ZSO-DA BAUConstruction services

Waterproofing

Water is the most patient opponent: wherever it finds a gap, it will get in sooner or later. A damp wall, a salty plinth or a musty basement is not a cosmetic issue — it damages the structure, and re-plastering only paints over the symptom.

We eliminate the cause: damp-proof membranes on new builds, retrofit waterproofing on existing houses, liquid-applied and sheet systems on terraces, plinths and basements.

Plinth waterproofing with bituminous membrane and XPS boards

What the service includes

Damp-proofing

Bituminous sheet and liquid membranes on new foundations.

Basement waterproofing

Interior and exterior systems, also against pressing water.

Plinth waterproofing

Stopping splash water and salt damage properly.

Terraces and balconies

Liquid membranes under tiling, with correct falls.

Wet rooms

Tanking of bathrooms and showers before tiling.

Injection

Retrofit damp-proof courses by injection, without demolition.

How we work

A transparent process, step by step

01.

First contact

We get to know your ideas, needs and possibilities.

02.

Quotation

We provide a detailed, transparent offer for the project.

03.

Design & preparation

If needed, we help with design and permits.

04.

Construction

Precise workmanship with continuous updates.

05.

Handover

Turnkey handover, warranty and aftercare.

Related work

Frequently asked questions

Why is my wall damp?

Most often it is moisture rising from the ground (missing or aged damp-proofing), but it can also be splashing rainwater, a faulty gutter or a burst pipe. We clarify this first at the survey — without it, any intervention is guesswork.

Can an existing house be waterproofed?

Yes: with retrofit injection, external excavation or interior-side systems — we choose the technology for the situation, and we are honest if something is not worth it.

How long until the walls dry out?

After waterproofing, walls dry out over months depending on thickness — roughly a month per centimetre. Final plastering is best done after drying.

Is renovation plaster alone enough for a damp wall?

No — renovation plaster alone treats the symptom, and the problem returns in a few years. First the path of moisture must be cut off, then comes the plaster.

Request a quote for this work

Free on-site survey, itemised quote within 48 hours.

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