Warm, sheltered and undisturbed, the insulation in your home makes the perfect nesting spot for pests such as mice, rats, and wasps – none of which you'd particularly want in your loft.
Not only can these pesky creatures cause damage to your insulation, decreasing its effectiveness, but they may also leave droppings and urine behind, which can pose a serious health risk.
To find out the best ways to prevent them from settling in your insulation – and how these tiny creatures get there to begin with – I spoke with three pest control experts to hear their advice.
Article continues belowHow do you stop pests in insulation?
1. Block the entry points
The best way to stop pests from nesting in your insulation is by blocking off access points. To do so, Daniel Steward, Managing Director at Shield Pest Control, recommends inspecting for gaps around fascia and soffit boards, vents, pipe entry points and cable holes – all of which are common routes into insulated areas.
"Any damage to roofing materials should be repaired promptly and vents can be covered with fine mesh to prevent entry while still allowing airflow," he adds.
2. Moisture control
As well as blocking entry points, Daniel also advises keeping moisture levels low in your home by fixing leaks promptly, reducing condensation, and maintaining good ventilation – a damp loft is a golden opportunity in the eyes of a pest.
You can solve most of these problems by ensuring your home is fitted with extractor fans in wet rooms and investing in one of the best dehumidifiers (though this won't be suitable for use inside an unconverted loft). You can check your home's humidity levels using a hygrometer.
This dehumidifier will help reduce damp, mould, and condensation in your home, and it also doubles as a medical-grade HEPA air purifier.
This three-pack of hygrometers will help you keep your home's humidity levels in check.
3. Keep your loft space tidy
By keeping your loft space clean, tidy, and free from clutter, you'll reduce the chances of rodents (such as mice) settling in, as they will have fewer sheltered spots to choose from, explains Daniel.
4. Remove food sources
One of the fastest ways to attract pests into your home is by leaving out potential food sources. Things like leaving wood waste outside your property and using loose lids on your bins are big no-nos and are likely to attract a long list of unwanted creatures.
The same applies to your garden, too. You should avoid leaving bird seed too close to your property or having overhanging branches close to your roofline, warns Daniel.
5. Watch for early signs
Watch out for warning signs such as scratching and scurrying noises, droppings, chewed wiring and nesting material, all of which could point to an infestation in your insulation. The sooner you find out and can take action, the better.
"If pests have already entered the insulation, acting quickly is important, as contaminated insulation may need to be professionally removed and replaced to fully resolve the issue and prevent further spread within the property," says Daniel.
"In these cases, it’s always advisable to contact a professional pest control company and we can assess the situation, safely remove the infestation and recommend proofing measures to help prevent further damage to the home."
With 24 years of experience in the pest control industry, Daniel has developed a deep understanding of the various diagnostic methods and techniques used to eliminate pests from homes and businesses.
What causes pests in insulation?
We now know how to prevent pests in our insulation, but what actually causes them?
"Pests are attracted to any place that provides shelter and a food source, and will climb pipes, wiring, trees etc. to find an entry point – particularly in insulated lofts," says Darren Backhouse, Partner at MJ Backhouse Pest Control.
"We’ve seen this happen before through roof damage or gaps in a property exterior that let mice, rats or even squirrels in. We’ve also dealt with rats in cavity walls where they used the insulation for nesting."
Tony King, pest control expert at The Pied Piper, adds that the quiet, dark and undisturbed nature of a loft makes it the perfect place for pests to breed and raise their young. Homes with small entry points near the roofline, vents, or soffits offer easy access.
Darren is the partner of a family-run pest control company based in Yorkshire, which has been operating since 1988. He has vast experience working on both domestic and commercial property and has seen just about every pest control issue there is over the years.
Tony King is the owner and manager of The Pied Piper, a leading pest control service that has been in operation for more than 25 years. His team of professionals can help eliminate everything from mouse infestations to slug intrusions.
What are the signs of pests in insulation?
According to Daniel Steward, these are the the main signs of a pest infestation such as squirrels in the attic:
- You can hear scratching or scurrying noises
- You can see droppings and urine
- You notice chewed wiring and nesting material
To recap, the easiest way to prevent pests in your insulation is by blocking the access points and making it as unhabitable as possible.
For more pest control advice, read our guide on how to deter wasps and how to get rid of rats in your home.
