Por Aurelio Tamarit Blay – Perito Judicial de la Construcción

Hoy quiero compartir contigo un caso real de peritaje de la construcción que me tocó resolver hace unos meses. Es uno de esos casos que parecen pequeños al principio, pero que esconden problemas estructurales graves y afectan profundamente la calidad de vida de las familias implicadas.

Se trata de una vivienda unifamiliar adosada en Benidorm (Alicante), donde el propietario comenzó a notar manchas de humedad persistentes en el techo del salón y en parte de la pared del dormitorio principal. Al principio pensó que era condensación… hasta que empezó a llover.

🌧️ El problema apareció con las primeras lluvias

Tras unas intensas jornadas de lluvia, el agua comenzó a gotear directamente del techo. No era una simple mancha: era una filtración activa. El propietario contrató a un fontanero, luego a un pintor, y después a un tejador. Nada funcionó. Cada vez que llovía, la humedad volvía.

Me llamaron cuando ya habían gastado más de 3.000 € en arreglos temporales sin solución definitiva.

🔍 Mi inspección in situ: lo que vi no me gustó nada

Al llegar, lo primero que hice fue revisar el tejado, la cubierta, las canalones… todo aparentemente bien. Pero algo me llamó la atención: la humedad no seguía el patrón típico de filtración desde arriba. Estaba descentrada, lateral, y afectaba también a la pared vertical.

Entonces pedí acceder al vecino de al lado.

👉 Lo que encontré fue impactante:

• Una pared medianera construida con doble hoja de ladrillo hueco, sin cámara de aire ni impermeabilización.
• En la parte superior, faltaban remates de coronación y el mortero estaba agrietado.
• Durante la lluvia, el agua entraba entre las dos hojas de ladrillo, recorría internamente la pared como un conducto, y al llegar al forjado inferior, se extendía lateralmente, filtrándose hacia abajo.

En resumen: el agua no caía del cielo… viajaba en horizontal dentro de la pared.

✅ Conclusión técnica:
La humedad no provenía del tejado ni de la cubierta, sino de una deficiencia constructiva grave en la medianera, agravada por la falta de mantenimiento y sellado adecuado.

📸 Pruebas realizadas

Para respaldar mi diagnóstico, realicé:

• Termografía infrarroja: detecté zonas frías en la pared, indicativas de humedad interna.
• Mediciones con higrómetro: niveles superiores al 25% de humedad en el yeso y forjado.
• Inspección visual con endoscopio: confirmé la presencia de agua estancada en el interior de la pared.

🛠️ Solución propuesta

No se trataba de tapar goteras. Había que atacar el origen. Mi informe recomendó:

1. Sellado integral de la coronación de la medianera con mortero hidrófugo y junta elástica.
2. Inyección de resina impermeabilizante en la cámara de aire de la pared.
3. Reparación del forjado afectado y cambio de falsos techos dañados.
4. Instalación de ventilación pasiva en la parte alta de la pared para evitar acumulación de vapor.

💬 ¿Qué ocurrió después?

El informe fue entregado al propietario y al ayuntamiento. Tras una mediación vecinal, ambos vecinos asumieron el coste al 50%, ya que la pared era compartida. Se ejecutaron las obras y, tras un año de seguimiento, no ha vuelto a aparecer ninguna gotera.

🧩 Lecciones aprendidas

Este caso me enseñó (una vez más) que:

• Las humedades nunca hay que subestimarlas.
• Muchas veces, el problema no está donde parece estar.
• Un buen peritaje técnico puede ahorrar miles de euros en arreglos innecesarios.
• Y sobre todo: una pared mal hecha puede arruinar dos casas.

📝 ¿Quieres saber si tienes un problema similar?

Si notas:

• Manchas oscuras en techos o paredes altas
• Goteras que solo aparecen tras lluvias prolongadas
• Moho persistente aunque ventiles
• Paredes frías al tacto

👉 No esperes. Podría ser una filtración oculta como esta.

Un peritaje temprano puede salvarte de grandes disgustos.

¿Te ha resultado útil este caso? Déjame tu comentario o compártelo si conoces a alguien que esté pasando por algo parecido.

Un saludo,
Aurelio Tamarit Blay
Perito Judicial de la Construcción

Investing in real estate can be an effective strategy to improve your quality of life over the long term, but it also carries risks and requires careful planning. Here are some tips to consider when investing in real estate to improve your quality of life:

1. Set your financial goalsBefore investing, clearly define your short-, medium- and long-term financial goals: Are you looking for passive income, long-term financial security or portfolio diversification?
2. Budget appropriatelyMake sure you have a solid budget that will allow you to pay the down payment, closing costs and the ongoing costs of maintaining and operating the property.
3. Research the marketIt carries out an exhaustive analysis of the real estate market in the area in which you are considering investing. This includes studying price trends, demand and supply of properties.
4. Diversify your investmentDon't put all your resources into one property. Diversification can help you reduce risk and maximise return potential.
5. Assess your risk toleranceUnderstand how much risk you are willing to take and choose the right ones. investments real estate that aligns with your risk profile.
6. Learn about financing optionsResearch the different financing options available and choose the one that best suits your needs and resources.
7. Maintenance and proper managementMake sure you keep the property in good condition and consider hiring a property manager if you don't have the time to manage it yourself.
8. Long-term investment: The real estate investments are usually long-term. Don't expect immediate results and be prepared to maintain your investment for several years.
9. Tax plan: Understand the tax implications of your real estate investments and seeks to take advantage of the tax benefits available.
10. Professional adviceConsider working with professionals, such as real estate agents, lawyers, accountants and financial advisors, to make informed decisions and avoid costly mistakes.
11. Diversify your investmentsIn addition to investing in real estate, consider other forms of investment, such as stocks, bonds or other asset classes, to achieve a diversified portfolio.
12. Plan your departureBefore you invest, think about your exit strategy... Not all real estate investments are the same, so it's important to it is important to adapt your strategy to your objectives personal and financial. It is also essential to keep up to date with market trends and adjust your strategy as necessary over time.
    

As a building surveyor, I would like to speak to you from the closeness and commitment I feel towards all the citizens affected by the DANA in our beloved Valencian Community. As a surveyor, I know that this phenomenon has hit many homes, businesses and communities hard. Let me explain how I can help you in this delicate moment.

1. Comprehensive Damage Assessment

My work begins with a **detailed inspection of the damage** your property may have suffered. This first step is essential to understand the true extent of the damage. I identify:

- Structural damage such as cracksThe building must be protected from damage, displacements or weakened foundations that could compromise the safety of the building.
- Problems in electrical installations, plumbing, and air conditioning systems that may have been affected by flooding or damp.
- Leaks and dampness, which are common after such events, require careful inspection to avoid problems with mould and damage to ceilings, walls and floors.

This assessment not only helps to identify superficial damage, but also damage that, if not identified in time, could worsen and increase repair costs.

2. Economic Appraisal of Repairs

After inspecting the damage, the next step is to draw up a **complete technical report** in which I calculate the cost of repairs and materials needed to bring your property back to optimum condition. This report will give you a clear and accurate figure that will allow you to plan the reconstruction. I include all the necessary details, such as:

- Labour and materials.
- Additional costs if structural reinforcement is required.
- Recommendations for improvements to prevent such a thing from happening again in the future.

I know what important It is for each of you to have an accurate and transparent assessment that will enable you to deal with this situation with a realistic plan.

3. Advice on Procedures with Insurers

If they have insurance to cover this damage, the report will expert that I give you can serve as a basis for your **insurance claim**. I will see to it that the report contains all documentation detailed, with photographs and valuations necessary to support your claim.

In addition, I can advise and accompany them through this process, as I know that for many it can be complicated and confusing. I can help you understand how to file your claim effectively and, if necessary, I can work with the insurer to ensure that you are awarded fair compensation.

4. Supervision of Repair Works

Another service I can is that of **supervision of the repair work**. My presence during the reconstruction phase gives you the peace of mind of knowing that everything is being done correctly and with the right materials. During this phase:

- I supervise that the techniques and materials used meet quality standards.
- I regularly monitor the progress of the work.
- I verify that the works respect the agreed time and costs, ensuring that the project is in line with what is necessary and foreseen.

My aim is to ensure that, on completion, the property is not only as it was before, but better protected against similar events in the future.

5. Advice on Prevention of Future Damage

Finally, I provide **advice on preventive measures**. I have learned that, if we take certain precautions now, we can minimise the risks to our health. damage in the event of future DANAs. I can advise you on measures such as:

- Waterproofing of façades, roofs and terraces.
- Reinforcement of structures that may be at risk.
- Installation of improved drainage and sewage systems.
- Choice of materials resistant to humidity and climatic changes.

These recommendations are not just technical; they are practical steps to make you feel safer and more secure in your own home, whatever happens.

-

my commitment as a expert is to be here for you at every stage of recovery. From the first damage assessment to the implementation of preventive improvements, my aim is to accompany you and offer you the assurance that you are not alone. Having an expert means having professional support when you need it most. Together, we can get your homes and businesses back on their feet and make them safe and welcoming again.

Article title SEO:
👉 Real Life Testimony: How a Building Surveyor Resolved a Building Defects, Dampness and Leakage Case

Meta description (SEO):
Discover the real testimony of how a judicial construction expert helped to resolve a case of construction defects, damp and leaks. A practical case with real results and how a favourable judicial resolution was achieved.

🏗️ Testimony: "Without your expert report we would not have won this case".

Like judicial construction expertOne of the most illustrative cases I have handled in recent years was that of a property located in the province of Alicante. It involved a neighbourhood complaint against a developer for serious defects in the execution of the workmainly related to rising damp, leaks in façades and minor structural problems due to poor foundations..

This is the testimony of Mr. Juan M.representative of the community of owners concerned:

"When we contacted [Aurelio Tamarit Blay], we had many doubts about whether we could really claim in court. There was damp on several floors, the walls were peeling, the ground floor had saline efflorescence and, worst of all, we didn't know if it was the builder's fault or if it was due to poor maintenance. Thanks to the report expert detailed, technical and substantiated, we were able to demonstrate in court that the defects were a direct consequence of non-compliance with the building regulations in force".

Technical Diagnostics: What did we find?

Work as a judicial construction expert began with a thorough on-site inspection, accompanied by non-destructive testing and material analysis. The main findings were as follows:

1. Rising damp in load-bearing walls due to the absence or breakage of the capillary barrier.
2. Leaks in the main façade caused by poorly executed glazing beads and expired sealants.
3. Deficient rainwater drainage systemcausing water accumulation on the upper terrace.
4. Structural microcracks in mezzanine floors, attributed to incorrect load distribution during the design phase.
5. Persistent condensation in common areas, resulting from inadequate ventilation and lack of thermal insulation.

📋 The Expert Report: Key to Winning a Case

The expert report drafted included:

• Descriptive report of the current state of the building.
• Technical diagnosis of each pathology detected.
• Technical responsibilities assigned in accordance with current regulations.
• Repair estimate adjusted to market prices.
• Legal conclusion based on the Civil Code, Building Code and contractual liability.

Thanks to this documentation, the judge issued a judgement in favour of the owners' association, obliging the developer to to bear the costs of repair and to compensate for moral and material damage.

💬 Final thought: The importance of a good expert's report

This case demonstrates that, as judicial construction expertIt is not only a question of making technical diagnoses, but also of turn them into solid legal arguments that they can defend themselves in court.

A good expert report should be:

• Clarifier
• Precise
• Based on current regulations
• Accompanied by photographs, plans and annexes.
• Written in understandable but technical language

✅ Results obtained:

• Favourable ruling to the owners.
• Full repair of damage assumed by the promoter.
• Compensation for damages valued at more than €85,000.
• Increased confidence community in their rights as consumers.

📌 Conclusion: Your house has the right to be well built.

This testimony is not unique. Homeowners are often unaware of their rights when they buy a new or renovated home. However, there are legal guarantees that cover the quality of the construction, and a good court expert can make the difference between losing or winning a case.

If you believe that your home has construction defects, damp, leaks or other technical problems, do not hesitate to contact a chartered legal expert. Not only will they help you understand what is going on, but they will also be your best ally in any legal claim.

Have you had a similar experience, would you like to share your case or receive a free initial analysis? Write to me via the contact form and I will be happy to help you.

🔎 SEO keywords for this article:

• Judicial construction expert
• Construction defects
• Dampness and leaks
• Expert report on housing
• Judicial expert testimony
• Claim for building defects
• How to report bad construction
• Construction liability
• Case resolved Judicial expert
• Building surveyor dampness