The treatment requires intervening at the source of the water, not the internal symptom. If the roof is degraded, the entire waterproofing must be renewed with new asphalt felt 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 ensuring the exterior seal, we repair the internal wall. Rising damp, roof leaks, internal condensation, and efflorescence from saltpetre. Diagnosis before action. Chemical injection, exterior waterproofing, breathable coating, or ventilation depending on the diagnosis.

There are four types of damp we commonly see on the Costa Blanca, each with a distinct 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. This is damp that rises from the ground through the walls due to the capillary action of porous materials. It manifests as a damp stain on the ground floor up to a height of one metre from the floor, often with white efflorescence (salts that crystallise as the water evaporates). It is typical in old ground-floor properties, especially in areas with a high water table near the sea. This is damp formed when indoor air, laden with vapour, touches a cold surface. Typical in kitchens and bathrooms without adequate ventilation, also in rooms exposed to north-facing facades that get colder in winter. It manifests as water droplets on windows, cold room corners, black mould spots in cold wall areas.

No, we choose the product compatible with each material (gres, marble, microcement, parquet) after prior assessment. This is precisely what prevents scratching or dulling new surfaces. The treatment is a chemical barrier injection. We drill small holes at the base of the wall at regular intervals and inject a resin that penetrates the wall, forming a horizontal waterproofing barrier. This barrier prevents water from rising further by capillary action. Over this barrier, we can repair and repaint with a breathable paint system. We guarantee the treatment for 5 years. This is water entering from the exterior due to defects in the waterproofing of a flat roof, poorly sealed structural joints, or degraded exterior paint. It manifests as stains on the ceiling or the upper part of interior walls, often coinciding with rainy periods.

The price for plastering and rendering in La Vall d'Hebron typically ranges between €160 and €3400. The final figure depends on the property's condition, materials, and working time. We always provide a fixed quote before starting. The result is a house ready to move into or hand over to a tenant or buyer, with no dust reappearing after two days or residue on windows and fittings. We offer a free preliminary assessment to give you a fixed price based on the square metres and condition. A masonry job creates more mess than a simple paint change. All work comes with a 30-day guarantee. Call us, message us on WhatsApp, or request your quote online – we reply in under 10 minutes during business hours.