Damp walls? What’s the solution?

Rising damp specialists since 2012.
Devices designed and manufactured by us in France.
Easy-to-install devices for drying out walls.
Free advice to find out whether a device is suitable for your walls.

Since 2012
10-year
warranty
Quick, easy installation, no professional needed
Schéma du traitement des remontées capillaires dans les murs

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Which device is right for your walls?

Compare our six models by technology, power supply and coverage diameter. ATE devices plug into the mains; ATG devices work without electricity.

Comparison of ATE and ATG wall-drying devices

ATGGeomagnetic · No electricity

The coverage diameter is not a surface area in m². The right choice also depends on the layout of the building and the source of the damp. Please check prices and availability in our shop.

Read the reviews,
choose with confidence.

“The only drawback is that it only becomes effective after a few months, but that is not a problem. […]”
Clienta número unoATE LC30 Light grey · Verified purchase
6 September 2026
Read the review on Leroy Merlin
A really effective device against damp. I installed an ATG 25 and I cannot believe the results! I recommend this company for its professionalism and reliability.
BATG 25
5 years ago
Read the review on Google
An [ATE] device was installed in my salon because of rising damp, and I am very pleased with the results. Mr Coignard himself explained very clearly how to install it myself. It is very easy.
Institut MontaubanATE
5 years ago
Read the review on Google
“I’m very satisfied with the product installed in my home; the result is what I expected! I recommend this product.”
Lee_aATE LC15 Black
29 July 2024
Read the review on Leroy Merlin
I recently ordered the ATE device and I am very happy with my purchase. Delivery was incredibly fast and the parcel arrived in perfect condition. The product is very good quality and exactly what I expected. I highly recommend ATE to anyone looking for a reliable solution. Thank you!
Jean-pierreCustomer review · Leroy Merlin · Translated review
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Efficient delivery. Above all, there was a small issue with the product and the after-sales service was excellent! I will be back in six months to report the results!
GuillaumeCustomer review · Leroy Merlin · Translated review
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Fast delivery. Perfect, everything is fine.
DelphineCustomer review · Leroy Merlin · Translated review
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I am happy with my purchase of the wall drying device. Delivery was extremely fast and the product arrived in perfect condition. The device works perfectly and meets all my expectations. The parcel includes a manual with all the information. It is easy to install. No complaints.
RaphaelCustomer review · Leroy Merlin · Translated review
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I bought this product for the basement of my main home. It is too early to say whether it is effective.
MaggieCustomer review · Leroy Merlin · Translated review
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Installation is quick. The product is French, which is why I decided to buy it, and it is good quality. I recommend it, especially at this price.
ColetteCustomer review · Leroy Merlin · Translated review
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A very warm welcome from the company. I ordered an ATE at a great price, with fast delivery and easy installation. Time will tell, but previous customer reviews make me very confident about the results.
Bruno JGoogle · Visited in April 2022
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William Coignard is a professional who is dedicated to his company. Help Humidité is a reputable business and it is a pleasure to work with them.
françois GrandjacquesGoogle · Visited in May 2022
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Help Humidité is a very interesting platform for damp treatments. I have used it. I love it and recommend it.
Nicolas TodoGoogle · Visited in April 2021
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Quick availability, a reliable company and helpful contacts. A well-designed product; I recommend it...
Julien BaltanasGoogle · Visited in May 2022
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simple, quick and, above all, a very effective ATE
denis mGoogle · Visited in May 2022
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Selected customer reviews published on Leroy Merlin and Google. Reviews are translated where necessary. Each account reflects its author’s experience; models and results may differ.

Video tutorials

Install it yourself in 10 minutes, no professional needed

Follow the step-by-step video and install your device yourself, with no building work.

Installing the ATE

Electromagnetic device, mains-powered

Installing the ATG

Geomagnetic device, no electricity

Wall dampness devices: ATE, ATE MAX and ATG for drying damp walls

Discover Help Humidité on video

In one minute, see how our devices treat damp walls and rising damp. The ATE LC15, ATE LC30 and ATE MAX electromagnetic models start working as soon as they are plugged in, while the geomagnetic ATG needs no electricity and no maintenance.

Designed and made in France, our devices are easy to install, with no building work, and protect your home for the long term.

Wall dampness devices at factory prices

Identify the source of damp first: rising damp, water ingress, a leak or condensation. Choosing between ATE LC15, ATE LC30, ATE MAX, ATE LC30 PULSE, ATG LC15 and ATG LC30 depends on the building layout, the required coverage diameter and the available power supply.

Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.

Turnkey solutions

Products imagined
and designed in France

Products tested by the Emitech and Nexio laboratories

Secure payment
in 3 or 4 installments

Electromagnetic wall drying device against wall dampness | Quick and easy installation

ATE LC15, ATE LC30, ATE MAX and ATE LC30 PULSE are electromagnetic devices intended to help dry walls affected by rising damp. Depending on the model, their coverage diameter is 15, 30 or 60 metres. Made in France and laboratory tested, they must be installed and kept connected in accordance with their manual.

Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.

Our company, the leading reference against dampness

Help Humidité is recognized as a trusted expert in the fight against dampness in homes. Featured on television, radio, and in the specialist press, our expertise helps inform the general public and provide reliable solutions to effectively treat moisture problems and preserve the value of properties.

Expert advice: dampness in homes

Discover Help Humidité wall drying devices for rising damp. The electromagnetic range includes ATE LC15, ATE LC30, ATE MAX and ATE LC30 PULSE, which require mains power. The geomagnetic ATG LC15 and ATG LC30 operate without electricity.

Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.

The Expert’s Advice

Identify the source of damp first: rising damp, water ingress, a leak or condensation. Choosing between ATE LC15, ATE LC30, ATE MAX, ATE LC30 PULSE, ATG LC15 and ATG LC30 depends on the building layout, the required coverage diameter and the available power supply.

Drying is gradual and depends on the materials, wall thickness and condition of the building. Water ingress, leaks and condensation require appropriate treatment. Read the installation manuals and contact us for help choosing a suitable model.

Frequently Asked Questions

Do you have any additional questions?

Contact us now.

Where do you install the “ATE” device?

The ATE wall-drying device must be installed directly at the bottom of a load-bearing wall, on a flat surface. For optimal operation, it is preferable that the wall is damp. It is important not to install the device on a lining wall.

What is the difference between ATE and ATG?

ATE is an electromagnetic device that runs on electricity. It is generally recommended as the first choice. ATG is a geomagnetic device, fully autonomous and requiring no electricity. It is particularly suitable for second homes or public buildings, where a permanent electrical connection is not always possible.

What is the difference between the ATE models (LC15, LC30, MAX, Pulse)?

“ATE LC15”: small areas (7.5 m radius).
“ATE LC30”: whole houses (15 m radius).
“ATE MAX”: large buildings (30 m radius), more powerful and suitable for large areas.
“ATE Pulse”: the same power as the LC30 with a modern design.

What is the difference between the ATG models (LC15, LC30)?

ATG LC15: coverage diameter of 15 m (7.5 m radius). ATG LC30: coverage diameter of 30 m (15 m radius). Both geomagnetic devices operate without electricity. Choose according to the building layout and the recommendations in the installation manual.

Why do you recommend the electric ATE device as a priority—an electric model?

We recommend the electric ATE device because it is faster and more powerful than a geomagnetic device. As soon as you plug it in, it starts working immediately, offering greater effectiveness to address your dampness problems.

Do I need to follow all the recommendations you provide?

It is indeed preferable to follow our recommendations to achieve the best results. The device does its job effectively, but it isn’t magic either. For example, it cannot stop water infiltration. You’ll get more optimal results by following our recommendations.

Do you offer an on-site assessment?

No, we do not carry out at-home assessments.
These visits are often indirectly included in the final quote by some companies, which leads to unnecessary extra costs for the customer.

Our devices, with a 10-year warranty, help treat capillary moisture effectively.
To advise you accurately, you simply need to send us a few photos of your walls. We can then quickly guide you to the most suitable model, at no extra cost.

Our company in the media