filtration

Exhaust Stack Service

Ensure proper emissions discharge with professional

Function

Directs filtered exhaust air safely away from the building, workers, and air intakes at proper height and velocity

Location

Extends from exhaust fan through roof, typically vertically

Typical Lifespan

20-30 years for galvanized steel; longer for stainless

Call (877) 489-3727 Get Service Quote

Service Options

Repair Service

Replacement Service

Preventive Maintenance

Signs of Exhaust Stack Assembly Failure

Exhaust odors re-entering building

Stack leaking at joints or seams

Visible corrosion or rust

Stack damaged by weather or impact

Rain or debris entering exhaust system

Stack height no longer meets code

Excessive vibration in stack

What Causes Exhaust Stack Assembly Failure

Understanding the root cause helps determine whether repair or replacement is the best option.

Corrosion

common

Moisture and solvent vapors corrode metal, especially at joints.

Weather Damage

occasional

Wind, ice, and UV exposure degrade stack over time.

Improper Design

occasional

Stack too short, wrong diameter, or poor location causing issues.

Vibration Fatigue

occasional

Fan vibration causing cracks or loosened joints.

Physical Damage

rare

Impact from equipment, vehicles, or maintenance access.

Repair vs. Replace Decision Guide

Repair When...

Joints can be resealed
Minor corrosion can be treated
Rain cap can be replaced
Support structure needs reinforcement

Replace When...

Severe corrosion has compromised structure
Stack height needs to increase
Changing to different material (stainless)
Relocating for building modifications
Upgrading for code compliance

Cost Comparison

Joint repair $200-500. Rain cap replacement $200-600. New stack installation $2,000-10,000+ depending on height and material.

Lifespan Considerations

Galvanized stacks last 15-20 years in moderate environments; stainless lasts longer but costs more upfront.

Brands Using This Component

We service exhaust stack assembly across all major paint booth brands.

Custom Fabrication

GalvanizedStainless Steel

Nordfab

Quick-Fit Ductwork

US Duct

Industrial Stacks

Spiral Mfg

Spiral Pipe

Our Exhaust Stack Assembly Service Process

Inspection

Inspect stack condition, joints, supports, and rain protection.

Code Review

Verify stack height and location meet current requirements.

Repair Assessment

Determine if repairs or replacement needed.

Perform Work

Seal joints, replace sections, or install new stack.

Verification

Verify proper discharge and no leakage.

Exhaust Stack Assembly Service FAQ

Common questions about exhaust stack assembly repair and replacement

Stack height requirements depend on local codes, building height, proximity to air intakes, and neighboring buildings. Generally, stacks must extend above the roofline and discharge away from occupied areas. WERCS can verify your stack meets requirements.

Common causes include stack too short, discharge near air intakes, wind patterns creating downdrafts, or insufficient exhaust velocity. The solution depends on the specific cause—may require stack extension, relocation, or velocity increase.

Galvanized steel is common and cost-effective. Stainless steel lasts longer, especially with corrosive coatings. For aggressive solvents or high-humidity environments, stainless or coated materials may be required.

Have a question not answered here?

Call us at (877) 489-3727

Related Components

Exhaust Fan Ductwork Filter Replacement

Related Troubleshooting

Exhaust Odors Emissions Issues

Need Exhaust Stack Assembly Service?

WERCS technicians have the expertise and parts to get your exhaust stack assembly working properly.

Call (877) 489-3727 Request Service Quote