How to: waterproof fireworks in five easy steps
When it comes to firework displays, preparation is everything, particularly when it comes to waterproofing. Although most of our products are damp resistant, it’s always best to cover them with at least a plastic bag for bare minimum protection. However, this is not always sufficient. Read the following post and watch our video on how to effectively waterproof fireworks.
The one thing that is most susceptible to damp weather is the fuse itself as it’s prone to absorb moisture. A wet fuse can prevent the firework from lighting or only partially firing. So, the first step is to protect the lighting fuse. The best way to do this is to cover the fuse in a length of sellotape from top to bottom. Ensure that the area in which the fuse goes into the firework is also sealed.
Once the fuse is protected you can move on to waterproofing the firework itself. The best way to do this is to use cling film or shrink wrap/pallet wrap, preferably a transparent one so the fuse is still visible. When it comes to waterproofing fireworks, think of it like wrapping a birthday or Christmas present. The cling film or shrink wrap should cover every side of the firework so no areas are left exposed to any damp that could get in. This includes the base of the firework, particularity for when setting up on wet grounds. When conducting this step, ensure that the fuse is still visible under all the wrapped layers.
NOTE – This method of waterproofing is not as suitable for pen-lid whistle fireworks as the plastic whistle units will be stopped by the layer of wrap. You can use this method with them but you will have to remove the layer of waterproofing before lighting this type of firework.
The size of your firework determines the number of waterproofing layers. Bigger fireworks have larger bore tubes and therefore the power to puncture and burn through up to 2 to 3 layers while smaller fireworks can only shoot through one.
The covering should not hang loose from the firework and should cling to it so there is no air pocket or gap between the waterproof layer and the firework. This will prevent the “greenhouse effect” which can increase the chances of moisture build up. This is why wrapping the firework in a plastic bag alone is not fool-proof!
It might be a good idea to put a sticker next to where the fuse is so you can find it easily when lighting the firework in the dark.
By taking all these waterproofing measures, you can confidently set up your fireworks on even the most wet grounds! We recommend only using a portfire (comes with every fireworks) or blow torch to safely burn through the waterproofing layers. Matches, lighters and gas hob lighters are not recommended to light with.