When a pipe bursts, a washing machine floods a room, stormwater enters a property or a leak goes unnoticed, removing the standing water is only the beginning.
A floor can look dry while moisture remains trapped inside carpet underlay, timber, plasterboard, wall cavities, skirting, subfloors and other building materials.
This is where professional drying equipment becomes important.
Commercial dehumidifiers and air movers are designed to create the environmental conditions required to remove moisture from affected materials and the surrounding air. However, simply placing one dehumidifier in a wet room does not necessarily mean the building is being dried correctly.
You need the right type of equipment, sufficient drying capacity, appropriate airflow and, importantly, a way of determining whether the affected materials are actually drying.
Disaster Restorations provides professional dehumidifier hire, air mover hire and restoration equipment hire in Brisbane and Melbourne, backed by practical restoration experience.
Our team is led by Simon Ramke, an IICRC Master Water Restorer, giving customers access to specialist restoration knowledge rather than simply hiring equipment and being left to guess what happens next.
This guide explains how dehumidifiers work after water damage, why air movers are usually used alongside them, how equipment requirements are determined and when water damage should be handled by a professional restoration team instead of attempted as a DIY drying project.
Why Is a Dehumidifier Needed After Water Damage?
Water naturally moves into porous building materials.
Following a leak or flood, moisture can be absorbed by materials including:
- Plasterboard
- Timber framing
- Timber flooring
- Carpet
- Carpet underlay
- Insulation
- Concrete
- Cabinetry
- Skirting boards
- Furniture and other contents
Removing standing water with an extractor can substantially reduce the amount of water present, but extraction alone does not necessarily remove moisture that has already been absorbed into these materials.
The next stage is drying.
A professional dehumidifier removes moisture from the air. As moisture evaporates from wet building materials into that air, the dehumidifier continually removes that water vapour, helping establish conditions that allow further evaporation to occur.
This process is part of structural drying.
Why Isn’t a Household Dehumidifier Always Enough?
There is an important difference between controlling everyday household humidity and drying a water-damaged building.
A domestic dehumidifier may work well for general humidity control in a bedroom or living area. However, a property affected by flooding can contain a significant moisture load spread throughout multiple materials.
Professional restoration equipment is designed for these more demanding conditions.
Commercial restoration dehumidifiers can generally remove substantially larger quantities of moisture and are designed to operate continuously during drying projects.
Disaster Restorations’ equipment range includes professional LGR — Low Grain Refrigerant — dehumidifiers used in restoration applications.
Rather than selecting equipment simply according to the floor area of the room, a proper drying strategy considers the extent of the water intrusion and the types and quantities of materials affected.
What Is an LGR Dehumidifier?
LGR stands for Low Grain Refrigerant.
An LGR dehumidifier is designed to continue removing moisture effectively as environmental conditions become progressively drier.
That is useful during structural drying because conditions change throughout the project.
Early in the drying process there may be considerable moisture available. As drying progresses, removing the remaining moisture from materials can become increasingly difficult.
Professional LGR units are therefore commonly used during water damage restoration.
Disaster Restorations offers commercial LGR dehumidifiers as part of our restoration equipment hire range in Brisbane and Melbourne.
What Is Psychrometry and Why Does It Matter?
Professional structural drying involves more than switching machines on.
One of the key technical concepts involved is psychrometry — the study of the properties of air and water vapour and the relationship between factors such as:
- Temperature
- Relative humidity
- Moisture content
- Vapour pressure
- Dew point
The objective is to create an environment that encourages moisture in wet materials to evaporate and allows that moisture to be removed efficiently.
Temperature also influences drying because warmer conditions can often increase the rate at which moisture moves from materials into the air.
But simply making a room hot is not the solution.
Temperature, humidity, airflow, material condition and dehumidification must work together.
This is one of the reasons restoration experience matters. Effective drying is about controlling an environment rather than simply operating an appliance.
Do I Need Air Movers as Well as a Dehumidifier?
In many water-damage situations, yes.
Air movers and dehumidifiers perform different but complementary functions.
Air Movers
Air movers create high-velocity airflow across wet surfaces.
This airflow helps moisture evaporate from affected materials into the surrounding air.
Dehumidifiers
The dehumidifier then removes that moisture from the air.
A simple way of understanding the relationship is:
Air movers encourage evaporation. Dehumidifiers remove the resulting moisture from the air.
Running a dehumidifier without adequate airflow can result in slower drying of certain surfaces.
Likewise, running fans in a closed wet environment without sufficient dehumidification can move moisture into the air without adequately removing it.
A correctly designed drying environment uses both processes together where appropriate.
How Many Dehumidifiers Do I Need After Water Damage?
There isn’t one correct answer based solely on the number of square metres.
Two rooms of identical size can require very different drying strategies.
Equipment requirements can be influenced by:
- Amount of water involved
- Length of time materials remained wet
- Size of the affected area
- Ceiling height
- Type of construction
- Number and type of wet materials
- Environmental conditions
- Whether water has entered wall or floor cavities
- Effectiveness of the initial water extraction
- Whether the drying area can be contained
- Capacity and specification of the dehumidifier being used
For example, a small room with heavily saturated carpet, underlay, plasterboard and timber may contain a greater moisture load than a much larger room where only part of the flooring became wet.
This is why choosing a dehumidifier based solely on room dimensions can be misleading.
The equipment needs to be matched to the actual drying load.
For larger or complicated losses, professional assessment is strongly recommended.
How Many Air Movers Do I Need?
Again, the answer depends on what is wet rather than simply the room size.
The aim is to establish appropriate airflow across affected surfaces.
The configuration may vary depending on whether technicians are drying:
- Carpet
- Walls
- Timber
- Cabinetry
- Subfloors
- Concrete
- Structural elements
- Contents
Airflow also needs to reach the affected surfaces effectively.
Simply placing several fans in the centre of a room is not necessarily an efficient drying strategy.
Professional restorers consider the direction and distribution of airflow as part of the overall drying system.
How Long Should You Run a Dehumidifier After Water Damage?
There is no universal number of hours or days.
Drying time can vary considerably depending on the nature of the water loss.
Factors affecting drying time include:
- Severity of saturation
- Materials involved
- Effectiveness of water extraction
- Humidity
- Temperature
- Airflow
- Dehumidifier capacity
- Whether hidden cavities are affected
- How quickly drying began
- Building construction
The important point is that drying should ideally be determined by moisture readings rather than by time alone.
Switching equipment off because a room feels dry can be misleading.
A carpet surface may feel dry while moisture remains within its underlay or subfloor. Similarly, the surface of plasterboard or timber may appear dry while elevated moisture remains within the material.
Professional restoration therefore involves monitoring drying progress with appropriate moisture-measuring equipment.
How Do You Know When a Property Is Dry?
This is one of the biggest differences between professional drying and simply leaving fans running for several days.
Restoration technicians use moisture-detection instruments to assess affected materials and monitor drying progress.
Depending on the situation, this may involve:
- Moisture meters
- Environmental temperature readings
- Relative humidity measurements
- Comparison readings from unaffected materials
- Documented drying records
Drying decisions are therefore based on measurable conditions rather than appearance alone.
Disaster Restorations uses moisture monitoring as part of its structural drying process so that drying progress can be evaluated throughout the project.
What Restoration Equipment Might Be Required?
Depending on the damage, a drying project may require more than a dehumidifier.
Commercial Dehumidifiers
Used to remove water vapour from the air and establish more favourable drying conditions.
Air Movers
Used to create controlled airflow across wet surfaces and encourage evaporation.
Water Extractors
Removing as much liquid water as practical before evaporation begins can dramatically improve drying efficiency.
Extraction is therefore an important first step following many water losses.
Air Scrubbers
Air scrubbers use filtration to capture airborne particles and may be used where air quality management is required as part of a restoration or remediation project.
Moisture Meters
Moisture detection and measurement equipment helps determine where moisture is present and whether affected materials are progressing toward acceptable drying conditions.
Specialist Floor and Mat Drying Equipment
Some floors and assemblies may require specialised techniques to encourage drying beneath or within the affected structure.
Disaster Restorations maintains a range of professional restoration equipment available for hire in Brisbane and Melbourne.
Why Fast Drying Matters
Water damage can continue developing after the visible water has disappeared.
Extended moisture exposure can contribute to:
- Swelling of timber products
- Deterioration of plasterboard
- Damage to floor coverings
- Delamination
- Staining
- Odours
- Corrosion
- Damage to cabinetry
- Deterioration of finishes
- Microbial growth
Consequently, the objective should not simply be to remove standing water.
It should be to identify where moisture has travelled and establish an appropriate drying strategy as quickly as practical.
Can I Dry Water Damage Myself?
There are situations where experienced contractors, builders, plumbers, facility teams or property managers may be comfortable hiring restoration equipment themselves.
Disaster Restorations offers equipment hire for exactly this reason.
However, DIY drying is not appropriate for every water loss.
Professional assessment should be considered when:
- Large areas are affected
- Water has entered walls or ceilings
- Flooring systems are saturated
- Moisture may be trapped beneath flooring
- The water source may be contaminated
- Sewage is involved
- Mould is visible or suspected
- Water has remained for an extended period
- Electrical systems may be affected
- Structural materials are involved
- The moisture source cannot be identified
- The property is part of an insurance claim
In these situations, incorrect drying can potentially leave hidden moisture behind and allow secondary damage to develop.
Why Hire Drying Equipment From a Restoration Specialist?
There is a fundamental difference between hiring a machine from a general equipment supplier and hiring equipment from people who work in water damage restoration.
A general hire company can provide equipment.
A restoration specialist understands why, where and how that equipment is used.
Disaster Restorations is led by Simon Ramke, IICRC Master Water Restorer.
Simon holds advanced restoration credentials supported by training and certification across water damage restoration, applied structural drying, microbial remediation, fire and smoke damage restoration, carpet restoration and health and safety.
That experience matters when customers have questions such as:
- Which machine should I hire?
- Do I need air movers as well?
- Is one dehumidifier sufficient?
- How should the equipment be positioned?
- How do I know when the building is dry?
- Is the damage too extensive for DIY restoration?
Instead of simply hiring a machine, customers can deal with a company whose everyday work involves restoring water-damaged buildings.
Dehumidifier Hire Brisbane
Brisbane’s climate can create challenging drying conditions, particularly during periods of high humidity, heavy rainfall and storm activity.
If a Brisbane property experiences a burst pipe, roof leak, appliance failure, internal flooding or storm-related water intrusion, professional drying equipment can help establish a controlled drying environment.
Disaster Restorations offers dehumidifier hire in Brisbane together with:
- Commercial LGR dehumidifiers
- Professional air movers
- Air scrubbers
- Water extraction equipment
- Specialist drying equipment
Whether you’re a builder, plumber, property manager, restoration contractor or property owner, speak with our team about the equipment appropriate for your situation.
Dehumidifier Hire Melbourne
Water damage in Melbourne can occur at any time from plumbing failures, roof leaks, appliance failures, storms and accidental flooding.
Disaster Restorations provides dehumidifier hire in Melbourne and access to professional restoration equipment for residential and commercial drying projects.
Our equipment range includes commercial dehumidifiers, air movers and other professional restoration equipment used by restoration technicians.
More importantly, our equipment hire is backed by real restoration knowledge.
If you’re unsure what equipment the project requires, talk to our team before simply selecting a machine based on room size.
Restoration Equipment Hire or Full Water Damage Restoration?
Sometimes hiring equipment makes sense.
Sometimes calling a restoration team is the safer and more cost-effective option.
If the affected area is relatively straightforward and you have experience dealing with water-damaged materials, equipment hire may provide what you need.
For substantial losses, however, professional restoration provides additional benefits including:
- Moisture assessment
- Water extraction
- Drying-system design
- Structural drying
- Monitoring and documentation
- Cleaning and sanitising
- Mould remediation where required
- Removal of damaged materials
- Building repairs and reconstruction
Disaster Restorations is also a licensed building company, allowing restoration and building repair work to be coordinated within the same business where required.
That means clients can have one team involved from the initial water damage through drying, restoration and subsequent building repairs.
Restoration Expertise Matters More Than the Machine
Professional equipment is important, but successful water-damage restoration isn’t simply about having the biggest dehumidifier.
Effective structural drying requires understanding the building, the moisture, the affected materials and the drying environment.
That is why equipment selection, water extraction, airflow, dehumidification and moisture monitoring all matter.
If you’re looking for dehumidifier hire, air mover hire or water damage restoration equipment in Brisbane or Melbourne, Disaster Restorations can provide professional-grade equipment backed by specialist restoration expertise.
Need Restoration Equipment?
Speak with the Disaster Restorations team about your water-damage project and the equipment you may require.
Equipment hire available in Brisbane and Melbourne.
Call 1300 134 620 for assistance or request an equipment hire quote online.
If the water damage is too extensive for DIY drying, our restoration team can assess the situation and manage the complete water extraction, structural drying, restoration and building repair process.
Frequently Asked Questions
What type of dehumidifier should I hire after water damage?
Commercial LGR dehumidifiers are commonly used for structural drying because they are designed for demanding restoration environments. The appropriate equipment will depend on the amount of water, affected materials, environmental conditions and size of the drying area.
How many dehumidifiers do I need for a flooded room?
Room size alone is not enough to determine equipment requirements. The amount of moisture within the affected materials, extent of damage, dehumidifier capacity, extraction performed and environmental conditions should also be considered.
Should I use air movers with a dehumidifier?
Air movers and dehumidifiers are commonly used together during structural drying. Air movers encourage moisture to evaporate from wet materials while dehumidifiers remove moisture from the surrounding air.
How long should I run a dehumidifier after flooding?
There is no universal drying time. Equipment should generally remain in operation until monitoring confirms that affected materials have reached appropriate drying conditions rather than simply being switched off because surfaces feel dry.
Can I hire commercial dehumidifiers in Brisbane?
Yes. Disaster Restorations provides commercial restoration equipment hire in Brisbane, including LGR dehumidifiers, air movers and other specialist drying equipment.
Can I hire restoration equipment in Melbourne?
Yes. Disaster Restorations provides restoration equipment hire in Melbourne for water and flood-damage drying applications.
When should I call a professional instead of drying water damage myself?
Professional assessment is recommended where water damage is extensive, contaminated water is involved, hidden cavities or structural materials are affected, mould is suspected, or the project requires specialised moisture assessment and monitoring.
Why hire equipment from Disaster Restorations?
Disaster Restorations combines professional restoration equipment with specialist technical knowledge. The company is led by IICRC Master Water Restorer Simon Ramke and can also provide professional restoration and building repair services when equipment hire alone is not appropriate.