Damp & Moisture Mapping Lanzarote

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Damp Detection Lanzarote: Finding the Source Before It Gets Worse

Damp in a Lanzarote property is one of those problems that homeowners tend to put off addressing. A patch appears on a wall, someone paints over it, and then the patch comes back, usually larger and darker than before. By the time the underlying cause is identified, the moisture has often been working its way through walls, floors, or ceilings for months, causing structural damage that far exceeds the original problem.

Our damp detection and moisture mapping service uses thermal imaging cameras and professional Protimeter moisture meters to locate the exact source of the damp, measure how far it has spread, and distinguish between the different types of moisture problem that are common in Lanzarote properties. We can assess any property, from coastal apartments with condensation and rising damp to inland villas with roof waterproofing failures and penetrating damp.

Understanding Damp

Learn about damp walls: causes and solutions to understand what you're dealing with.

Why Damp Problems Are Common in Lanzarote Properties

Lanzarote's climate is generally dry and sunny, but this does not make its properties immune to damp. Several factors specific to the island make moisture problems very common across all property types.

Flat Roof Construction

The great majority of Lanzarote's properties are built with flat roofs. Traditional pitched roofs shed rain naturally but flat roofs concentrate and hold water. When flat roof waterproofing fails, which it does gradually over years, water works its way into the roof structure and eventually appears inside the property as damp patches on ceilings and upper walls. The source and the visible symptom are frequently in different parts of the building.

Coastal Salt Air

Properties within a few hundred metres of the coast are subject to constant exposure to fine salt particles carried on the Atlantic wind. Salt accelerates the deterioration of exterior renders, sealants around windows and doors, and the waterproof membranes on flat roofs. Once the outer waterproofing layer is compromised, penetrating damp can develop quickly, particularly during the winter months.

Seasonal Occupancy and Poor Ventilation

Many Lanzarote properties are holiday homes or investment properties that sit empty for extended periods. Properties with poor ventilation that are closed up for weeks or months develop condensation damp inside, particularly in bathrooms, kitchens, and any room with inadequate airflow. The combination of warm air, cool walls, and zero ventilation creates ideal conditions for mould and surface damp.

Older Construction Methods

Properties built in Lanzarote during the 1970s, 1980s, and 1990s used construction methods and materials that have limited moisture resistance over the long term. Older renders crack, original window seals deteriorate, and damp-proof courses were not always installed to current standards.

The Three Types of Damp We Identify

Rising Damp

Rising damp occurs when moisture from the ground migrates upward through walls via capillary action. It is most common in older properties built without an adequate damp-proof course and in properties where the external ground level has been raised above the damp-proof course during paving or landscaping work. Rising damp is characterised by a tide mark on the lower section of walls, usually between 300mm and 1,200mm from floor level, with visible salt deposits and deteriorating plasterwork.

Penetrating Damp

Penetrating damp enters a property from outside through cracks in render, failed sealants around windows, waterproofing failures on flat roofs, or damaged tile and grouting on exposed terraces. Unlike rising damp, penetrating damp can appear at any height in a building, and its location inside the property is often well away from the actual entry point because water tracks along structural elements before emerging at the surface.

Thermal imaging for leak detection is most valuable for this type of problem. A thermal camera identifies the cool, wet area inside the wall where water is present, and our technician traces the moisture path back toward its entry point without opening walls unnecessarily.

Condensation Damp

Condensation forms when warm, humid air meets a surface cooler than the dew point temperature of the air. In Lanzarote, this happens most frequently in properties that are poorly ventilated, particularly during the cooler months. Condensation appears first on windows, then on exterior-facing walls, and eventually on ceilings if the problem is severe.

Our environmental monitoring equipment measures air humidity, temperature, and dew point at multiple points to build a picture of whether conditions are conducive to condensation. This distinguishes definitively between condensation damp and a penetrating or rising water source.

Our Detection Technology

Thermal Imaging Cameras

Our thermal imaging cameras detect minute temperature differences caused by moisture inside walls, ceilings, and floors. Damp areas are cooler than dry ones because water conducts heat away from surfaces faster than dry building materials. Even small amounts of moisture produce a clear thermal signature that is invisible to the naked eye but obvious on the thermal display.

Thermal imaging allows us to map the full extent of a damp problem, including areas that have not yet developed visible symptoms. It also reveals the direction moisture is travelling within a wall, which helps us identify the source rather than just the visible symptom.

Protimeter Moisture Meters

Protimeter instruments are the professional standard for moisture measurement in building surveys. They measure moisture content in building materials at depth, up to approximately 75mm below the surface, giving accurate readings that allow us to build a precise moisture profile of affected areas.

We use moisture meters alongside thermal imaging to confirm and quantify what the thermal camera shows. A thermal camera identifies where moisture may be present. The moisture meter confirms the reading and gives a numerical measure of severity.

Environmental Monitoring

Our environmental monitoring instruments measure relative humidity, temperature, and dew point at multiple points in a room. This data tells us whether conditions favour condensation and whether the damp readings we find are consistent with a condensation source or an ingress source from outside.

When to Book a Damp Survey

A professional damp detection survey is particularly valuable in several specific situations.

Before decorating or refurbishing a room with existing damp patches, a survey identifies the source and extent of the moisture. Painting or plastering over unresolved damp always fails. The damp returns through new plasterwork and decoration, sometimes within months.

Before purchasing a property in Lanzarote, a damp survey gives you an accurate picture of any moisture problems and their severity, valuable in negotiating the purchase price and in planning any remedial work.

When mould is recurring on walls or ceilings despite repeated cleaning and painting, a damp survey establishes whether the cause is condensation, penetrating damp, or a hidden water pipe leak.

What the Survey Includes

Our damp detection survey produces a full written report for every property. The report maps affected areas with thermal photographs showing the moisture distribution, records moisture meter readings at multiple points with the severity classification for each, documents environmental readings and their significance, identifies the probable cause of each damp area found, and provides recommendations for remedial work in priority order.

This report is suitable for insurance claims, pre-purchase negotiations, and briefing contractors on exactly where and how to carry out repairs.

Frequently Asked Questions: Damp Detection Lanzarote

How do I know if my wall is damp from a pipe leak or from external moisture?

The location, pattern, and seasonal behaviour of the damp are all clues. Damp from a pipe leak often appears in a relatively small area that does not change significantly with rainfall or seasons. External moisture ingress tends to be worse after rain and may span a wider area consistent with a roof or wall seam. A thermal imaging survey resolves this in most cases.

Can you detect damp behind tiled walls?

Yes. Thermal imaging detects temperature changes regardless of surface materials. Wet substrate behind tiles creates a cooler zone that the camera picks up clearly. This is particularly relevant in bathrooms and pool surrounds where tile adhesive failure and grout deterioration are common causes of hidden damp.

Do I need to prepare anything before you arrive?

No special preparation is needed. For the best thermal imaging results, it helps if the property has been closed up for a few hours before the survey, as this allows temperature differences between wet and dry areas to develop more clearly.

What does a damp survey cost?

We offer a completely free initial home visit and assessment. Following this, if a full moisture mapping survey is needed, we provide a clear, fixed price before any work begins. Contact us to arrange your free visit.

Can you identify mould risk before it appears?

Yes. Our environmental monitoring identifies conditions that will lead to condensation damp and mould growth if not addressed. We can advise on ventilation improvements, dehumidification, or insulation changes that eliminate the conditions before mould becomes established.

What's Included

FAQ

What's the difference between damp mapping and leak detection?

Is the damp survey really free?

Can thermal imaging see through walls?