English-Speaking Waterproofing in Lisbon

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Looking for English-speaking waterproofing in Lisbon?

Top businesses in Waterproofing

Reviewed by Lau, Community Manager · Last reviewed: September 2026

Covering Lisbon and nearby areas

  • Lisbon
  • Cascais
  • Estoril
  • Oeiras
  • Sintra

Latest reviews for waterproofing in Lisbon

Real, phone-verified reviews from the expat community.

10

Luiz

Lisbon, Aug 2026

I had already worked with David before, so I already knew his work and hired him again for one of my projects. He is remodeling all the electricity in the apartment from scratch, and I do the civil construction part while he installs all the electrical part. He also gives me several smart home solutions for this type of work, so it is a valuable help. Communication is very good, he is polite, and the price feels fair.

9

Laura

Sintra, Oct 2025

I hired Tomas to fix a leaking rooftop terrace. We couldn’t find the source, so we’re re-flooring and waterproofing the whole upstairs deck, enclosing part of it, and adding a retractable pergola. The project is still underway, but communication has been great, an engineer comes by to oversee, and the crew is here every day, responsive and really nice, so I feel like we’re in good hands, though I don’t want to jinx it. It’s a big job and a bit expensive, but so far so good.

8

Liebelt

Lisbon, Aug 2026

I hired Matt for water damage in my hallway, some repainting and redoing, and re-siliconing. In my case there was a lot of miscommunication in the process, but it was also my fault partially, as I did pressure Matt with time. The first written quote felt a lot higher than I expected, and when the work started it was his colleague who came, which I had not understood initially. That first time, I felt some things were missing from the plan we agreed on and the house was left dirty, so I was pretty upset, especially considering the cost. But I did complain right away, and Matt was polite and friendly, and he really did try to get everything sorted within short time and leave it the way we had agreed.

How much do waterproofing cost in Lisbon?

Real price ranges from the jobs our vetted waterproofing actually do. Updated July 2026

Balconies and terraces

How much does waterproofing a terrace cost in Lisbon?

Very common in Lisbon, where terrace leaks show up in the flat below. Priced per square metre including the finish.

Typical project
around €550
Per m²
€40 to €60 per m²

Basements

How much does basement waterproofing cost in Lisbon?

Quoted after survey. Among the most expensive waterproofing work because access and drainage both matter.

Quoted after survey
by method
Typical project
around €550

Bathrooms and wet rooms

How much does waterproofing a bathroom cost in Lisbon?

Done under the tiles during a renovation, and impossible to add afterwards without lifting them. Priced per square metre.

Per m²
€40 to €60 per m²
Typical project
around €550

Exterior walls

How much does exterior wall waterproofing cost in Lisbon?

Priced per square metre with access the main variable. Facade work may need council approval in the historic centre.

Per m²
€40 to €60 per m²
Quoted per project
by access

Flat roofs

How much does flat roof waterproofing cost in Lisbon?

Priced per square metre after inspection, and the most common source of leaks in Lisbon flats.

Typical project
around €550
Per m²
€40 to €60 per m²

Foundations

How much does foundation waterproofing cost in Lisbon?

Usually only viable during construction or major works. Quoted per project.

Quoted per project
after survey

Tiled roofs

How much does tiled roof waterproofing cost in Lisbon?

Usually repair and underlay rather than full membrane. Quoted after a look at the roof.

Typical project
around €550
Quoted per project
after inspection

Water tanks

How much does water tank waterproofing cost in Lisbon?

Specialist coatings certified for potable water, quoted per tank.

Quoted per tank
by size
Typical project
around €550

Damp and rising-damp treatment

How much does rising damp treatment cost in Lisbon?

Common in older ground-floor Lisbon flats. Quoted after diagnosis, because the cure depends on the cause.

Quoted after inspection
by cause
Typical project
around €550

Injection sealing

How much does injection sealing cost in Lisbon?

A specialist method for walls and basements, quoted per linear metre after inspection.

Quoted after inspection
by method
Typical project
around €550

Leak repair

How much does a leak repair cost in Lisbon?

Finding the leak is most of the job. Priced per visit plus the repair once located.

Typical project
around €550
Quoted after inspection
once located

Waterproof coating and membranes

How much does a waterproof membrane cost in Lisbon?

Priced per square metre by system. Ask what guarantee comes with it and who honours it.

Per m²
€40 to €60 per m²
Typical project
around €550

Frequently Asked Questions

What expats want to know before hiring waterproofing in Lisbon.

Are there English-speaking waterproofing in Lisbon?
Yes, and more do as the expat community grows. The hard part is knowing who is reliable before you book, so every one we list is reviewed by other expats who have actually used them.
What should I check before hiring waterproofing in Lisbon?
Read recent reviews, be clear about exactly what you need, and agree the scope and an estimate in writing before any work starts. For anything regulated, check they hold the right credentials for the job.
What is the most important thing to know before booking?
Be clear about what you want and get the price and scope agreed up front, so there are no surprises. Reading other expats' reviews is the quickest way to find someone who does the job well and communicates clearly.
What should I avoid when hiring waterproofing in Lisbon?
Avoid paying the full amount up front (a deposit can be fair), anyone who will not give a clear quote, and unusually cheap prices that get padded with extras later.
How do I explain what I need if my Portuguese is limited?
A photo, a short video or a written list does most of the talking, and the professionals we list are used to international clients. Booking an English-speaking one takes the stress out of it entirely.
How do you say waterproofing in Portuguese?
In Portuguese, waterproofing are usually called impermeabilizacoes. That is the word to search for or to ask a neighbour, though many professionals here are used to the English term too.
How do I find waterproofing I can trust in Lisbon?
Check the reviews and any credentials before you book. On Locallista the reviews are phone-verified and the ranking is based on real expat experience, not who paid the most.

Navigating the waterproofing landscape involves more than just selecting a service provider; it's about building a relationship based on trust and effective communication. By adhering to these essential dos and don’ts, you'll empower yourself to make informed choices, ensuring that your waterproofing needs are met with professionalism and care. Emphasizing clarity in communication and maintaining a clean work environment can transform your project experience, while being vigilant about transparency and thorough research can save you from future headaches. Embrace these guidelines to secure a lasting partnership that not only addresses your current challenges but also enriches your overall peace of mind.

Dos and Don’ts as an expat

Key dos and don’ts for selecting the ideal waterproofing service

Do’s
Do Prioritize Clear Communication Skills
Choose a waterproofing service provider who demonstrates clear and regular communication throughout the project. This ensures you are always updated on progress and any necessary adjustments, fostering trust and collaboration.
Do Consider Flexibility in Project Planning
Select a provider who is willing to adapt to changing circumstances and unexpected issues during the project. Their ability to maintain professionalism and flexibility is key to successfully navigating complex waterproofing challenges.
Do Assess the Cleanliness of Worksite Management
Look for a provider who prioritizes site cleanliness, as maintaining a clean work environment reflects their professionalism and respect for your space. This ensures a smoother project and minimizes disruption to your daily routine.
Do Evaluate Timeliness and Efficiency
Choose a service provider known for punctuality and timely completion of projects. Efficient service not only saves you time but also provides a valuable return on investment, justifying the costs associated with waterproofing.
Dont’s
Don't Skip Background Checks on Service Providers
Failing to research the background and reputation of waterproofing contractors can lead to hiring unqualified workers who may not deliver quality results. Always check reviews, references, and previous projects to ensure their capability in handling complex waterproofing tasks.
Don't Ignore Communication Skills
Choosing a contractor who does not communicate effectively can result in misunderstandings and unsatisfactory outcomes. It's crucial to ensure that your service provider keeps you informed and is receptive to your concerns throughout the project, facilitating a smoother workflow.
Don't Assume All Providers Maintain Clean Job Sites
Overlooking the cleanliness and organization of a contractor's job site could lead to additional mess and issues at the end of a project. Ensure that maintenance of a tidy work area is part of the agreement, as this reflects their professionalism and care for your space.
Don't Neglect to Discuss Pricing Transparency
Hiring a service provider without discussing the pricing structure upfront can lead to unexpected costs and financial surprises down the line. Always ask for a detailed breakdown of costs and potential additional charges to avoid confusion and ensure a fair deal.