NLR team completed the works over a long weekend while collaborating with builders. Repair works were carried out in mould-cleared areas simultaneously while mould remediation was in progress in other areas. All restoration and repair works were completed in a faster time frame and the Vet Clinic was able to commence its operations. Video Case Study: Serious Mould Heavy visual mould growth in 5 rooms of a vet clinic remediated in one week. If your home or business is suffering from mould or water damage, call NLR today on 1300 356 633 or click the contact us button below.

Works completed • Installed HEPA filtration units to filter the air of mould concentrations in the air during and in-between days of remediation. • Sealed air conditioning vents from spreading more mould. This was to be fixed by others. • All affected books were HEPA vacuumed and dry wiped with microfibre cloths, packed into boxes and sent for delivery to a third party irradiation facility • All other books were also HEPA vacuumed and dry wiped. They were put back in place. • Clean shelves, surfaces, walls with HEPA vacuuming and wet wash wiping • Photographic documentation of book order, so that when books are returned, they can be put back in order

Mould Remediation Process: NLR technicians put on the appropriate PPE gear to protect themselves during the mould remediation process. Containment barriers to contain the mould were installed to minimise further contamination 2 HEPA filter Air Scrubbers were installed, in a negative airing configuration, to remove airborne mould spores and dust particulates from the air. This was to improve air quality during the work process The affected area was HEPA vacuumed The wall was Pressure cleaned and extracted, to help remove engrained mould in the brickwork A further HEPA vacuuming was done and an abrasive scrub and treatment clean were done to the wall. Further HEPA vacuuming, wash/wipe, treat vertical and horizontal surfaces with an appropriate mould cleaning solution was done to secondary affected areas. Once all was done, to help seal the minimal amount of mould that was engrained into the brickwork, the affected area was encapsulated with a mould resistant coating (IAQ 06100).

Mould Remediation Process Stage 1 Remediation – Contents Removal and Processing Technicians removed all contents from affected rooms, listing and photographing non-recoverable contents Once done, non-recoverable were removed and disposed of offsite HEPA vacuuming and treatment cleaning all recoverable contents and packing on-site Stage 2 Remediation – Building and Ceiling Cavity Remediation All building surfaces in the room was HEPA Vacuumed and treatment clean to remove mould In conjunction with builders, Technicians helped strip out the affected ceiling, waste is bagged and disposed of off-site safely Air conditioning cleaning HEPA Vacuum and treatment clean to all vertical and horizontal surfaces in ceiling space. Run HEPA filtration during the remediation process.

Project Overview   Due to improper shower steam venting, moisture was leaking into the attic void space for a long time, causing mould growth throughout the ceiling space, and spreading onto the ceiling of the upper level. NLR Restorations was called in to investigate and completely remediate the complete spread of mould. Misaligned venting causing moisture leak Thermal reading of moisture NLR technicians decided, to safely remove the mould infection from the house, they first needed to mitigate the mould damage from spreading further, and prevent secondary damage from occurring when carrying out invasive works. To do this NLR installed and implemented negative venting using two air movers and three HEPA filtration units. This effectively took the contaminated air (mould spores), filtered it and blew it out of the house. Technicians also installed containment barriers at entrances, to seal off the affected area. HD 200um plastic sheeting was installed on the flooring, including the stairs, to protect the flooring as well. They removed all affected porous fittings (curtains and blinds), for offsite cleaning by a subcontractor. Negative air diagram Containment barrier with zip access After the electrician came through to make safe invasive works, NLR Technicians put on level 3 PPE gear, cut, stripped and double bagged the ceiling plasterboard and insulation of the second level. A disposal skip was left on-site during the day, for technicians to dispose of affected materials. Further negative airing was implemented. Ceiling plaster removed PPE gear example Afterwards, NLR technicians, wearing full level 3 PPE gear, started physical mould remediation to the ceiling/roof space, by HEPA vacuuming, scrubbing and wiping timber trusses, sarking, ceiling framing and walls. Additionally, technicians also started mould remediation to all upper-level room surfaces. Once the mould was remediated heavily, drying of moist building material could commence, with the installation of two dehumidifiers and two air movers. H2O2 vaporisation was installed in the contained area to add more surety that the mould was killed, especially in hard to reach places. Example of HEPA vacuuming, physical mould removal H2O2 set up Lastly, after removing the sheeting NLR technician’s carpet and tile cleaned all areas of the home, and remediated three air-conditioning units, using anti-microbial treating methods. Before removing equipment, technicians took post-remediation mould sampling and testing to verify remediation results (2 air samples, 1 air-o-cell, 1 via-cell and two ATP surface samples). Ceiling space mould free Lower level cleaned and passed

Heavy Mould Damage Procedure Safety Our first concern to address to completing the job was ensuring the safety of all trades and people attending the site. We installed appropriate containment and air filtration devices (AFD) under negative pressure to ensure both safety and secondary damage. Once complete an Electrical make-safe was conducted to the house and solar panels. Contents A large concern was mitigating further damage to the insureds contents. On first day, contents items such as furniture or any other porous items that were at risk were identified and isolated in a clean environment. We then installed an AFD in that area to ensure safety to the items. During the below remediation, all mould affected contents were document and assessed. Remediation All affected non structural building materials in the lower level were then removed by technicians wearing electronic resperators and full set of PPE. The building material was then disposed off site. After these were removed, mould remediation to exposed structural building elements began. This includes HEPA vacuuming to all affected surfaces, abrasive scrub to all timber joists, beams, & stud frames, wet wipe and treatment to all affected areas, and pressure clean to concrete subfloor and tiled areas. Once the primary remdiation had been completed, the area was then treat with a H202 vaporisation as a knock down treatment. All exposed timber was then excapsulated with ecapsulation paint. Testing A third party hygienist was then engaged to give the clearance testing.

Further Actions Removal of the contaminated plasterboard components (both ceilings and walls) from the next door shop side The middle plasterboard sheet has been encapsulated with IAQ 6100 mould resistant paint. Recommend wall to have mechanical ventilation installed and the ducting to be 200mm x 200mm to allow sufficient airflow; ducting with eave vents The wall to be made of water-resistant and mould resistant board The source of the moisture from the next door tenancy still exists and needs to be addressed. If left unattended, the high moisture levels will continue to allow mould growth

How We Restored The Property Preliminaries: SWMS, JSA observed. Appropriate PPE was worn by technicians and persons entering the property Implement HEPA Filtration for air management and negative venting Strip, bag & dispose of non-recoverable carpet, underlay and gripper strips in bedrooms 1,2,3 & 4 to onsite skip bin Remediation/decontamination cleaning to all surfaces by HEPA vacuuming then chem sponge, damp wiping, low-pressure wet washing, etc., methodology applied appropriately to deal with chemical contamination found on testing. Includes walls, ceilings, kitchen cupboards, wardrobes, switches, windows, window frames, doors, fittings, etc) Plaster patch holes in solid ceiling and walls to prevent moisture absorption during cleaning Mould remediation cleaning and treatment to building surfaces – physical removal of mould by HEPA vacuuming, Wash/wipe, treat vertical and horizontal surfaces with appropriate mould cleaning solution including ceiling, walls, floor, etc) Decontamination clean treatment to floors and vinyl Structural drying of damp building materials by dehumidification and air movement Knockdown odour treatment, Hydrogen Peroxide treatment Collect 4 x Clandestine Drug Lab testing of plasterboard walls and 3 x bio tape surface sample after building decontamination clean, clearance testing

How we Removed the Mould Initial Steps, Containment and Hepa Filtration SWMS, OH&S completed and complied Make safe plumbing works – isolate water supply and cap-off drains, by plumber Install mould containment – Ensure isolation of primary mould contaminated area from other areas (secondary affected areas. Electrical make safe Implement HEPA filtration and negative air venting as required, to remove and manage airborne mould spores and other particulate and improve air quality during work process throughout both levels as required. Complete strip-out to ceiling and walls to Rumpus room, Bathrooms, Hallway, Bedroom 2 & 3 and possibly other areas, as required strip, remove all cabinetry fit-out and dispose Removal of Mould Mould remediation to exposed timbers, stud walls, timber floor, joists, beams, ceiling frames, etc – physical removal of mould by extensive HEPA vacuuming, abrasive scrubbing, wet wipe and treat. Mould remediation to building horizontal and vertical surfaces including walls, kitchen cupboards, ceiling, cornices, doors, remaining cabinetry, windows, etc – by HEPA vacuuming, wash/wipe, treat with microfibre cloth and appropriate cleaning solution. Pressure clean and treat concrete slab, tiled areas and other hard floor surfaces antimicrobial knockdown treatment, H2O2 vaporisation or similar, as required structural drying of wet building materials Encapsulated timbers with encapsulant sealer (IAQ6100) Provide protection covering to timber floor in entrance and including stairwell. Remove skirting boards, strip-out plasterboard up to 1200mm high in primary affected areas, extent of stripping depending upon concealed mould growth in cavities. Remove kick panels in kitchen, assess mould damage to kitchen bench cupboard – may requires removal. Antimicrobial knockdown treatment, H2O2 vaporisation or similar, as required. Structural drying of wet building materials Encapsulate timbers with encapsulant sealer (IAQ6100) Progress remediation verification sampling and testing – by others (independent hygienist)