Every balloon arch you have saved on Pinterest was almost certainly made with air, not helium. Helium is expensive, it runs out, and latex balloons filled with it start sagging within a day. Air-filled garlands hold their shape for weeks and cost a fraction as much.
Here is how they actually go together.
What you need
- Balloons in four sizes. Most people buy one size and wonder why theirs looks flat. You want a mix — large, medium, small and a handful of tiny ones for filling gaps.
- A balloon arch strip. A plastic tape with holes punched along it. This is the whole trick.
- Glue dots. For sticking the small balloons into the gaps at the end.
- A hand pump. Ten minutes with a pump beats an hour of light-headedness.
- Command hooks or fishing line to hang it.
Every balloon garland kits we sell ships with the strip, the glue dots and the pump included, because chasing four separate items across three shops is how a fun project turns into a chore.
How many balloons?
The rough rule is 10 to 12 balloons per foot of garland once you account for all the sizes. A 6-foot garland over a dessert table needs somewhere near 70 balloons. A full 10-foot backdrop wall needs 110 or more.
That sounds like a lot until you see one built. Sparse arches are the most common mistake, and they are always a balloon-count problem, never a technique problem.
Inflate the day before
This is the single piece of advice that saves the most stress. Blow everything up the night before, build the garland, and leave it somewhere indoors and out of the sun. Air-filled balloons do not deflate overnight the way helium ones do.
Do not inflate every balloon to full size. Vary them deliberately — some at full, some at three-quarters, some smaller. Uniform balloons read as a machine made it. Varied ones read as a florist did.
Building it
- Tie in pairs. Knot two balloons together at the neck, then twist two pairs together to make a cluster of four.
- Thread the clusters onto the strip, pushing the knot through a hole and turning the cluster so it locks. Alternate the direction of each cluster so the garland fills out in every direction rather than lying flat.
- Work biggest to smallest. Get the large and medium balloons on first and build the shape, then come back with the small ones.
- Fill the gaps last. Glue dots, small balloons, pushed into every hole you can see. This is what separates a good garland from a great one, and it takes about ten minutes.
Most people finish a full arch in 45 to 90 minutes. Your first one takes longer. Your second takes half as long.
Hanging it
Command hooks at each end, one every couple of feet if the garland is long or heavy. Hook the strip itself, not the balloons.
Shape it after it is up, not before. Push clusters around, add a few balloons where it looks thin, and let one end trail down further than the other — perfect symmetry looks stiff in photographs.
If you are hanging it on a wall you care about, use painter's tape under the hooks. If it is going outside, put it up as late as you can. Sun and heat are what pop balloons, not time.
Common mistakes
- Not enough balloons. Ninety per cent of disappointing arches.
- All one size. The size mix is what creates depth.
- Inflating in a hot car or a sunny room. Balloons expand and pop. Build indoors.
- Leaving it to the morning of. Build the night before and enjoy your own party.
Questions we get asked
Do I need helium for a balloon arch?
No. Balloon garlands are built with air. Helium is only needed if you want individual balloons to float, and helium-filled latex starts sagging within 12 to 24 hours.
How long does it take to build?
Most people take 45 to 90 minutes for a full arch, including inflating. Your first will be slower.
Can I build it in advance?
Yes, and you should. Build the night before, keep it indoors and out of direct sun.
Ready to start? Our balloon garland kits arrive with everything in one box, sorted by size, with the pump and strip included.