Damp proofing services in Porto
Select a service below or call +351 220 000 000 for same-week survey slots across the metro area.
Damp Proof Course (DPC) Injection Creams
Damp proof injection Porto properties rely on is not a surface paint job — it is a horizontal chemical barrier drilled into the mortar course at 100–150 mm above external ground level. We inject silane-based creams that diffuse through the capillary network and repel groundwater that would otherwise climb 1.0–1.5 m up your walls each winter.
View service details →Damp Proofing for Historic Granite & Stone Walls
Historic wall damp treatment Porto conservation officers expect starts with understanding that 19th-century granite rubble walls were built to breathe. Cement tanking or impermeable paints trap moisture and accelerate salt decay — the opposite of what UNESCO-adjacent Ribeira stock needs.
View service details →Basement Tanking & Waterproofing Slurries
Basement tanking Porto hillside homes need differs from flat-site UK basements: negative-side pressure from Douro valley water tables plus historic barrel-vault cellars means a single coat of paint fails within one wet season.
View service details →Condensation Control & Ventilation Systems
Condensation control Porto tenants complain about is often mislabelled rising damp. When relative humidity exceeds 70% for 6+ hours daily — common in unventilated Ribeira flats — mold appears on upper corners while the skirting stays dry.
View service details →Professional Damp Surveys & Diagnostics
A damp survey Porto buyers request before closing should answer one question: what is causing the moisture, and what will it cost to fix? We spend 90–150 minutes on site, not 20 minutes with a single-prong meter and a quote for injection regardless of diagnosis.
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