MARISEAL liquid waterproofing application on flat roof by Aquazid team

Water leaking through your terrace or roof? We put an end to it — for good.

Professional Liquid Waterproofing

The continuous membrane that doesn't crack, doesn't peel, and doesn't let water through. No joints, no weak points — with a written warranty of up to 15 years.

Our Services Request a Quote

Watertight Seal

10–15

Years Warranty

Elongation at Break

Discover

Aquazid team applying polyurethane liquid waterproofing on a roof

10–15 Years Warranty

Why Choose Aquazid

Because leaks don't fix themselves — and cheap solutions cost more in the long run.

We know what it means to have a terrace that leaks with every rain or a roof that causes headaches year after year. That's why we work exclusively with MARISEAL — a liquid waterproofing system manufactured by Saint-Gobain, the global leader in building materials.

The result: a continuous membrane, without joints or seams, that perfectly conforms to any surface — roofs, terraces, balconies, foundations or floors. Works excellently even on terraces with de-icing or underfloor heating systems, with no risk of condensation.

Cold application

No open flame

European certification

UV resistance

Experienced team

Extended warranty

What We Can Do For You

Whether you have active leaks or want to prevent problems — we have the right solution

Is Your Roof Leaking?

We apply a continuous membrane that perfectly adapts to flat and pitched roofs, eliminating the weak points where traditional membranes fail — without needing to demolish the old waterproofing.

Does Your Terrace Have Leaks?

We create a continuous protective layer that withstands weather, foot traffic and freeze-thaw cycles. Also available with a decorative finish for an outstanding aesthetic appearance.

Is Your Balcony Leaking Inside?

We completely seal the balcony — including the critical wall and floor junctions, where most waterproofing systems fail. UV and wear-resistant finish.

Moisture in Your Basement or Foundation?

Protection of underground structures against groundwater and moisture. Solutions for retaining walls, basements and buried structures using specialized MARISEAL 600/670 products.

Industrial Floors

Protection and waterproofing systems for industrial floors, parking areas and high-traffic zones. Superior chemical and mechanical resistance.

Don't Know Where to Start?

We come to your site for free, assess the situation and recommend the optimal solution. No obligations, no hidden costs — just an honest diagnosis and a clear quote.

What Materials We Use

We use exclusively MARISEAL products — the liquid waterproofing system chosen by professionals in over 50 countries

Why the Material Matters

MARISEAL System is a complete liquid waterproofing system based on pure elastomeric polyurethane resins. Applied in liquid form, it cures through reaction with atmospheric moisture, forming a seamless, joint-free continuous membrane.

Maris Polymers, founded in 1989 and part of the Saint-Gobain group since 2017, is a European leader in polyurethane membrane production, with presence in over 50 countries. Distributed in Romania by TEMAD Distribuție — our trusted partner for the entire range of MARISEAL products.

Complete range of MARISEAL polyurethane liquid waterproofing products

Main Products We Use

MARISEAL 710

Solvent-based polyurethane primer. Ensures optimal membrane adhesion to the substrate — essential for system durability.

Primer

MARISEAL Detail

Fiber-reinforced liquid membrane for complex details: corners, junctions, cracks and joints. Superior mechanical resistance.

Details & junctions

MARISEAL 250

Premium single-component waterproofing membrane, based on aromatic polyurethane. 800% elongation at break, resistance from -40°C to +90°C. Vapor permeable — lets surfaces breathe, preventing condensation. Ideal for terraces with de-icing or underfloor heating.

Main membrane

MARISEAL 400

Aliphatic protective top-coat, UV-resistant and color-stable. Matte or gloss finish for surfaces exposed to sunlight.

UV Top-coat

MARISEAL 420

Aliphatic top-coat for heavy traffic — car parks, ramps, walkable terraces. Abrasion and chemical resistance.

Heavy Duty

MARITRANS MD

Transparent liquid membrane for applications where protection is needed without altering the aesthetic appearance of the substrate.

Transparent

Other Products in the Range

MARISEAL 260

Specialized membrane for waterproofing under ceramic tiles. Ideal for terraces and foundations.

Under tiles

MARISEAL 300

Two-component, solvent-free membrane, certified for contact with drinking water.

Drinking water

MARISEAL 600 / 670

Bituminous polyurethane membranes for foundations, basements and underground structures.

Foundations

Why It Works Where Others Have Failed

If you've already tried repairs that didn't hold, here's why MARISEAL is different

Seamless

Continuous membrane that eliminates the weak points of sheet membranes — joints are the most vulnerable areas.

Cold Application

No open flame required — maximum safety on site. Applied with roller, brush or airless spray gun.

800% Elasticity

Expands and contracts with the building movement without cracking, even at temperatures of -40°C.

25+ Year Durability

EOTA-DIBt certified service life of minimum 25 years when properly applied.

UV Resistance

MARISEAL 400 aliphatic protective layer provides color stability and resistance to UV radiation.

Fire Rating Broof(t4)

One of the highest fire classifications for liquid waterproofing systems.

Breathable Membrane

Water vapor permeable — allows waterproofed surfaces to breathe, preventing condensation beneath heated areas and eliminating the risk of blistering or delamination. The ideal solution for terraces with de-icing or underfloor heating systems.

Easy Repairs

Damaged areas are simply repaired by reapplying the layer, without replacing the entire membrane.

Does This Situation Sound Familiar?

Many buildings share the same problems. Here's how we solve them — for good.

Leaks at joints and seams

MARISEAL forms a continuous membrane with no joints or seams — zero weak points.

Cracks from structural movement

800% elasticity — the membrane stretches with the building without tearing, even at -40°C.

Rapid UV and weather degradation

MARISEAL 400 aliphatic top-coat — UV and color stability throughout the entire service life.

Condensation and moisture under waterproofing

MARISEAL is vapor permeable — surfaces breathe freely, no condensation forms beneath heated areas. Fully compatible with terraces equipped with de-icing or underfloor heating systems.

Fire risk from torch application

Cold application with roller — no open flame on site, maximum safety.

Costly repairs and frequent maintenance

Certified 25+ year durability. Simple local repairs without replacing the entire membrane.

Complex shapes impossible to seal with sheets

Applied as liquid on any shape — corners, penetrations, junctions — no cutting or fitting required.

Why Other Solutions Don't Work

Compare for yourself — the numbers show why liquid waterproofing solves the problems that traditional methods only postpone

Criterion	MARISEAL Liquid polyurethane	Bituminous Membranes (BCA)	PVC / EPDM Membranes	Acrylic coatings
Durability	25+ years certified	10–15 years	15–20 years	3–5 years
Joints / Seams	Zero joints	Many joints	Welded seams	Seamless
Elasticity	800%	~50%	200–400%	100–200%
Thermal resistance	-40°C → +90°C	-10°C → +70°C	-30°C → +80°C	-5°C → +50°C
UV resistance	Excellent	Poor	Moderate	Poor
Cold application	Yes, with roller	Open flame	Gluing/welding	Yes, with roller
Complex shapes	Any shape	Difficult	Requires cutting	Any shape
Repair	Local, simple	Zone replacement	Patches	Reapplication
Vapor permeability	Breathable — no condensation	Total barrier	Total barrier	Partial
European certifications	ETA, BBA, CE	Variable	Yes	Rare
Total cost (over 25 years)	Lowest	2–3x replacements	1–2x replacements	5–8x replacements

Data is based on official manufacturer technical specifications and our practical experience.

Request Free Assessment

Square meters applied

Satisfied clients

10–15

Years workmanship warranty

Unresolved complaints

How Liquid Waterproofing Is Applied

From assessment to warranty — every stage of the waterproofing process

Free Assessment

We inspect the surface and identify existing problems. We provide personalized recommendations.

Surface Preparation

Cleaning, crack repair and primer application for optimal adhesion.

System Application

Application of the MARISEAL membrane in successive layers, according to technical specifications.

Finishing & Warranty

Video — Complete Process

From start to finish

10–15 Years Warranty

Your Peace of Mind, Guaranteed in Writing

Every project completed by Aquazid comes with a written warranty of 10 to 15 years, depending on the waterproofing system selected, covering both materials and workmanship. MARISEAL products have an EOTA-DIBt certified durability of over 25 years, and they are manufactured by Saint-Gobain, one of the world's largest building materials producers.

Written warranty for every project

EOTA-DIBt certified durability

Products from Saint-Gobain Group

Post-project support included

10 to 15-year warranty

Quick repairs when needed

What Our Clients Say

Experiences from clients who chose MARISEAL liquid waterproofing applied by Aquazid

We had terrace infiltration problems for years. We tried bituminous membranes twice, without success. With MARISEAL, the problem disappeared completely. Three years have passed and not a single drop.

Mihai C.

Homeowner, Cluj-Napoca

The Aquazid team waterproofed our building — a flat roof of over 400 sqm. The work was done quickly, cleanly and professionally. They explained every step. The difference compared to previous contractors is enormous.

Homeowners Association

Residential building, Brasov

We chose Aquazid for all our balconies — 12 in total. The decorative finish looks exceptional and works perfectly. The warranty and Saint-Gobain products gave us complete confidence.

Radu L.

Property developer, Sibiu

We contacted Aquazid for our home's foundation waterproofing. Everything was executed flawlessly, with top materials. Now the basement is completely dry, even after torrential rain.

Dan M.

Homeowner, Brasov

We have been working with Aquazid for 2 years on residential projects. Work quality is consistent, deadlines are met and communication is excellent. The ideal partner for developers.

Adrian S.

Builder, Bucharest

The building's terrace had leaks with every rain. Aquazid applied MARISEAL 250 and since then we have had no problems at all. The work took only 3 days for 200 sqm. Very satisfied!

Elena P.

Building manager, Ploiesti

We renovated a restaurant with an open terrace and needed a solution resistant to heavy traffic. MARISEAL 400 applied by Aquazid was the perfect choice — it has held up perfectly for over a year.

Cristian T.

Restaurant owner, Constanta

Very professional! They came for the assessment, created a detailed plan and executed the work exactly as promised. The price was fair relative to the quality of materials and workmanship.

Ioana A.

Villa owner, Timisoara

I have been working in construction for 20 years and I can say that MARISEAL is the best waterproofing system I have ever seen. The Aquazid team applies it to very high standards. I recommend without hesitation.

Vasile N.

Construction engineer, Iasi

We wanted a transparent solution for the planter on our terrace and Aquazid recommended MARITRANS MD. The result is spectacular — the decorative mosaic is visible and it is perfectly waterproof.

Laura B.

Apartment owner, Cluj-Napoca

Certifications & Standards

ETA 05/0197

European Technical Assessment

CE Marking

European regulation compliant

BBA 17/5443

British Board of Agrément

ISO 9001:2015

Quality management

ISO 14001:2015

Environmental management

Our Quality Ecosystem

From the European manufacturer to on-site application — every link guarantees excellence

Maris Polymers

Manufacturer

European leader in polyurethane membranes, part of the Saint-Gobain group. Present in over 50 countries.

TEMAD Distribuție

Authorized Distributor Romania

Exclusive supplier of MARISEAL products on the Romanian market. Permanent stock, fast delivery, technical support.

Aquazid

Professional Applicator

Team specialized in applying MARISEAL systems. Up to 15-year warranty.

Frequently Asked Questions about Liquid Waterproofing

Answers to the most common questions about MARISEAL polyurethane liquid waterproofing

Didn't find your answer?

Our team of specialists is ready to answer any question about liquid waterproofing, MARISEAL products or your specific project.

Free Consultation

Call us or send a message — the on-site assessment is free and with no obligation.

Send your question

How much does liquid waterproofing cost compared to traditional membranes?

The initial investment for MARISEAL can be 15-30% higher than bituminous membranes. However, in the long run it is the most cost-effective solution: the 25+ year durability and near-zero maintenance costs make the total lifecycle cost 2-3 times lower than alternatives that require periodic replacement.

How long does a waterproofing project take?

The execution time for a balcony, terrace or roof is 4–7 working days for areas up to 100 sqm. The process involves multiple application stages, each requiring a controlled drying interval between coats, essential for membrane adhesion and performance. For areas exceeding 100 sqm, execution time increases proportionally with the surface area and complexity of the project.

Can it be applied over old waterproofing?

Yes, one of the major advantages of MARISEAL is that it can be applied directly over old membranes — bituminous, PVC, EPDM, acrylic or even metallic — without removing the existing layer. An adhesion primer is applied first, followed by the complete MARISEAL system. You save time, money and waste.

Does liquid waterproofing withstand extreme temperatures?

Absolutely. MARISEAL 250 operates in the range of -40°C to +90°C and has an elongation at break of 800%. The membrane expands and contracts with the building structure without cracking. It is tested and certified for climatic conditions across all of Europe, including areas with extreme temperature variations.

What warranty does Aquazid offer?

We provide a written warranty of 10 to 15 years on every project, depending on the waterproofing system selected, covering both materials and workmanship. MARISEAL products have an EOTA-DIBt certified durability of over 25 years.

Is MARISEAL safe for the environment and health?

Yes. Maris Polymers holds ISO 14001 certification for environmental management and publishes Environmental Product Declarations (EPD). MARISEAL 300 is even certified for contact with drinking water. Application is cold-applied, without open flame and without the emission of toxic substances on site.

Done with leaks? Call us.

Free on-site assessment. No obligations, no hidden costs — only professional solutions with a written warranty of up to 15 years.

Free Assessment — Call Now

Contact Liquid Waterproofing — Aquazid

We are here to help you with any waterproofing project

Contact Information

You can reach us through any of the methods below or by filling out the contact form.

Technical Department

0755 107 448

Sales Department

0742 251 344

Email

contact@aquazid.ro

Registered Office

Str. Popa Șapcă nr. 8, Brașov

Working Hours

Monday - Friday: 08:00 - 18:00
Saturday: 09:00 - 14:00

Imavision Media&Development SRL

CUI: RO21184860 | Reg. Com.: J08/542/2007