Longhorn beetle control Netherlands: Prevent Collapse of Your Roof Structure
Have you discovered large fly holes in roof beams and are looking for urgency longhorn beetle control netherlands? Then you have come to the right place at Ongediertebestrijding Janssen. This is because longhorn beetles are the most destructive wood-eaters in the Netherlands - they can weaken load-bearing beams so severely in just a few years that collapse becomes a risk. This is why Ongediertebestrijding Janssen offers urgent longhorn beetle control netherlands with structural assessment and deep treatment methods that eliminate all life stages.
Why longhorn beetles are so dangerous
Longhorn beetles are the heavyweights among wood-eaters. A longhorn beetle larva grows 20-30 millimetres long - four times larger than a woodworm larva. Moreover, it makes passages 6-10 millimetres wide through load-bearing beams. These larvae eat through wood for 4-10 years and can hollow out a beam for 70-80%. In addition, from the outside you often cannot see how serious it is - a beam appears solid but is completely eaten out on the inside. This combination of major damage and longevity makes professional longhorn beetle control netherlands LIVING.
Structural Hazard: This Can't Wait
Longhorn beetles are only found in softwood roof structures - the very beams that support your roof. A weakened roof beam can collapse under snow load or storm, resulting in collapse. Just last year: a customer where a roof beam broke during snowfall. That's why longhorn beetles require urgency - this is not a problem that can wait a few months. Every month's delay means more damage and higher risk of collapse.
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Why choose Our longhorn beetle control?
At longhorn beetle control netherlands specialist knowledge is crucial. This is why Janssen Pest Control stands out as a longhorn beetle specialist:
Express service within 48 hours
I am Johan and I understand that longhorn beetles are urgent. That's why, if longhorn beetles are suspected, I always visit within 48 hours. Because every day counts - the larvae eat on and the damage gets worse. Moreover, I can come during weekends and evening hours if the situation requires urgency. This quick response prevents a problem from escalating into a dangerous situation.
Structural Safety Assessment
I do not limit myself to abatement alone. I also assess whether your roof structure is still structurally safe. With an awl, I test the strength of each affected beam. I also measure the thickness of the remaining healthy wood. If in doubt, I immediately call in a structural engineer. Because safety always comes first - even if it means replacing beams.
Professional Deep Treatment
Longhorn beetle larvae are up to 5 centimetres deep in the wood - much deeper than woodworms. DIY remedies never reach that. We therefore use professional injection systems that inject agent 3-5 centimetres deep into beams. In addition, we use agents that remain effective for months. This guarantees that all larvae - including the deepest ones - are killed.
Cooperation with constructors and carpenters
In case of severe damage, I work with recognised structural engineers and experienced carpenters. They assess whether reinforcement or replacement is needed. Moreover, they arrange repair according to building regulations. This integrated approach ensures that your roof is safe and beetle-free again. You have only one point of contact - I coordinate everything.
More than 20 years of experience
I have been fighting longhorn beetles for more than 20 years. In that time, I have fought dozens of serious longhorn beetle infestations - from incipient infestations to entire roof structures that had to be renewed. This experience makes all the difference. Because I can immediately see how bad it is, what the risks are and what the best approach is. Moreover, I have experienced all the ups and downs and know which pitfalls to avoid.
Find out more about longhorn beetles and their devastating effect? Check out our knowledge base article for detailed information.
Our Approach: From longhorn beetle infestation to Safe Roof Construction
We take a structured approach to longhorn beetle control netherlands guaranteeing both combat and structural safety:
Step 1: Emergency Inspection and Risk Assessment
I will visit you within 48 hours for an urgent inspection of your entire roof structure. First, I examine all softwood beams, purlins, rafters and rafters. I look for large fly holes (6-10mm, the size of a pencil), lots of coarse borate (sign of active infestation) and assess the size. I also test each infested beam with an awl: I stab into the wood to feel how much healthy wood remains. This inspection takes 2-3 hours and gives complete picture of the severity.
Step 2: Structural Safety Report
After inspection, you will receive an urgent report: are there any immediate safety risks, which beams are critically weakened and need immediate action. In addition, you will receive a treatment plan: which beams can be treated, which need to be replaced, what are the costs and how long will it take. You also get a fixed price - no surprises. If in doubt, I engage a structural engineer for a second opinion.
Step 3: Professional Deep Injection Treatment
For beams that still have sufficient load-bearing capacity, we carry out an intensive treatment. We strategically drill holes in the beams and inject professional longhorn beetle pesticide up to 5 centimetres deep. These agents reach the larvae in their deepest passages. In addition, we spray all surfaces and cracks with residual insecticides. We also treat surrounding wood preventively. The agents remain effective for 6-12 months and kill both larvae and eggs.
Step 4: Replacement of Critically Weakened Bars
Beams eaten out for more than 50% must be replaced - this is non-negotiable due to safety concerns. We arrange this through our regular carpenter partners who specialise in roof structures. They replace the affected timber according to current building regulations. In addition, I immediately treat the new wood preventively. This coordinated approach ensures that your roof is completely safe again.
Step 5: Monitoring and Prevention
After 6-8 weeks, we come back for final inspection. We inspect whether all longhorn beetles have been eliminated and whether there is new activity. We also give extensive prevention advice: improve insulation (longhorn beetles love heat), optimise ventilation, repair cracks in wood and annual self-monitoring. You will also receive a final report with proof of successful control - important for any sale of your house.
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Frequently asked questions about longhorn beetle control Netherlands
Do you have questions about longhorn beetle control? Below are answers to the most frequently asked questions. Is your question not listed? Feel free to contact with us.
Pest knowledge base - ask Johan
