Rektoratstraße 74, 41747 Viersen +49 2162 24716 info@fischer-abdichtungstechnik.de
DE | NL | EN
Retroactive Horizontal Barrier

Stop rising damp in the masonry

Wet basement, peeling plaster or mold? Our WTA-certified horizontal barrier protects your house permanently from the inside – completely without expensive excavation from the outside.

✓ No excavation work: Clean execution completely from the inside
✓ High-tech solution: Sustainable effect through state-of-the-art injection technology
✓ Master craftsman: First-class know-how through permanently trained specialists
Book an on-site appointment now! 📞 +49 2162 24716
⚠️ Dampness rising
✓ Permanently dry walls
🛡️ Injection horizontal barrier
Identify Hazards

The Problem: Rising Dampness

If a horizontal barrier in the masonry is missing or has leaked over the decades, the masonry sucks up water from the ground like a sponge. The consequences are severe for the building structure, your health, and your heating costs – because damp masonry cools the walls down extremely quickly. Damage to masonry and plaster is the result. Mold spores can spread unchecked.

Peeling plaster and damp basement wall

Peeling Plaster & Damage Salts

The rising water transports harmful salts from the ground into the masonry. During drying, these crystallize, expand, and blow off plaster and wall paint.

Black mold and spores on a damp wall

Mold & Spores

Permanently damp basement walls offer the perfect breeding ground for dangerous black mold. The spores pollute the indoor air and endanger the health of your family.

Damp basement masonry and structural damage

Loss of Building Fabric

The water weakens the binder in the masonry. Over years, the stone loses its load-bearing capacity, which massively reduces the value of the building and leads to cracks.

Sustainable Building Sealing

The Solution: Retroactive Horizontal Barrier

With our highly effective, pressureless injection method, we establish an impenetrable barrier directly in your house's masonry. The WTA-certified special cream penetrates deep into the finest capillaries, binds molecularly with the masonry, and forms a continuous, water-repellent (hydrophobic) barrier layer with a thickness of a full 25 cm.

Fischer borehole injection

For all masonry types

Whether brick, natural stone, concrete, or mixed masonry – our special cream is universally applicable and works reliably on all mineral building materials.

Environmentally friendly & Odorless

The injection materials used are solvent-free, odorless, and absolutely harmless for living spaces.

Fast execution

An average basement is usually completely renovated in just 1–2 days and immediately ready for use again. This saves valuable time and costs!

Structured Project Flow

In 4 steps to a dry basement

We make the renovation as simple as possible for you. From the first contact to the professional final approval, you receive everything from a single source.

01

Make an appointment

Contact us by phone or via the online form for your free initial consultation.

02

Free damage analysis

An experienced technician inspects the damage on-site and measures the moisture in the masonry.

03

Transparent fixed price quote

You receive a tailor-made renovation concept with a guaranteed fixed price commitment.

04

Professional execution

Our specialists implement the horizontal barrier cleanly, dust-free, and in compliance with WTA.

Request an appointment for damage analysis now!
Frequently Asked Questions

Questions About Horizontal Barrier & Basement Sealing

Here you will find answers to the most important questions of our customers. Do you have any further questions? Please feel free to contact us!

Typical signs are damp patches, peeling plaster, musty smell, salt efflorescence (white fluff) on the wall, or mold formation.

The WTA-approved hydrophobizing cream is introduced via a chain of boreholes at a spacing of approx. 10-12 cm. It penetrates deep and forms a permanently water-repellent layer.

No! The pressureless injection method is performed entirely from the inside. Your garden and paved paths remain completely untouched.

Our WTA-certified injection creams are extremely durable and provide decades of permanent protection against rising dampness in the masonry.

No. We exclusively use solvent-free, odorless, and environmentally friendly special creams that are completely safe for humans and pets.

Yes! As a supra-regional master company, we handle projects in the entire radius of 100 km around Viersen, as well as nationwide for larger construction projects.

Our Service Area

Fast Assistance within a 100 km Radius of Viersen

As a regional master company, we are quickly on site. Our service area covers a 100-kilometer radius around Viersen – including Eindhoven, Düsseldorf, Dortmund, Cologne, and Maastricht.

Contact

Request a free on-site damage analysis now!

Do not leave damp walls to chance. Secure your free consultation appointment including professional moisture measurement on site.

Phone Number:

+49 2162 24716

WhatsApp
📸 Send Damage Photos:

Easily send us photos of your damp basement wall directly via WhatsApp. We will give you a free, non-binding initial assessment!

Send photos via WhatsApp now

Online Appointment Request

Please fill out the form. We will contact you within 2 hours on working days!

WhatsApp