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Odor Control Enclosure Repair for Water & Wastewater Facilities

Corrosion Protection for Odor Control Enclosures Exposed to H2S and Treatment Chemicals

Odor control systems play a critical role in water and wastewater treatment facilities, but the enclosures that house exhaust fans and related equipment are constantly exposed to harsh operating conditions. In this case study, a municipal water authority in the upper Midwest was experiencing atmospheric corrosion on odor control enclosures caused by H2S exposure and other treatment chemicals.

To restore and protect the affected assets, Unconventional Solutions recommended an Odor Control Enclosure Repair system using proper surface preparation, a corrosion-resistant primer, and a high-performance protective coating.

This project demonstrates how the right coating system can help water and wastewater facilities extend the life of fiberglass and high carbon steel enclosures while reducing the risk of ongoing corrosion damage.

Project Overview

Application: Odor Control Enclosure Repair
Industry: Water & Wastewater
Substrate: Fiberglass / High Carbon Steel
Completion Date: October 2025
Products Used: Resichem 506 Aluprime and Resichem 555 Resinox

The Problem: Atmospheric Corrosion from H2S Exposure

Corroded odor control enclosure before repairThe municipal water authority had odor control enclosures housing exhaust fans that were suffering from atmospheric corrosion. In water and wastewater environments, hydrogen sulfide, commonly known as H2S, and other treatment chemicals can create aggressive conditions that attack metal, fiberglass, fasteners, seams, and coated surfaces.

 

 

Left unaddressed, corrosion on odor control enclosures can lead to:

  • Premature equipment deterioration
  • Coating failure
  • Structural damage to enclosure panels
  • Higher maintenance costs
  • Reduced service life of exhaust fan housings
  • Increased risk of downtime or emergency repairs

For this facility, an Odor Control Enclosure Repair was needed to clean, prepare, and protect the affected surfaces before corrosion could continue spreading.

The Solution: Hydroblasting, Primer, and Protective Coating

Unconventional Solutions inspected the affected odor control enclosures and recommended a coating system designed to protect against harsh wastewater treatment conditions.

The repair process started with hydroblasting at 3,000–5,500 PSI to remove dirt, oils, grime, and loose debris from the surface. This step helped prepare the fiberglass and high carbon steel substrates for coating adhesion.

After surface preparation, a primer coat of Resichem 506 Aluprime was applied. The system was then finished with two coats of Resichem 555 Resinox at 16 mil wet film thickness.

The completed Odor Control Enclosure Repair helped restore a clean, protected surface and improve long-term corrosion resistance in a demanding water and wastewater environment.

Benefits of Odor Control Enclosure Repair

A properly specified Odor Control Enclosure Repair system can provide several advantages for municipal and industrial wastewater facilities.

Key benefits include:

  • Protects enclosures exposed to H2S and treatment chemicals
  • Helps stop ongoing atmospheric corrosion
  • Extends the service life of odor control equipment
  • Restores the appearance of corroded enclosure surfaces
  • Reduces the need for costly replacement
  • Supports long-term asset protection in wastewater environments
  • Improves corrosion resistance on fiberglass and high carbon steel substrates
  • Helps protect exhaust fan housings and odor control system components

Why Odor Control Enclosures Need Corrosion Protection

Odor control systems are often installed in areas where chemical exposure, moisture, and airborne contaminants are unavoidable. These conditions can accelerate corrosion, especially when H2S and wastewater treatment chemicals are present.

Instead of waiting for corrosion to cause structural deterioration or equipment failure, facilities can use an Odor Control Enclosure Repair system to restore damaged surfaces and add long-term protective coating performance.

For municipal water authorities, wastewater treatment plants, and industrial facilities, this type of repair can be a practical alternative to replacing enclosure panels, fan housings, or other exposed components.

Need Help With Odor Control Enclosure Corrosion?

Unconventional Solutions helps water and wastewater facilities protect critical infrastructure with advanced corrosion control coatings and repair systems.

Whether you are dealing with Odor Control Enclosure Repair, H2S corrosion, fiberglass enclosure damage, or chemical exposure in a wastewater treatment facility, our team can help identify the right surface preparation and coating system for your application.

Call USI at 248-735-7000 or contact us today to discuss your corrosion protection project.

Concrete Repair Systems for Safety and Longevity with Chris Mathson from Resimac

Who It’s For

This session is useful for:

  • Maintenance Engineers

  • Plant Managers

  • Asset Management Technicians

  • Marine Surveyors

  • Pipefitters

  • Pump Repair Engineers


About the Speaker

Chris Mathson is the Business Development Manager, at Resimac Ltd., bringing 20+ years of experience in coatings.



Concrete failures may seem minor, but in industrial and commercial settings they create serious safety and financial risks. Small surface defects — a divot, a cracked nosing, or a spalled patch — are common trip hazards: a stiletto heel or a toe catching on an uneven slab can cause a fall, and forklifts hitting a change in elevation can spill loads or even tip.

Slips, trips and falls are the top OSHA-reportable incident type year after year; Aberdeen research estimates the employer cost for each reported incident at roughly $10,000–$50,000. That shows how even seemingly small concrete issues can carry outsized consequences.

Beyond immediate safety, concrete’s porosity creates long-term problems. Acid or chemical spills can seep into the substrate, accelerating deterioration and potentially contaminating soil — a regulatory and remediation headache on top of repair costs.

Because of these risks, routine inspection and timely repair of concrete — from leveling slabs and repairing nosings to sealing and chemical protection — should be a priority for any plant, warehouse, or commercial facility.

Most calls we get come down to two questions: what’s causing the damage, and how do we fix it for good? At Resimac, concrete repair is the foundation — literally — of our system. Our repair products create a uniform, durable substrate so protective barrier coatings applied afterward will perform as intended.

There are many concrete repair options on the market, but the key difference with Resimac is longevity and resistance to harsh exposures. Ordinary cementitious patches rely on simple water-and-binder adhesion; they often fail when moisture in the slab freezes and expands. In climates with repeated freeze–thaw cycles, weak repairs pop loose after a season or two.

Our goal is one permanent fix, not a short-term patch. We focus on materials and application methods that bond deeply, tolerate moisture movement, and hold up to freeze–thaw and chemical exposure — so you don’t have to keep calling back.

Joints, cold joints and slab separation are common culprits behind concrete failures in warehouses and commercial facilities. Differential settlement or poorly tied pours creates small ramps and gaps that are easy to miss — until a forklift hits one. Even a slight elevation change can jolt a lift, spill expensive loads, or, worst-case, tip the machine. That’s why repairs must be targeted: not every crack gets filled, but every hazardous joint or separation should be addressed.

Many DIY or big‑box cementitious patches rely on water‑based binders that often fail under repeated traffic and freeze–thaw cycles. For high‑traffic, high‑risk areas we use epoxy‑resin repair systems. Epoxy penetrates and chemically bonds with the substrate, producing a tenacious bond — pull‑off tests frequently separate the surrounding concrete before the repair fails.

Beyond adhesion, load resistance matters. Standard concrete often tests around 3,000–5,000 PSI; our epoxy‑quartz repair blends commonly deliver 12,000–15,000+ PSI equivalent performance, plus superior wear resistance from the quartz aggregate. In short: properly specified epoxy repairs provide durable, long‑lasting surfaces that keep equipment stable and people safe — and save repeated patchwork down the road.

Resimac 570 and 571: quick, dependable concrete repairs

Resimac 570 — fast, localized repairs
Resimac 570 is designed for small, high‑use repairs where speed matters. It’s self‑priming (no primer required), wets out and rebuilds the substrate, trowels smoothly, and reaches initial hardness in about 45 minutes. At 70°F it’s safe for forklift traffic in roughly 4 hours, so small damaged areas—broken handrail anchors, chipped slab edges, or localized spalls—can be restored and returned to service the same day. Packaged for convenient handling, 570 works bucket‑to‑bucket for slightly larger patches too.

Resimac 571 — vertical and overhead rebuilds
Resimac 571 is formulated for vertical and overhead concrete work: walls, tank surfaces, bridges, and overpasses. It’s packable to roughly 2–3 inches without slumping, bonds directly to sound concrete (no rebar exposure or pinning required), and builds without sag. Cure profile is slower than 570—mechanical hardness develops over several hours—making it ideal where workability and non‑slump performance are essential.

Bottom line: use 570 when you need a fast, return‑to‑service patch; choose 571 when you need a stable, buildable solution for vertical or overhead concrete repairs.

Resimac 576 vs 577 — when to choose which for larger repairs

Resimac 570 handles fast, localized patches. For larger resurfacing or full‑bay repairs, you want a product with more working time — enter Resimac 576.

Resimac 576:

  • Designed for larger areas: floor resurfacing, secondary containment, or re‑screening entire slabs.
  • Longer workability (around 20–25 minutes) so you can trowel and finish consistently over a big area.
  • Slower cure than 570, so plan for longer return‑to‑service times before overlaying or heavy traffic.

Resimac 577:

  • Formulated identically to 576 in handling and mechanical properties, but uses Enobilac resin as the binder.
  • Delivers substantially improved chemical resistance — ideal where aggressive chemicals, solvents, or persistent exposure caused the original damage.

How to choose:

  • Use 576 when you need a robust resurfacing product and plan to topcoat later with a chemical‑resistant barrier (typical workflow: repair → cure → primer/coating).
  • Use 577 when you want to eliminate extra steps: it can be applied across the area to provide both repair and integrated chemical protection, avoiding the need to return with primers and multiple coating layers. That makes 577 a time‑saving choice for tight schedules (e.g., secondary containment where you need a reliable chemical‑resistant surface quickly).

In short: 576 for large repairs where you’ll follow with a tailored coating; 577 when chemical resistance and a one‑step solution matter most.

QUESTIONS ASKED:

  • Where are these products available and only director at retailers?
  • What repair materials hold up best in free thaws environments?
  • How do you prevent repaired areas from failing differently than the surrounding concrete?
  • Are any of these materials compatible with humid environments?

Elastomeric Repair on a Spillway for Manufacturing Facilities

Flexible Composite Repair for a Damaged, Leaking Overflow Spillway

A major automotive component manufacturer was experiencing production disruption due to a damaged and leaking overflow spillway. The spillway played an important role in balancing flow between holding tanks awaiting treatment, making the repair critical to plant operations. Instead of relying on a temporary patch or full replacement, Unconventional Solutions inspected the issue and recommended an Elastomeric Repair on a Spillway using Resiflex repair materials and reinforcement mesh.

This project demonstrates how elastomeric composite repair systems can help manufacturing facilities address leaks, damaged fiberglass surfaces, and challenging equipment repairs where flexibility and durability are important.

The Problem: Damaged and Leaking Overflow Spillway

damaged leaking fiberglass overflow spillway before repair

The manufacturer had a damaged overflow spillway that was leaking and disrupting production. This spillway was used to help balance flow between holding tanks before treatment, so failure in this area created a direct operational concern.

Because the substrate was fiberglass, the repair needed to bond properly while also allowing for the movement and flexibility often required in fiberglass and spillway applications.

That made an Elastomeric Repair on a Spillway the right solution.

 

The Solution: Elastomeric Composite Repair With Reinforcement

After inspecting the damaged area, Unconventional Solutions recommended an elastomeric composite repair system designed for the spillway’s conditions.

The repair included:

This approach helped repair the damaged fiberglass spillway while creating a flexible, reinforced system suitable for the application.

Benefits of Elastomeric Repair on a Spillway

Choosing an Elastomeric Repair on a Spillway can offer several advantages for manufacturing and industrial facilities dealing with leaks, damaged fiberglass, or flow-control infrastructure.

Key benefits include:

  • Helps repair leaking spillways without full replacement
  • Works well for fiberglass substrates
  • Provides a flexible repair system for areas subject to movement
  • Reinforces damaged areas with mesh or fiberglass backing
  • Helps reduce production disruption caused by leaks
  • Supports continued flow control between holding tanks
  • Can be used on irregular shapes and difficult repair areas
  • Offers a practical solution for damaged overflow systems

Why Use Elastomeric Repair Instead of Replacement?

In manufacturing environments, damaged spillways, tanks, and fiberglass components can create major downtime concerns. Full replacement may require shutdowns, fabrication lead time, or costly removal and installation work.

An Elastomeric Repair on a Spillway gives facilities a practical alternative when the goal is to stop leaks, reinforce damaged areas, and keep critical systems operating.

For fiberglass spillways and overflow systems, elastomeric repair materials are especially useful because they can provide both adhesion and flexibility.

Need Help With a Leaking Spillway or Fiberglass Repair?

Unconventional Solutions helps manufacturing plants, wastewater facilities, and industrial operations repair damaged infrastructure with advanced composite repair and corrosion control systems.

Whether you need an Elastomeric Repair on a Spillway, fiberglass repair, gasket repair, or leak repair solution, our team can help identify the right products and process for your application.

Call USI at 248-735-7000 or contact us today to discuss your repair project.

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