I made a balloon arch with a pump, after few minutes they all popped! :(

I'm pretty new at doing balloon decorations, I've done around 3 o 4 arches so far. They all looked so pretty and lasted a long time. I used to inflate them myself by mouth and leave them over night in an air conditioned place and next day outdoors and they lasted for a long time.

So I decided to buy my first electric pump for my last project, I used black and white color. 12" inflated pretty large probably 11" each. First time that I didn't tie them individually but I inflated 2 and just tied them together.

This one I made the same day and as soon I was done I put it outside. I live in Miami so weather was suuuuper hot! And after a few minutes all black balloons where gone!! :( and only few whites stayed in place...

What did I do wrong? Anything for me to change? Or should I just blame the hot weather?

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Preventing balloons from popping
by: Margit

Hi,
I think it's safe to say that you can blame the hot weather ;-) From what you describe, you made a perfect balloon arch for using indoors. Decorating with balloons outdoors is always a bit tricky, especially in hot and humid weather.

Here are some tips for preventing balloons from popping:

Use only high quality latex balloons (e.g. from Qualatex).

First over-inflate your balloons, then deflate and inflate again, now to their proper size, using a balloon sizer.

For decorating outdoors, or in rooms that heat up, make sure to under-inflate your balloons (9 inches for 11 inch balloons, 10 inches for 12 inch balloons, etc.) so that the heat won't expand them to the point of popping.

Again for outdoors, use light colors rather than dark ones (as in your example, all black balloons popped, whereas some of the whites stayed in place).