Just put a small fire close by bbq or any other lit material beneath the nest.
How to kill wasp nest in roof.
Dont leave a wasp nest in your roof.
Wasp nests are made from a thin chewed wood pulp substance making it very flammable and therefore very dangerous in or around your home.
Leave any nest entrance open to allow foraging members of the colony to come back in and come in contact.
When the water has pressure and is soapy it will blast the nest.
Make sure you use gloves long sleeved clothes and a protective mask.
Step 1 spray an insecticide into the vent to kill any wasps that are currently in the vent.
Wear a breathing mask and follow all instructions on the package to prevent inhalation.
Perhaps the most effective way to get rid of a wasp nest is to use insecticide spray.
Non poisonous method to get rid of a wasps nest in a roof you can use a garbage bag inside a landing net and a long handled scraper to remove the nest from the roof where it is attached.
Finally one of the most powerful aerosols on the market which can be used in a roof void with care is the digrain wasp blaster this aerosol will blast a nest that is about 3 4 metres away.
They could hibernate in your loft causing you more problems the following year.
It comes in an aerosol can that.
At the end of the year the queen will produce young queens for the next year.
Another way of destroying the nest is to squirt dishwashing liquid into the end of your hose pipe and run the water until suds appear.
Using fire as a method to get rid of wasp nest is firstly dangerous and secondly ineffective.
To get rid of wasp s nest wear protective clothing approach the nest at night when the wasps are less active and thoroughly douse the nest in an approved pesticide spray insecticidal dust smoke or water.
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Place the bag over the nest knock the nest off with the scraper and seal the bag.
Using a baton physical force.
The spectracide wasp and hornet killer kills these stinging insects on contact.
Ideally blast the nest from underneath into the entrance hole but if this is not visible then soak the nest and leave the roof carefully.
Apply the wasp killer as directed standing as far away as is practical and be generous.
Here is a story about leaving a nest in a roof.
The other method is to smoke the nest.
Afterwards you should take measures to also prevent wasps from returning in the future.