Wasp Nest in a Cavity Wall – How Professionals Treat Hidden Nests in Great Ness
After a wall nest has been treated, closing the entry point properly stops the same gap from becoming next year's problem.
The job is not finished at treatment
Treating the nest ends the immediate problem, but the opening is still there. In spring, a new queen looking for a sheltered place to start a nest can find the same gap attractive. Nests begin in early April depending on the weather, and a hole that has worked once is a good candidate to be used again.
Great Ness, a village in north-west Shropshire, is like anywhere else in this respect. Houses with cavity walls have a number of small openings, and closing the obvious ones is simple housekeeping that reduces the chance of a repeat.
Many people feel that once the nest is gone the matter is over, and in the short term it is. The point of sealing is to avoid doing the whole thing again next summer. A small amount of tidy work in autumn or winter, when no wasps are flying, is easier than dealing with a new colony in August.
Treat sealing as part of the same job rather than an optional extra. It costs little and takes a short time, and it spares you a repeat of the whole experience.
When to seal
The key is timing. Do not seal while there is any sign the nest is still active. If wasps are still entering the gap, closing it would trap those inside and send them looking for another way out.
Wait until the technician has said the nest is inactive and you have seen no traffic for several days. Warm weather is a good test, since wasps are most active when it is sunny. Once the opening has been quiet through a couple of bright days, you can arrange to close it.
If you are unsure, ask. The technician can advise on what to look for, and it costs nothing to wait a little longer.
Autumn and winter are in many ways the best seasons for the work. Wasps are inactive in the cold, there is no risk of stings, and tradespeople are often less busy. If your nest was treated late in the season, you might wait until the cold weather and then do all the repairs in one go.
What to look at
Walk round the house on a dry day and look for openings that wasps could use.
- crumbled or missing pointing in the brickwork
- air bricks and vents without a fine mesh
- gaps around pipes, cables and meter boxes where they pass through the wall
- gaps at the top of the wall where it meets the soffit or the fascia
- cracks around window and door frames
Be careful with ventilation. Air bricks and weep holes are there for a reason, and closing them completely may affect the building. Have a builder or competent tradesperson advise on a suitable approach for your home, such as mesh rather than solid filler.
Keep notes of what you find. A drawing of the house with each sealed gap marked makes it easy to check next spring whether anything has been disturbed or reopened. It also helps if you later sell the house or hand it to a landlord.
Doing it safely
Sealing should be done by someone competent, and not in a way that puts you at risk of a fall. Gaps at height need proper access equipment. Do not lean out of a window or work from an unstable ladder.
If you have the work done by a tradesperson, tell them about the nest and when it was treated. They will want to work during cooler parts of the day and check for any remaining activity before they start. No product is needed from us; this is ordinary building maintenance.
Think about what is used, too. Fine mesh over vents keeps wasps out while letting air through, and a good-quality mortar repair suits damaged pointing. Whatever the choice, the aim is a closed gap that suits the building, and the tradesperson will know what is suitable. Photographs taken before and after are useful for your records.
If you are not in a position to carry out any of this work, such as in a rented house, tell the landlord or agent what the technician found, and leave it to them to arrange. What matters is that the information gets to the person who can act on it, ideally well before the next spring.
What the treatment costs
Wasp Exterminator Shropshire charges a fixed £80 per nest, with one visit guaranteed and no call-out charge. A further nest on the same property is £40 each, and nothing is added for location or time of day. The business is open seven days a week with same-day service, and evening and weekend appointments are available.
Treatment is carried out by fully insured and qualified technicians, and it is safe and effective. Domestic and commercial customers are served on the same terms. At booking, you can ask whether the empty nest can be taken down.
Spring checks and booking
Put a reminder in the diary for early April. A quick look at the walls, eaves and any gap that has been sealed will show whether something new is starting. A queen visiting a gap, or a wasp or two inspecting a crack, is a sign to act before a colony builds.
Booking can be done on 07916 322 280 or through the form on the contact page. Urgent problems out of hours can go through the form as an emergency request. Great Ness and the surrounding villages are covered. If anyone at home is allergic to stings, tell us when you book so the visit can be prioritised.
If a wasp or two does appear at a repaired spot, do not assume the work failed. Watch for a day or two. A single wasp is often just investigating, but a steady stream means it is time to call.
Wasps on your property in Great Ness?
Fixed price £80 per nest, no call-out charge, same-day service available.