Emergency Water & Flood Damage Restoration across NSW
- Rapid 24/7 Response for Water & Flood Emergencies
- Certified IICRC-Trained Restoration Technicians
- Structural Drying, Moisture Mapping & Full Contamination Control
Fast, Professional Water and Flood Damage Restoration Across NSW
When water enters your property, damage begins immediately. Whether caused by a burst pipe, storm flooding, sewage overflow or leaks that saturate building materials, fast action is critical. On Guard Sanitation provides rapid, compliant and fully documented Emergency Water and Flood Damage Restoration across NSW, keeping your home or business safe from mould, contamination and structural damage.
Request a quote
Trusted to restore safety and peace of mind
Posted on Phil GaleTrustindex verifies that the original source of the review is Google. I recently hired mark for mold remediation work at my home, and I couldn't be more satisfied with the service. From the initial consultation to the final inspection, mark was professional, knowledgeable, and extremely reliable. He arrived on time, explained the work clearly, and made sure everything was up to code.Posted on Simmeone HanlenTrustindex verifies that the original source of the review is Google. Cannot recommend Mark highly enough. He was patient, caring and understanding with such a sensitive matter. He and his team did an outstanding job and we were all so thrilled with the results as they exceeded our expectations.Posted on Charbel ElhageTrustindex verifies that the original source of the review is Google. Great and very reliable team you honestly will not find better and explains in ENGLISH exactly the issues and what needs done to fix it . Thanks to mark and the team job well done 🙏Posted on Trent ShahTrustindex verifies that the original source of the review is Google. Mark and the team are incredible at what they do. They are reliable, thorough, and take real pride in their work. You can tell he genuinely cares about providing the best possible service and making sure everything is done properly. If you’re looking for someone you can count on to get the job done right, Mark and On-Guard Sanitisation are the ones to call. Highly recommend!Posted on Joseph HalavazisTrustindex verifies that the original source of the review is Google. I highly recommend the services of On-Guard Sanitisation. They are very reliable, empathetic, fairly priced and show dedication to their clients.Posted on Andrew GTrustindex verifies that the original source of the review is Google. Highly recommend On-Guard's services. I have utilised their services for clients on multiple occasions and have consistently been impressed with their professionalism, quality of work and cost. Thank you guys!Posted on Susan ConollyTrustindex verifies that the original source of the review is Google. On-guard sanitation provided a service for the retirement village where I work. Mark was prompt, professional, very effective and kind and friendly to boot! I would definitely recommend their help on what is probably your worst day.Posted on Albert NasrallaTrustindex verifies that the original source of the review is Google. Mark has carried out lots of odd jobs for me both in the building and biohazard industries. I would not hesitate in hiring Mark again as he is polite, respectful and goes above and beyond every single time. Thank you Mark and On-guard Team!!Posted on Swati MitraTrustindex verifies that the original source of the review is Google. Mark and his team were extremely thorough and professional in conducting testing and remediation work. I would highly recommend them for anyone experiencing mould related issues. Mark was also kind enough to provide additional guidance on mitigating future issues.Posted on MARYANNE dayTrustindex verifies that the original source of the review is Google. Mark and his team did an excellent job. They were very thorough. I would highly recommend them for any job that needs specialist cleaning.
What Causes Water Damage in NSW Properties?
The most common situations include:
- Storm or flash flooding
- Burst pipes or plumbing failures
- Leaks that saturate flooring, walls and cavities
- Appliance failures
- Overflows or internal flooding events
In all cases, early detection and extraction significantly reduce the risk of mould, odours and long-term structural issues.
Complete Water and Flood Damage Restoration Services
Water damage spreads quickly through flooring, walls, insulation and subfloors. Our structured, evidence-based response ensures your property is safely restored from the initial extraction through to full drying and sanitisation.
What Our Emergency Water Services Include:
- Emergency Liquid Extraction – We remove standing and absorbed water immediately to stop further damage.
- Structural Drying and Contents Drying – Dryers and dehumidifiers restore safe moisture levels in building materials and affected belongings.
- Carpet, Underlay and Floor Covering Removal – Necessary when saturation makes drying unsafe or ineffective.
- Subfloor Drying and Moisture Control – Critical for preventing hidden mould and structural deterioration.
- Thermal Imaging and Moisture Mapping – Detects water spread behind walls, under floors and inside cavities.
- Mould Prevention and Treatment – “When wet materials are not dried, mould starts to develop after about three days.” We take action before this happens.
- Drying Equipment Installation – Commercial-grade air movers, dehumidifiers and HEPA air scrubbers.
- Anti-Microbial Surface Treatment & Sanitisation – Using DF200, the same two-part solution used for biohazard and mould remediation.
- Restoration Reporting for Insurance Claims – Moisture logs, photos and documentation provided.
Why Choose On-Guard Sanitisation?
Fast Emergency Response
Emergency teams respond within 2–4 hours in most cities, providing 24/7 trauma cleaning whenever urgent help is needed.
Immediate Human Support
A care advisor answers every call, offering guidance and dispatching a local team immediately or arranging a suitable appointment.
Compassionate Support
Supportive guidance through difficult situations, offering empathy, clear communication, and help from start to finish.
Skilled, Trained Teams
Technicians follow strict safety protocols, including pathogen controls and respiratory protection, meeting all regulatory requirements.
Fully Licensed & Insured
Emergency teams respond within 2–4 hours in most cities, providing 24/7 trauma cleaning whenever urgent help is needed.
Science-Led Remediation
A proven three-step, science-driven process, verified using ATP testing, ensures hospital-level cleanliness and safety on every job.
Private & Discreet
Teams follow your access preferences and use discreet vehicle cover, ensuring complete privacy and professional handling.
Satisfaction Guarantee
All work is completed by trained staff with consistent processes, ensuring safe outcomes backed by a full satisfaction guarantee.
Our Emergency Water and Flood Damage Restoration Process
- Remove Affected Contents
We take out saturated carpets, furniture, belongings and materials to prevent further damage. - Commence Water Extraction
“We immediately commence extraction.”
Standing and accessible water is removed using professional extraction equipment. - 3. Assess Moisture Levels
Moisture meters and thermal imaging identify how far the water has travelled:
“We assess what materials have been affected using moisture testing equipment.” - Decontamination with DF200
We follow IICRC water category guidelines (Cat 1, Cat 2, Cat 3):
“We work under the IICRC classification to determine the right decontamination process.” - Install Drying Equipment & Containment
Air movers, dehumidifiers and HEPA air scrubbers dry the structure and control airborne contamination:
“We set up containment and install air scrubbers within and outside the containment zone to capture anything airborne.”
Understanding Hidden Water Damage in NSW Homes and Businesses
Water rarely stays in the place where it first appears. In many NSW properties, water moves quickly underneath flooring, inside wall cavities and through insulation, causing damage long before it becomes visible. Moisture inside these materials leads to swelling, structural weakness, odours and mould — often without any obvious surface signs.
This is why moisture testing is critical. As our team explains, “Hidden moisture is detected using moisture testing instruments. These are used on structural materials, walls and floors to identify elevated moisture that may not be visible on the surface.”
Our Emergency Water and Flood Damage Restoration across NSW service uses both moisture meters and thermal imaging to track water migration across multiple building layers.
Grey water and sewage events require higher levels of treatment due to contamination. Following IICRC standards, we adjust our approach based on water category:
- Category 1: Clean water
- Category 2: Grey water
- Category 3: Sewage/black water
Each level requires tailored sanitisation, DF200 application and safe disposal of affected materials. Our diagnostic-led approach ensures your property is restored to safe, habitable condition — thoroughly and correctly.
Why Structural Drying Is Essential After Flooding or Leaks
Once visible water is removed, many property owners assume the job is complete. Unfortunately, this is when hidden damage usually begins. Building materials such as timber, plasterboard and insulation hold moisture long after the surface feels dry. Without structural drying, mould may begin developing within 48–72 hours — especially in NSW’s humid climate.
Our technicians emphasise the importance of full moisture removal:
“Structural drying and proper decontamination are key steps.”
We install commercial-grade drying equipment, including air movers, dehumidifiers and subfloor drying systems, to return materials to safe moisture levels.
Containment and HEPA filtration add another layer of protection:
“We set up containment and air scrubbers to control airborne contamination and protect unaffected areas.”
DF200 antimicrobial treatment is then used to eliminate bacteria and microbial activity remaining after water intrusion. This ensures long-term safety and prevents mould growth.
By combining extraction, sanitisation and structured drying, our Emergency Water and Flood Damage Restoration across NSW service restores stability to the building and protects it from long-term deterioration.
Need Emergency Water or Flood Damage Restoration? We’re Ready 24/7.
Fast action prevents mould, structural damage and costly repairs. On Guard Sanitation provides immediate, certified Emergency Water and Flood Damage Restoration across NSW for homes, commercial buildings and government facilities.
Frequently Asked Questions
What are the first steps when you arrive?
We remove affected contents, extract all accessible water, perform moisture testing, apply DF200 and install drying equipment with containment if needed.
How do you detect hidden moisture?
With moisture meters and thermal imaging to identify moisture behind walls, under floors and inside cavities.
What happens if restoration is delayed?
Mould may begin forming after around three days, and structural materials may deteriorate. Fast action is essential.
Can you prevent mould after a flood or leak?
Yes — through structural drying, DF200 treatment, containment and air scrubbers.
Do you handle contaminated water or sewage?
Yes, following strict IICRC classifications and safety protocols.
We Clean Up Life’s Accidents
If you have to deal with the aftermath of a virus outbreak, accident, death, drug lab incident, or hoarding, On-Guard Sanitisation is here to restore your business, home, or property. We quickly get things back to the way they were







