What is Spray Coating?

Spray Coating is a modern method for internal pipe rehabilitation, where liquid polyester resin is sprayed from the inside into the damaged pipe. The material dries in layers, automatically forming a new, completely intact pipe within the old one – entirely without the need for excavation work on walls, ceilings, or floors.

The result is a seamless internal coating that permanently protects the piping system against corrosion, cracking, and leaks, while simultaneously preserving the full flow capacity of the pipeline.

Spray Coating | Nationwide Internal Pipe Rehabilitation | Infravadis

How Does the Spray Coating Method Work?

The Spray Coating method follows a clearly defined, proven process – from initial inspection to final approval. Depending on the application area – determined by CCTV inspection – we deploy the optimal coating system.

Step 1: Inspection and Cleaning

Prior to rehabilitation, the affected piping system is thoroughly cleaned and fully inspected with a camera. Deposits, residues, and loose wall sections are precisely removed.

Step 2: Drying of the Pipe Wall

The cleaned pipe is dried to ensure optimal adhesion of the polyester resin to the inner wall and to allow for a uniform layer build-up.

Step 3: Spraying of the Coating Material

A specially developed rotating head distributes the liquid polyester resin uniformly and seamlessly along the entire inner pipe wall. This device is capable of navigating complex pipe configurations, 90° branches, and hard-to-reach areas – covering up to 33 meters in a single pass.

Step 4: Curing and Commissioning

The resin cures in layers, forming a smooth, stable new inner wall. Within a few hours, the piping system is fully operational again. Learn more

Applications for Spray Coating

From the base plate to the roof – also for industrial wastewater systems – Spray Coating offers protection for your wastewater pipes.

Rehabilitating Vertical Pipelines – Without Opening Ceilings

Remaining Watertight, Even During Heavy Rainfall

Unrestricted Drainage – Permanent and Reliable

 

Rehabilitation during ongoing operation 

No Production Stoppage Due to Pipe Rehabilitation

Rehabilitate wastewater pipelines in historic buildings without structural intervention

Advantages of Spray Coating – Why This Method is Compelling

Compared to traditional rehabilitation methods, Spray Coating offers significant advantages – particularly in sensitive environments where operational interruptions and construction noise are intolerable – further enhanced by professional diagnostics.

Completed in Hours, Not Weeks

While conventional pipe renewals can take days or weeks, the rehabilitated pipe system, utilizing the Spray Coating method, is fully operational again within just a few hours.

Permanent Corrosion Protection

The cured polyester resin provides long-term protection for the pipe system against corrosion, re-cracking, and leaks. Further leaks at the repaired site are impossible.

No Excavation – No Noise – No Operational Interruption

As no walls, floors, or ceilings need to be opened, ongoing operations remain completely undisturbed. Tenants, patients, and employees are not affected.

Significantly More Economical Than New Installation

Without the need for demolition, drywall, painting, and material disposal, Spray Coating is considerably more cost-effective than traditional pipe renewal when considering the total cost.

The cured polyester resin protects the piping system long-term against corrosion, renewed cracking, and leaks. Any further leakage at the rehabilitated section is ruled out.

Our coating experts are deployed nationwide across Germany

Frequently Asked Questions about Spray Coating

All essential information concerning innovative pipe coating and complementary services.

How Long Does a Spray Coating Rehabilitation Last?

A professionally applied spray coating is designed to last for several decades. The polyester resin used is corrosion-resistant, dimensionally stable, and resistant to typical wastewater contaminants. One of our unique selling points is a long-term test conducted by an independent engineering firm. This test certifies that our coating has a service life of over 50 years.

From Which Pipe Diameter is Spray Coating Possible?

The method can be applied to pipes with an internal diameter of DN 40 mm, typically up to DN 200 mm in building applications. For larger nominal diameters, supplementary rehabilitation methods are available.

How Long Does a Spray Coating Rehabilitation Take?

Depending on the length and condition of the affected section, the application typically takes only a few hours. Following the curing period, the pipe system is immediately ready for operation.

Is it Necessary to Cease Operations During Rehabilitation?

A professionally applied Spray Coating is designed for a service life of several decades. The polyester resin used is corrosion-resistant, dimensionally stable, and resistant to typical wastewater constituents. One of our USPs is a long-term test conducted by an independent engineering firm, which certifies a service life of over 50 years.

Is Spray Coating Also Suitable for Older Buildings with Existing Piping Systems?

Yes. The method is effective with many common pipe materials, including SML and cast iron, making it particularly suitable for older buildings and existing properties where extensive demolition work would be disproportionate.

How to Commission a Spray Coating Application with Infravadis?

Contact us via the form or directly by phone. Our experts will provide a free consultation, assess the situation using a camera system, and provide a binding offer – nationwide and without long waiting times.

Interested in Spray Coating? We would be pleased to advise you!

Erfahren Sie, ob Spray Coating, Kanalsanierung oder 

Rohrreinigung die richtige Lösung ist.

Additional information

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