Call us, message us on WhatsApp, or request your online quote — we reply in under 10 minutes during office hours. It depends on the linear metres of wall affected. We provide a fixed quote after a diagnostic visit, with no obligation. The treatment requires addressing the water source, not the internal symptom. If the roof is degraded, the entire waterproofing must be renewed with new asphaltic membrane or a liquid-applied polyurethane system. If the facade has structural cracks, they are sealed with elastic sealant and repainted with specific facade paint that covers micro-cracks. Only after guaranteeing external watertightness do we repair the interior wall.

Yes, specific paint system for damp walls: salt-blocking primer, breathable microporous paint that lets the wall breathe. This is damp rising from the ground through the walls due to the capillary action of porous materials. It manifests as a damp patch on the ground floor, up to a metre high from the ground, often with white efflorescence (salts that crystallise as the water evaporates). It's typical in old ground-floor properties, especially in areas with a high water table near the sea. There are four types of damp we commonly see on the Costa Blanca, each with a different cause, diagnosis, and treatment. Confusing them inevitably leads to ineffective treatments and wasted money. That's why we always start with a diagnostic technical visit before quoting anything. The difference between treating damp correctly or incorrectly changes the durability of the result between five years and six months.

Rising damp: stain rises from the ground, up to one metre high, white efflorescence. Penetrating damp: stain descends from the ceiling or high corners, coincides with rain. Torrevieja Orihuela Costa Guardamar Ciudad Quesada Pilar de la Horadada Almoradí Los Montesinos San Miguel de Salinas Callosa de Segura Santa Pola See all 22 zones The treatment is adequate ventilation combined with interior thermal insulation. Installation of bathroom and kitchen extractors with the correct flow rate, cross-ventilation of rooms. In severe cases of very cold walls, application of interior insulation with sprayed cork or sandwich panels. Without addressing the cause (vapour that cannot escape), any applied paint will darken again.

The price for plastering and rendering in Sant Cugat del Vallès typically ranges from €160 to €3400. The final figure depends on the property's condition, materials, and labour time. We always provide a fixed quote before starting. The most common mistake with damp is repainting the affected wall. It works for the first month, and then the damp reappears, worse than before. Now the new paint creates a barrier that traps water inside the wall. Damp is not cured by painting. It is cured by identifying the water source and stopping it at its entry point. Only then do we repair the wall with the appropriate technique and repaint it. Formal guarantee on the treatment. If the damp reappears in the same spot, we return.