Bathroom Repair in Barcelona | Sanitary Plumbing, Joints and Siphons

Black, cracked or detached silicone in the shower or bathtub: It is the most visible sign and the one that filters the most water. Black mold (aspergillus niger) is not only unsightly, but it releases spores that can cause allergies and respiratory problems, especially in children and the elderly. If you see dark silicone, it is urgent to change it.

Constant bad smells rising from the drain: If the bathroom smells like a sewer intermittently, the siphon may be dry (because it is not used often) or, more frequently, there is a break that prevents the formation of the water plug. a siphon in poor condition is an open door to the gases from the sanitation network.

Shower water takes a long time to drain or creates small whirlpools: This is a symptom of hair, dirt or lime accumulated in the trap pot. If action is not taken, the water ends up pooling and filtering through the tile joints, damaging the plaster of the flat below.

The risks of not repairing it: A broken siphon or poor silicone seal filters water to the slab, damaging the steel or wooden joists and causing mold to appear on the neighbor's walls. The community insurance claim can be very costly if it is proven that the origin of the leak was in your bathroom and you didn't act in time.

We exclusively use 100% fungicidal acid silicone (Sika or Körapur brand) with lifetime anti-mold protection. Unlike neutral silicones, acid silicone has better adhesion to porous surfaces like stoneware or ceramics. For siphons, we use models from the Viega or Blum brand with an internal EPDM (ethylene-propylene rubber) gasket that resists cleaning chemicals and temperature changes without deteriorating. The drain gaskets we use are liquid Teflon, which fills the micro-roughness of the threads for total watertightness.

The bathrooms in the Eixample and Gràcia buildings often have solid brick or masonry walls, which absorb moisture like a sponge. When a silicone seal fails, the water not only falls to the flat below, but gets into the thickness of the wall, rising by capillarity and appearing a meter high in the form of saline efflorescence. At Plumber Express, before sealing, we always dry the surface with a hot air blower to remove residual moisture and ensure that the new silicone adheres to a completely dry support. This small technical step differentiates a repair that lasts 6 months from one that lasts over 5 years.

We went to an apartment on **Carrer Verdi in Gràcia** where the owner had a persistent damp smell in the hallway for years. The cause was not a visible water leak, but a shower trap pot that had a split rubber joint. Every time they showered, a small amount of water fell directly onto the slab without reaching the drainpipe, soaking the neighbor's ceiling. We replaced the trap pot with a new 1.5-liter capacity one, cleaned the inspection chamber and applied an joining silicone to the downpipe connection. The problem was solved in 1 hour and the client was able to paint the hallway wall without fear of mold returning.

Technicians with experience in bathrooms of all styles: We know how to work in modernist bathrooms with hydraulic tiles (which require extreme care not to damage them) and in contemporary bathrooms with plasterboard, where moisture is a constant threat.

1-year guarantee on sealants and joints: If the silicone detaches in the 12 months following the intervention, we will re-apply it at no additional cost.

Fast and clean service: We leave your bathroom spotless, with all drains shiny and free of material residues. We take care of removing the waste according to Barcelona municipal regulations.

We solve any plumbing problem in your bathroom, from a simple joint change to comprehensive drain repair. Request your no-obligation quote and enjoy a bathroom that smells clean and free of humidity.