. They are best for durable, soft items like casual clothing and bedding.
How long can clothes stay in vacuum bags?
For general household storage, a few months is usually fine. For longer storage, open, air and refold items every three to six months to reduce creasing, fabric stress and to check for potential odours.
Why do my vacuum bags smell musty?
The most common cause is trapped moisture. Clothes or bedding must be completely dry before sealing.
Can I fix a hole in a vacuum bag?
Small holes can be patched temporarily with strong clear tape, but the bag should be replaced if it is needed for long-term storage.
Are vacuum bags good for travel?
Yes, especially vacuum packing cubes or travel vacuum bags. They save suitcase space, but should not be overfilled because the bag may become difficult to reseal during the trip.
Should I use a vacuum cleaner or hand pump?
Both can work, depending on the situation. A vacuum cleaner is faster for large storage bags, while a hand pump or electric travel pump is more convenient for packing cubes and travel bags.
Looking After Your Bags
Most problems with vacuum storage bags come down to air leaks, reinflation, musty smells and tears, but these are easily avoided and often easily remedied. Taking care when packing, checking bags shortly after sealing them, and chiefly, avoiding cheap, poor-quality bags will stop 90% of problems before they arise. Sometimes, you can do everything right and punctures and leaks will still happen, but better-quality vacuum storage bags will see fewer issues and last you much longer.
Written by, Stephanie Dinnie, the Director of Operations at Packmate