Workshop Dust Control for Shared Industrial Tenancies

Shared industrial tenancies can be efficient for landlords and practical for tenants, but they also create a common challenge: dust rarely stays where it is made. Grinding, sanding, cutting, packaging and light fabrication can all send particles into shared corridors, offices, amenities and adjoining tenancies if the ventilation and filtration setup is not planned carefully.

For property managers and facility managers, the aim is not just to fit a filter and hope for the best. It is to map how dust moves through the building, decide which spaces need separate treatment, and create a maintenance plan that suits the actual use of each tenancy.

Start with the way the unit is used

Every shared industrial unit behaves differently because the dust load depends on the work being done. A joinery shop, a metal workshop and a warehouse with occasional packing activity will each create different particle sizes and volumes.

Before specifying filtration, look at:

• •The types of trades operating in each tenancy
• •Which areas generate the most dust
• •Whether dust is dry, fibrous, oily or sticky
• •How often doors, roller shutters and internal openings are used
• •Whether there are shared air return paths, common amenities or office spaces
• •Whether the site has local exhaust extraction, general ventilation or both

This first step matters because filtration works best when it is part of a broader airflow strategy. If dust is pulled through shared return air pathways, a higher grade filter alone will not solve the problem.

Identify the shared risk points

In many multi-tenancy industrial buildings, dust does not spread evenly. It gathers where there is movement of air, people or products.

Pay close attention to:

• •Reception areas and front offices near workshop space
• •Doorways between tenancies
• •Mezzanines and upper-level offices
• •Stairwells, corridors and toilet blocks
• •Return air grilles located close to dusty operations
• •Air conditioning units serving more than one tenancy

If one tenant is creating heavier dust than the others, the landlord may need a separate filtration approach for that tenancy rather than relying on a building-wide setup.

Separate clean air from dusty air paths

The best dust control plans reduce the chance of cross-contamination by keeping airflows as distinct as possible. This usually begins with zoning.

Where the layout allows, treat the building as a series of air zones rather than one shared volume. That can mean:

• •Providing dedicated systems for high-dust tenancies
• •Using separate return air paths for cleaner office areas
• •Maintaining slight pressure differences so dust is less likely to migrate
• •Sealing gaps around penetrations, service openings and poorly fitted doors
• •Keeping air movement from dusty areas away from shared clean areas

If the unit has a central mechanical system, the mechanical services engineer or building owner should confirm how it is intended to operate and what site requirements apply. AS 1668.2:2024 is often relevant to ventilation design, but the correct solution still depends on the building and tenancy arrangement.

Think about doors, seals and housekeeping

Filtration is only one part of the picture. Dust can travel because of pressure changes, open doors and poor housekeeping.

Practical measures include:

• •Door closers and weather seals where appropriate
• •Enclosed transfer points for materials
• •Clear cleaning routines for shared corridors and air paths
• •Good housekeeping around return air grilles and filter access points
• •Keeping dust-generating tasks away from supply air intakes

These measures can reduce the amount of dust reaching the filters, which may help the system stay more stable between inspections.

Choose filters for the actual dust load

Filter selection should match the system and the dust characteristics, not just the label on the box. In shared industrial buildings, it is common to need different filters for different parts of the tenancy, especially where office areas sit beside workshops.

For general HVAC systems, many sites use staged filtration so the pre-filter catches larger debris and the finer filter handles smaller particles. This can help protect the equipment and improve particle capture in occupied areas.

If you are comparing filter grades, remember that MERV, EN 779 and ISO 16890 ratings do not convert directly. EN 779 classes such as G3, G4 and F5 to F9 are still widely used in Australia, although ISO 16890 is now the current standard in many specifications.

For some specialist applications, HEPA filtration may be considered. If a HEPA filter is specified, the relevant EN 1822 class matters: H13 filters are at least 99.95% efficient and H14 filters are at least 99.995% efficient at the most penetrating particle size. That level of filtration is not needed for every shared industrial tenancy, so it should be specified only where the system design and site requirements justify it.

Ask whether the filter can handle the service conditions

The right filter is not only about particle capture. It also needs to suit the airflow, dust type and access arrangements.

Questions to work through include:

• •Is the filter frame sized correctly for the holder or ducted unit?
• •Can the system maintain airflow as the filter loads with dust?
• •Is the filter media suited to coarse dust, fine dust or mixed loading?
• •Are there access issues that make replacement or inspection difficult?
• •Does the tenancy generate dust spikes during certain tasks?

Some filters are designed to be washable - check the product instructions before cleaning or reusing them.

If the existing filters do not fit properly, or if the system has been modified over time, you may need custom air filters to achieve the right seal and performance.

Plan for inspection, monitoring and replacement

In shared industrial tenancies, filter servicing is best based on what is actually happening on site rather than a fixed calendar alone. Inspection frequency depends on the system, site conditions and dust load.

A useful maintenance plan will usually include:

• •Visual checks for visible dust build-up, damage or bypassing around the frame
• •Pressure drop monitoring where gauges are fitted
• •Regular review after changes in tenancy use or production methods
• •Checks after dusty work, renovation or fitout activity
• •Reference to the filter and equipment manufacturer instructions

If you use a building management system or have differential pressure gauges installed, they can help show when filters are becoming loaded and when airflow is no longer being maintained as intended.

For sites with recurring dust issues, it can also help to document which tenancy produced the load and when the system was last serviced. That makes it easier to decide whether the problem is the filter, the airflow balance, the housekeeping, or a combination of all three.

If you want support with ongoing maintenance, filter servicing and commercial filter servicing may be useful starting points.

Reduce dust migration at tenancy changeovers

Shared industrial buildings often change over time. A tenant may start with light storage and later move into cutting, fabrication or packaging. That change can create new dust pathways that were not part of the original design.

When a tenancy changes, review:

• •Whether the current filters still suit the new activity
• •Whether return air should be isolated or redirected
• •Whether door seals, wall penetrations or ceiling spaces now need attention
• •Whether the cleanest areas are still protected from workshop dust
• •Whether the cleaning contractor needs more frequent access to shared spaces

This is also a good time to reassess filters in supply air units, exhaust systems and any dedicated office conditioning. A small adjustment at changeover can prevent ongoing complaints and reduce wear on the HVAC system.

Work with the right supplier early

Workshop dust control is much easier to manage when the filter plan is considered before problems spread through the building. A good supplier can help match filter size, grade and construction to the system and the tenant mix, and can also help if you need unusual dimensions or non-standard frames.

Total Air Filtration is a family-owned air filter manufacturer and supplier in Hillcrest, Brisbane QLD, and we work with property and facility managers who need practical solutions for shared industrial spaces.

If you are reviewing a mixed-use workshop, fitting out a new tenancy, or trying to stop dust moving between units, we can help you choose or make the right filters. Call 07 3800 3448 or request a quote.

You can also explore our products or contact us if you want to discuss the system details first.