How to make a balloon arch for a wedding

By Wedding Offshore Team

A balloon arch is a project you can build yourself, in stages, with simple equipment. This guide explains what to gather, how to plan the shape and colours, how to build and fix the arch, and what to check with your venue. Allow time to practise on a small section first, because the technique is easy to learn but fiddly at first.

Check the rules and the space first

Before you buy anything, find out whether you can use balloons at all. Ask your venue:

Whether balloons are allowed in the room or outdoor area you plan to use
Where the arch can stand or hang, and what you can attach it to
Whether there are any rules about helium, or about tape or fixings on walls and ceilings
Who clears the balloons at the end, and when

Measure the space too. Note the height of the ceiling or the width of the doorway, and how much room guests need to walk past. Your measurements decide how big the arch can be.

Choose your colours and sizes

A balloon arch looks best with a clear plan. A few ideas:

Two or three colours in a repeating pattern, such as one main colour with two accents
A single colour in different shades for a softer look
A mix of sizes, with larger balloons as the base and smaller ones filling gaps
Added greenery or paper flowers tucked between clusters. Our guide to decorating a wedding arch with flowers explains how to fix them securely.

If anyone in your group has a latex allergy, ask them before you choose, and check with your supplier about the materials. Order a few more balloons than you think you need, because some will not inflate evenly or may pop.

Gather what you need

A basic kit usually includes:

Balloons in at least two sizes
A flexible strip, cord or frame to hold the clusters
A pump, hand or electric
Ties, clips or tape to join the balloons
Scissors
A stand, frame or hanging point strong enough for the finished arch
Spare balloons and a few spare ties

Our wedding arches are a good starting point if you want a frame to build on, and our backdrops can sit behind the finished arch.

Build the arch step by step

Work in a clear area and keep your balloons sorted by colour and size.

Measure the frame or the span. Decide how long the arch needs to be and mark the centre.
Inflate the balloons. Fill each one to a matching size, using a template or a cardboard circle to check. Keep sizes consistent within each group.
Make clusters. Tie four balloons together in a small bundle, twisting them so they sit in a rough square. Make enough clusters to cover the span.
Attach the clusters. Fix each cluster to the strip or frame, working from one end to the other. Alternate colours as you go.
Add smaller balloons. Tuck them into the gaps to fill the shape and hide the strip.
Step back and adjust. Look from the front and from the side, and move clusters until the shape looks even.
Add finishing touches. Greenery, ribbons or flowers can go in last.

Practise the first few clusters before you commit, because the way you twist them sets the look of the whole arch.

Fix it in place

The most important step is making sure the arch is safe and steady. Check these points:

The frame. Make sure the stand or hanging point can take the weight of the finished arch.
The ground. A stand needs a firm, level surface. Outdoors, ask your venue what is possible if the ground is soft or sloping.
The balloons. Press along the arch to check that no cluster feels loose.
People. Keep the arch away from candles, heaters and other heat sources, and from anywhere guests might brush against it.

Outdoors, wind and sun both cause problems. Check the forecast, and think about a sheltered position. Ask your supplier how your chosen balloons behave in different conditions.

Plan the timing

It is easy to underestimate how long an arch takes. Build a small section to see how long it takes you, then multiply to estimate the whole arch. Plan to finish well before guests arrive, and ask your venue when you can start.

If you are making the arch at home and moving it, decide how it will travel, who will carry it and where it will go in the vehicle. A section that is built in pieces is easier to move than a single long arch.

Keep the cost down

Make the arch smaller or place it against a wall, so you need fewer balloons.
Use a few large balloons for volume and smaller ones to fill.
Pick colours that are easy to find in the sizes you want.
Build it yourself, and practise first.
Reuse the frame for another part of your day.

Next steps

Check the venue rules, measure your space and build a small sample section. If the arch is for a photo area, our guide to wedding backdrop ideas for photos will help you choose what goes behind it. When you are happy with it, order the full amount of balloons and plan when you will build the rest.

Asked and answered

Can I make a balloon arch myself?

Yes. It takes patience, but the technique is straightforward. Build a sample first so you know how many balloons you need and how long it takes.

How far ahead can I build the arch?

It depends on the balloons and where you store them, so ask your supplier. Plan to build close to the day, and test how your balloons hold up in the room where they will be.

Do I need helium?

Not for an arch built on a frame or strip. Helium is usually used for floating balloons. If you are considering it, ask your venue and your supplier what applies.

What should I do with the balloons afterwards?

Ask your venue who clears them. Deflate and dispose of them carefully, and keep the frame if you want to reuse it.