Monitor timber structures with a moisture sensors

Ensure the longevity, safety, and sustainability of your building with Tector’s moisture detection system.

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Sophie radich school in Norway during construction
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a close up of a piece of wood with a Tector moisture detection sensor

How does moisture detection system for timber work?

Tector’s moisture detection system for timber works by using wireless sensors that send real-time data to a web-based application, giving you instant access to moisture levels without needing to physically check each location.

Designed to be discreet yet powerful, our sensors can be installed in hard-to-reach areas, ensuring precise monitoring and protection of your timber structures.

Quick and easy installation

Tector wood sensors are easy to install directly into timber, whether you're working with CLT flat roofs, walls, or timber frames.

In just a few minutes on-site, you'll have a long-term solution that provides precise moisture monitoring for up to 10 years.

No specialists are required, making it a practical choice for professionals in construction and engineering.

moisture sensor installation quick and easy
Data report for wood moisture, temperature and humidity by Tector ex woodsense

One and only moisture measurement device

    • Constant monitoring: Unlike manual methods, Tector’s sensors track moisture levels continuously, ensuring real-time data.
    • Automatic logging: All data is logged and accessible from anywhere via the app.
    • Long lifespan: Up to 10 years of use with no maintenance required.
    • Customisable alerts: Get precise alerts with no false alarms.
    • Reports: Download detailed moisture reports instantly, saving time on inspections.

Benefits of wood sensors

    1. Enhanced durability: By monitoring and addressing potential problems early, Tector significantly extends the life of timber structures and materials, ensuring higher quality and transparency in construction.
    2. Cost efficiency: Proactive maintenance with Tector helps avoid costly repairs and replacements. Typical damage can cost 100,000 EUR, with building owners often covering 25% despite insurance. Tector’s system helps prevent these unnecessary expenses.
    3. Risk mitigation: Real-time data and predictive analytics help mitigate risks associated with timber degradation and structural failures, reducing the risk of damages and mold, which are harmful to building users and expensive to manage.
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a close up of a wooden floor with a wooden slatted wall and Tector moisture detection sensor

Typical placement of

wood sensors

Get an expert consultation, and follow our guidelines to determin where to place and mount sensors, and at what density.

For CLT flat roofs, we recommend installing 1 sensor per 10 to 25 m², depending on the roof's risk level and the value of the interior.

The sensor is easily installed from below, with insulated pins measuring moisture in the top panel of the CLT.

Water ingress often affects this top panel, which can lead to rot and compromise the roof's structural integrity.

wood sensor on clt flat roof

Each prefabricated timber roof cassette requires 1 sensor to monitor moisture, especially during installation.

Built-in moisture can lead to mould growth, and even a small hole or unsealed area in the top membrane can damage the entire cassette.

Roofs with green or solar panels increase the risk of moisture-related problems and the cost of repairs.

person installing wood sensor on timber in factory

For prefabricated facades, one sensor is required every four elements in critical areas, such as top and bottom corners near the foundation.

Water ingress often occurs during construction from roof runoff or when membranes remain open. External factors like balconies or high-altitude pressure also contribute to moisture risks.

prefabricated timber frames in roof with wood sensors

For timber frame roofs, sensors should be placed in risk-prone areas such as around dormers, chimneys, and ridges.

They can detect poor ventilation, which can lead to excessive moisture build-up over time and result in mould growth.

Leakages or condensation around penetrations can also be caught early, preventing long-term damage to the structure.

karsneskolli roof with timber and wood sensors

Sensors should be placed in high-risk areas where moisture can enter, such as from the foundation or roof leaks.

Poorly sealed penetrations, like windows and ventilation, can lead to moisture build-up.

wood sensor installed on timber frame wall

On average, one sensor is needed for every 40 m², with placement varying based on the building’s risk profile.

Sensors are installed under windows or near the foundation, ensuring critical areas are covered.

During construction, walls are exposed to rain, and manual moisture checks can be time-consuming.

Moisture also enters through the foundation, roof leaks, or improperly sealed penetrations such as windows or ventilation points.

wood sensors in snow on a timber wall

One sensor is recommended every 50 m² during construction.


Slabs are particularly vulnerable to rain exposure, requiring careful monitoring to ensure moisture levels remain under control. Trapped moisture from in-situ concrete or improper closure during high moisture levels is a common issue.

wood sensor installed on a CLT slab
Marmormolen timber construction

Sustainable timber construction

      1. Tector's technology promotes environmentally responsible practices, aligning with global sustainability goals and regulatory requirements, and adds value for DGNB, LEED, Eco label and BREEAM certifications.
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Monitoring Moisture in the Faroe Islands’ First CLT Building

By using Tector's sensors, we eliminated the need for random sampling, as the sensors provided continuous, accurate data. This allowed us to streamline quality assurance and make informed decisions on-site.
Gudmund Nielsen
Project Manager
Read case

What’s the best moisture monitoring solution today?

Obviously, it’s us. Our solutions are incredibly accurate and have already saved our clients billions.
No one else comes close.