Rising damp, roof leaks, internal condensation, and saltpetre efflorescence. Diagnosis before action. Chemical injection, external waterproofing, breathable coating, or ventilation depending on the diagnosis. The treatment requires addressing the water source, not the internal symptom. If the roof is damaged, the entire waterproofing needs to be renewed with new roofing felt or a sprayed liquid 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 internal wall.

Formal guarantee on the treatment. If the damp reappears in the same spot, we'll return. This is damp that rises from the ground through 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 homes, 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.

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The price for flooring in Sentmenat typically ranges between €156 and €3750 as a guide. The final amount depends on the property's condition, materials, and work time, and we always finalise it after seeing photos or —if you prefer— a site visit, with no obligation. In the area, the market average is around €550 for similar jobs; we are usually below that when the property's condition allows. It depends on the linear meters of affected wall. We provide a fixed quote after a diagnostic visit, with no obligation. Call us, message us on WhatsApp, or request your quote online — we'll respond in under 10 minutes during business hours.