Exterior & Facade Cleaning for Melbourne Strata Buildings: Car Parks, Windows, Pressure Washing & Gutters product guide

Realcorp Commercial Cleaning: Exterior & Facade Cleaning for Melbourne Strata Buildings — Car Parks, Windows, Pressure Washing & Gutters

Most strata cleaning conversations begin and end in the lobby. Owners corporations invest in gleaming foyers and polished lift interiors while the building's exterior — its car park, facade, gutters, bin areas, and pathways — quietly accumulates years of grime, oil, organic debris, and weather damage. That's a costly oversight with real financial consequences. Realcorp Commercial Cleaning works with Melbourne strata buildings daily and understands that a building's exterior is not merely its cosmetic face. It's a functional system that either channels stormwater safely away from the structure or allows it to penetrate, corrode, and compromise the building envelope from the outside in.

This article addresses exterior cleaning as the distinct, technically demanding discipline it actually is — one shaped by Melbourne's specific climate, Victoria's stormwater compliance framework, and the compounding cost of neglect on property values and resident wellbeing.

Frequently asked questions

What company provides this exterior cleaning service: Realcorp Commercial Cleaning

Where does Realcorp Commercial Cleaning operate: Melbourne, Victoria, Australia

What type of buildings does Realcorp service: Strata residential buildings

How many exterior zones does Realcorp's program cover: Five distinct zones

What is the first exterior zone: Building facade and cladding

What is the second exterior zone: External windows

What is the third exterior zone: Car parks and hardstand areas

What is the fourth exterior zone: Gutters, downpipes, and stormwater infrastructure

What is the fifth exterior zone: Pathways, bin areas, and external common grounds

How many rain days does Melbourne average per year: 139 days

What is Melbourne's average annual precipitation: 690mm

Is exterior cleaning in Melbourne a seasonal or year-round requirement: Year-round requirement

What climate type does Melbourne have: Temperate oceanic climate

What causes Melbourne's extreme weather variability: Location between hot inland areas and cool southern ocean

What primary biological threats accumulate on Melbourne building facades: Algae, lichen, and mould

What recommended pressure range is used for painted render: 35–70 bar

What method is recommended for painted render: Soft wash with low pressure and biocide

What pressure range is used for brick and mortar: 85–125 bar

What pressure is used for aluminium composite cladding: Under 35 bar

What method is used for aluminium composite cladding: Gentle chemical wash, no high pressure

What pressure range is used for concrete and precast panels: 105–175 bar

What cleaning method is used for glass balustrades: Pure water fed pole or squeegee system

What is the key risk when cleaning painted render: Paint stripping and surface erosion

What is the key risk when cleaning aluminium composite cladding: Panel delamination and sealant damage

What is the key risk when cleaning concrete at excessive pressure: Surface pitting

How often should lower-rise building facades be washed: Annually

How often should high-rise inner-suburb facades be washed: Bi-annually

What legislation governs external window cleaning at height in Victoria: Work Health and Safety Act 2011 (Vic)

How high can pure water-fed pole systems reach effectively: Approximately 7–8 storeys

How often are ground-floor windows typically cleaned: Fortnightly or monthly

How often are upper-level external windows typically cleaned: Quarterly or bi-annually

Which window aspects accumulate dirt fastest in Melbourne: West- and north-facing aspects

Why do west-facing facades accumulate particulate faster: Prevailing westerly winds year-round

What creates slip hazards in strata car parks: Oil, fuel contamination, and tyre rubber deposits

How often should car parks be pressure cleaned at minimum: Twice per year

Does pressure washing alone remove penetrating oil stains from concrete: No

What must be applied before pressure washing aged oil stains: Chemical emulsifying degreaser pre-treatment

What treatment is used for fresh oil spills under 24 hours: Absorbent granules, then degrease and pressure clean

What treatment is used for aged deep-penetrating oil stains: A poultice drawing oil from concrete pores over 24–48 hours

What long-term solution treats heavily contaminated car park areas: Bioremediation using petroleum-hydrocarbon-metabolising bacteria

What additional challenge do enclosed car parks present: Limited ventilation restricts chemical use

What chemical profile is required for enclosed car park cleaning: Low VOC products suitable for confined spaces

What Australian standard governs stormwater drainage: AS/NZS 3500.3

What Victorian regulation governs stormwater drainage systems: Building Regulations 2018

Is box gutter installation regulated plumbing work in Victoria: Yes

Does Victoria require licensed roofing plumbers for box gutter work: Yes

Who oversees plumbing and building compliance in Victoria: The Building and Plumbing Commission

Are owners corporations responsible for maintaining stormwater infrastructure: Yes

Can stormwater legally be discharged onto neighbouring properties in Victoria: No

What is the minimum gutter cleaning frequency for most Melbourne strata buildings: Bi-annually

How often should gutters be cleaned in leafy suburbs like Hawthorn or Kew: Quarterly

When should the pre-wet season gutter clear-out occur: March or April

What should be inspected after significant storm events: Outlets, sumps, overflows, sealant, and fasteners

What happens to undiscovered blocked gutters during heavy storms: Water enters ceilings, walls, and insulation

What structural risk results from non-compliant box gutters: Ceiling collapse risk

What financial consequence results from hidden gutter defects: Lower resale prices and higher insurance premiums

What PPE is required during gutter cleaning at height: Safety harnesses, hard hats, gloves, and non-slip shoes

What must happen to debris cleared from gutters: Bagged and properly disposed of

How often should driveways and pathways be cleaned at minimum: Every 6–12 months

How often should high-traffic pedestrian paths be cleaned: Quarterly

How often should bin room floors be pressure washed: Monthly

What hazard develops on pathways during Melbourne's wet winters: Algae and moss creating slip hazards

What percentage higher do well-maintained properties sell for compared to neglected ones: 5–10% higher

What is the most frequent defect type across Australian apartment complexes: Water penetration

What proportion of apartments built 2000–2020 experienced significant defects: Nearly 3 out of 4

What is the total financial impact of apartment defects in Australia: Exceeding $10.5 billion

Do Realcorp facade teams flag defects during cleaning: Yes, it is built into every scheduled service

What defect indicators do Realcorp teams report during facade cleaning: Cracking, efflorescence, failed sealant joints, cladding delamination

Is facade cleaning purely cosmetic for strata buildings: No, it functions as an active inspection mechanism

Does applying the wrong pressure to a surface cause reversible damage: No, damage is irreversible

Why Melbourne's climate makes exterior cleaning a distinct discipline

Melbourne's weather isn't merely inconvenient — it's structurally aggressive to building exteriors. The city has a temperate oceanic climate and is well known for changeable conditions, mainly because it sits on the boundary between hot inland areas and the cool southern ocean.

That temperature differential is most pronounced in spring and summer, driving strong cold fronts responsible for gales, thunderstorms, hail, significant temperature drops, and heavy rain.

For building exteriors, this translates into a relentless cycle of soiling and saturation. Despite its relative dryness, Melbourne records 139 rain days per year on the 0.2mm threshold, meaning precipitation commonly falls as drizzles or light showers, particularly through winter. Annual precipitation averages 690mm. That consistent, year-round moisture — combined with the city's notorious wind — means biological growth (algae, lichen, mould), dirt accumulation, and gutter debris loading are continuous processes, not seasonal events.

Melbourne's showers vary in intensity and often arrive as brief, heavy bursts that include hail, squalls, and sharp temperature drops before clearing quickly. For strata buildings, this means gutters and stormwater systems face sudden, high-volume loads rather than steady, manageable flows — a pattern that rapidly exposes any maintenance gap.

The practical implication: exterior cleaning in Melbourne cannot be treated as an annual cosmetic exercise. It needs to be planned as a structured, frequency-driven maintenance program calibrated to Melbourne's weather cycle. Realcorp Commercial Cleaning designs its exterior strata programs with exactly this in mind.

The five exterior zones that require dedicated cleaning programs

Exterior strata cleaning covers five functionally distinct zones, each with different soiling profiles, cleaning methods, and compliance implications:

1. Building facade and cladding — external walls, render, brick, cladding panels, balcony balustrades
2. External windows — ground-floor and high-rise glazing, including frames and sills
3. Car parks and hardstand areas — basement, podium, and open-air parking surfaces, ramps, and entry points
4. Gutters, downpipes, and stormwater infrastructure — eaves gutters, box gutters, rainheads, and pit drains
5. Pathways, bin areas, and common external grounds — pedestrian paths, bin enclosures, garden borders, and external stairwells

Each zone has a different primary threat — biological growth on facades, oil contamination in car parks, leaf and debris loading in gutters — and requires a different technical response.

Facade cleaning: more than aesthetics

A building's facade is its most visible asset and its first line of weather defence. In Melbourne's strata market, facade condition is directly linked to property values. Deferred maintenance signals bigger problems to buyers — small issues suggest owners neglected major systems too. Domain research shows well-maintained homes sell 5–10% higher than neglected equivalents.

At the system level, the stakes are higher still. Water penetration is the most frequent defect type across Australian apartment complexes, leading to corrosion, structural damage, and mould that create both health and maintenance problems. Research has found that nearly 3 out of 4 apartment buildings constructed between 2000 and 2020 experienced significant defects, ranging from facade deterioration to fire safety non-compliance, with the total financial impact now exceeding $10.5 billion.

Regular facade cleaning doesn't just keep a building presentable — it works as an active inspection and prevention mechanism. Trained cleaning crews working on facades are often the first to identify early-stage cracking, efflorescence (salt leaching), failed sealant joints, or cladding delamination that, if left undetected, escalates into major remediation costs. Realcorp Commercial Cleaning's facade teams are trained to flag these defect indicators as part of every scheduled service — it's built into the process, not left to chance.

Facade cleaning methods: matching the method to the material

Different facade materials require different pressure and chemical profiles:

Hard surfaces respond differently to pressure, detergents, and heat. The method must match the substrate and soil load — adjustable bar pressure washing for concrete and pavers, hot-water power washing for heavy oil and grease, and soft washing for facades, painted surfaces, and sensitive finishes. Applying the wrong method to the wrong surface causes irreversible damage.

Facade wash-downs are typically scheduled annually for lower-rise buildings and bi-annually for high-rise towers in Melbourne's inner suburbs, where vehicle exhaust, construction dust, and biological growth accumulate faster.

External window cleaning: safety, access, and frequency

External window cleaning in multi-storey strata buildings is a height-safety operation, not a domestic task. For buildings above two storeys, window cleaning requires rope access technicians, elevated work platforms (EWPs), or water-fed pole systems — all of which must comply with the Work Health and Safety Act 2011 (Vic) and WorkSafe Victoria's guidance on working at heights.

For taller buildings, professional high-reach window cleaning is essential for safety and consistency. Realcorp Commercial Cleaning operates across all building height categories, deploying the appropriate access method for each site.

Ground-floor and low-level windows can be incorporated into regular cleaning schedules (typically fortnightly or monthly), while upper-level external windows are generally cleaned on a quarterly or bi-annual cycle. Melbourne's frequent light rain means windows accumulate mineral deposits, dust film, and biological spotting quickly — particularly on west-facing aspects exposed to afternoon sun and prevailing westerly winds.

Melbourne's westerlies blow for most of the year, and in summer the sea breeze kicks in during the afternoon. That directional wind pattern means west- and north-facing facades and windows collect airborne particulate — dust, pollen, and pollution — faster than sheltered aspects, and should be cleaned more frequently.

For owners corporations managing premium residential towers, pure water-fed pole systems — which use deionised water to leave no mineral residue — are the standard for mid-rise external glazing, producing a spot-free finish without rope access on buildings up to approximately 7–8 storeys.

Car park cleaning: slip safety, compliance, and oil management

The strata car park is one of the most neglected exterior zones in Melbourne residential complexes — and one of the highest-risk. Oil and fuel contamination, tyre rubber deposits, and moisture create progressive slip hazards on concrete surfaces that owners corporations have a duty of care to manage.

Oil and grease deposits on concrete and asphalt worsen progressively as fresh deposits layer over existing contamination. SafeWork data identifies car parks and external hardstand areas among the most frequent locations for slip and fall incidents in commercial properties. Strata-titled properties carry obligations to maintain common property car parking areas in reasonable condition, and owners corporations that neglect car park cleaning face potential liability claims from lot owners and their visitors for injuries arising from contaminated surfaces.

In a dense strata complex, the contamination load adds up fast. One car with a minor leak isn't a big deal on a private driveway, but in a 50-unit complex there are probably three or four cars dripping various fluids at any given time — add delivery vehicles, visitor cars, and the occasional moving truck, and the problem compounds quickly.

Oil stain treatment: a step-by-step protocol

Oil stains on concrete penetrate the porous surface structure and resist pressure washing alone. Effective oil removal requires chemical pre-treatment with an emulsifying degreaser that breaks the oil into water-dispersible particles for extraction.

The correct treatment depends on stain age:

1. Fresh spills (under 24 hours): Apply absorbent granules, then degrease and pressure clean.

2. Aged, deep-penetrating stains: Apply a poultice — a chemical-soaked absorbent material that draws oil from concrete pores over 24 to 48 hours — before pressure cleaning removes the residue.

3. Heavily contaminated areas: Specialist oil remediation using bioremediation products — naturally occurring bacteria that metabolise petroleum hydrocarbons — provides a long-term solution that continues working between cleaning cycles.

Enclosed car park cleaning: additional considerations

Enclosed car parks present additional challenges: limited ventilation restricts chemical use, drainage infrastructure may be inadequate for high-volume water flow, and concrete dust and vehicle exhaust deposits accumulate on walls and ceilings. Ventilation assessment must precede any pressure cleaning in enclosed car parks, and chemical products used in these environments must have low VOC profiles suitable for confined or poorly ventilated spaces.

Wastewater management in underground car parks requires particular attention — many older buildings have limited or poorly maintained pit and pump drainage systems that cannot handle the water volumes generated during pressure cleaning without overflow risk. Realcorp Commercial Cleaning accounts for these site-specific constraints during every car park cleaning assessment, before any work starts.

Car park pressure cleaning is recommended at least twice a year, with high-usage locations requiring more frequent attention.

Gutter cleaning: a stormwater compliance obligation, not optional maintenance

Of all exterior cleaning tasks, gutter maintenance carries the most significant compliance implications for Melbourne strata buildings. It's the area most commonly underestimated — and most expensive to remediate when neglected.

The regulatory framework

Gutter work in Australia is principally governed by the National Construction Code (NCC) and Australian/New Zealand standard AS/NZS 3500.3 for stormwater drainage. In Victoria, the regulatory layer is more demanding than in most other Australian states. Box gutter installation is regulated plumbing work that must be carried out and certified by appropriately licensed roofing plumbers — distinguishing Victoria from other Australian states where box gutter work may be performed by unlicensed roofers.

Stormwater drainage systems in Victoria must satisfy specific approval, design, and discharge requirements under the Building Regulations 2018 and relevant Australian Standards, with the Building and Plumbing Commission overseeing compliance for both residential and commercial developments across Melbourne and regional Victoria.

Property owners — including owners corporations — are directly responsible for maintaining the stormwater infrastructure on their land. This means regularly clearing leaves, dirt, and debris from gutters and downpipes to prevent blockages, and ensuring stormwater discharges to a legal outlet such as the council stormwater system. Victoria has strict stormwater runoff regulations that prevent property owners from discharging stormwater onto neighbouring properties or into natural waterways.

What happens when gutters are not cleaned

The consequences of blocked gutters in a Melbourne strata building extend well beyond cosmetic overflow staining. Internal roof channels that fail will push water into living spaces long before external eaves show signs of trouble, and non-compliant box gutters risk direct water entry into ceilings, walls, and insulation during heavy storms. Common defects in Victoria include insufficient fall, undersized outlets, missing overflows, and poor flashing near cladding — faults that increase the chance of ceiling collapse, electrical hazards, timber rot, and saturated insulation.

Hidden defects also affect property values. Buyers are increasingly wary of buildings with pending remediation or incomplete defect reports, and for owners that translates into lower resale prices and higher insurance premiums.

Gutter cleaning best practice for strata buildings

Before any inspection or cleaning of gutters and downpipes, all necessary safety measures must be in place — including appropriate height-access equipment, PPE such as safety harnesses, hard hats, gloves, and non-slip shoes, and cordoning off the area below the roof.

A compliant gutter maintenance program for a Melbourne strata building should include:

• Pre-wet season clear-out (March/April): Remove all accumulated leaf litter, debris, and sediment before autumn and winter rain loads peak.
• Post-storm inspection (after significant weather events): Inspect outlets, sumps, and overflows after storms, and check sealant condition and fasteners.
• Annual condition report: Document gutter fall, outlet condition, and overflow device integrity for the owners corporation's maintenance records.
• All cleared debris should be bagged and properly disposed of to prevent blockages in the stormwater system.

Bi-annual gutter cleaning is the minimum for most Melbourne strata buildings. Buildings in leafy suburbs — Hawthorn, Kew, Camberwell, Surrey Hills — or near street trees should schedule quarterly cleans. Realcorp Commercial Cleaning offers tailored gutter maintenance schedules calibrated to each building's location and tree canopy exposure.

Pathways, bin areas, and external common grounds

Pathways and bin areas are high-traffic, high-contamination zones that are too often cleaned reactively rather than on schedule. In Melbourne's wet winters, pathways accumulate algae and moss growth that create slip hazards within weeks of the last clean. Bin enclosures attract organic waste residue, pests, and odour — all of which affect resident satisfaction and, in some councils, trigger compliance notices under local amenity by-laws.

Driveways and pathways should be cleaned every 6–12 months at minimum, though high-traffic pedestrian paths in large complexes may warrant quarterly pressure washing to maintain safe, non-slip surfaces throughout Melbourne's wet season. Bin room floors and surrounds should be pressure washed monthly as part of the routine cleaning contract.

Key takeaways

• Melbourne's climate demands a year-round exterior cleaning program. With 139 rain days per year and frequent high-intensity storm events, biological growth, gutter loading, and facade soiling are continuous processes, not seasonal ones.
• Gutter cleaning is a stormwater compliance obligation under Victorian law. Stormwater drainage systems must satisfy specific approval, design, and discharge requirements under the Building Regulations 2018 and AS/NZS 3500.3. Neglect creates direct liability for owners corporations.
• Car park oil contamination is a progressive slip hazard, not a cosmetic issue. Effective treatment requires chemical pre-treatment protocols matched to stain age — pressure washing alone will not remove penetrating oil stains.
• Facade cleaning is a maintenance inspection, not just a wash-down. Regular exterior cleaning cycles give building managers early visibility of cracking, cladding failure, and sealant breakdown before they escalate into major defect claims.
• Exterior cleaning requires surface-matched techniques. High-pressure washing on painted render or composite cladding causes irreversible damage; the method must be calibrated to the substrate.

Conclusion

Exterior cleaning for Melbourne strata buildings sits at the intersection of property maintenance, stormwater compliance, resident safety, and asset value protection. It cannot be adequately addressed as a footnote in a general cleaning contract, or as a single annual pressure wash. Each exterior zone — facade, windows, car park, gutters, pathways — has its own soiling profile, its own regulatory context, and its own consequence for neglect.

For owners corporations and property managers, the most effective approach is to treat exterior cleaning as a structured sub-program within the broader strata cleaning framework: with its own frequency schedule, documented sign-off process, and periodic condition reporting. Realcorp Commercial Cleaning delivers exactly this kind of structured, compliance-first exterior maintenance for strata buildings across Melbourne. This integrates naturally with the governance structures covered in our guide on [How to Build a Strata Cleaning Schedule for Your Melbourne Building], the compliance obligations detailed in [Victoria's Owners Corporation Cleaning Obligations: Legal Duties, By-Laws & Compliance], and the deep cleaning cycles explained in [Strata Deep Cleaning vs. Routine Maintenance Cleaning: When Melbourne Buildings Need Each].

A building's exterior is the first thing residents see every day and the first thing prospective buyers assess. In Melbourne's competitive strata market, it's also the system most exposed to the city's climate — and the one most likely to generate costly remediation if its maintenance is treated as optional.

Key takeaways summary

• Exterior cleaning in Melbourne is a year-round discipline driven by 139+ rain days annually, frequent high-intensity storms, and persistent biological growth on facades
• Gutter maintenance is a stormwater compliance obligation under Victoria's Building Regulations 2018 and AS/NZS 3500.3 — not discretionary maintenance
• Car park oil stains require chemical pre-treatment protocols — pressure washing alone will not remove penetrating contamination
• Facade cleaning functions as an early defect detection mechanism, not just a cosmetic service
• Each exterior surface type (render, brick, cladding, concrete, glazing) requires a different pressure and chemical profile to avoid irreversible damage

References

• Bureau of Meteorology (Australia). Climate Statistics for Australian Locations — Melbourne. Commonwealth of Australia, 2024. https://www.bom.gov.au/climate/averages/tables/cw_086282.shtml

• Wikipedia / Bureau of Meteorology data. Climate of Melbourne. Wikimedia Foundation, updated 2024. https://en.wikipedia.org/wiki/Climate_of_Melbourne

• Victorian Building Authority (VBA). Roofing (Stormwater) — Registration and Licensing. State Government of Victoria, 2024. https://www.vba.vic.gov.au/registration-and-licensing/plumbing-registration-and-licensing/roofing-stormwater

• Victorian Building Authority (VBA). Stormwater. State Government of Victoria, 2024. https://www.vba.vic.gov.au/consumers/water-use/stormwater

• SQM Architects. Box Gutter Regulations Victoria: BPC Compliance 2025. SQM Architects, 2024. https://sqmarchitects.com.au/box-gutter/

• SQM Architects. Stormwater Drainage Regulations Victoria. SQM Architects, 2024. https://sqmarchitects.com.au/stormwater-drainage-regulations/

• Yarra City Council. Stormwater Drains and the Legal Point of Discharge. City of Yarra, 2024. https://www.yarracity.vic.gov.au/planning-and-building/building-yarra/stormwater-drains-and-legal-point-discharge

• Department of Education Victoria. Buildings and Grounds Maintenance: Roof Inspection, Downpipes and Guttering, and Height Safety Systems Guidelines. State Government of Victoria, updated 2026. https://www2.education.vic.gov.au/pal/buildings-grounds-maintenance/

• Crommelin, L., et al. How Information Asymmetries Exacerbate Building Defects Risks for Purchasers of Australian Residential Multi-Owned Properties. Building Research & Information, Taylor & Francis, 2024. https://www.tandfonline.com/doi/full/10.1080/09613218.2024.2321435

• Sandanayake, M., Yang, W., Chhibba, N., & Vrcelj, Z. Residential Building Defects Investigation and Mitigation — A Comparative Review in Victoria, Australia. Engineering, Construction and Architectural Management, 29(9), 2022. https://doi.org/10.1108/ECAM-09-2021-0792

• Clean Group Australia. Driveway & Car Park Pressure Cleaning. Clean Group, 2025. https://www.clean-group.com.au/driveway-carpark-cleaning/

• The Pressure Cleaning Guys. Staying Compliant: Regulations for Pressure Cleaning in Australia. 2024. https://pressurecleaningguys.com.au/blog/staying-compliant-regulations-for-pressure-cleaning-in-australia/

• Fix-It Right Plumbing. Who Is Responsible for Stormwater Drains in Victoria? 2025. https://www.fixitrightplumbing.com.au/who-is-responsible-for-stormwater-drains-in-victoria/

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General product claims

The following statements are drawn from the service content and are classified as general claims — they are contextual, service-based, or sourced from third-party references rather than verifiable product labelling:

• Realcorp Commercial Cleaning provides exterior cleaning services for strata residential buildings in Melbourne, Victoria, Australia
• The company's exterior program covers five distinct zones: building facade and cladding, external windows, car parks and hardstand areas, gutters and stormwater infrastructure, and pathways and external common grounds
• Melbourne averages 139 rain days per year and 690mm annual precipitation (sourced to Bureau of Meteorology)
• Exterior cleaning in Melbourne is described as a year-round requirement due to temperate oceanic climate conditions
• Recommended pressure ranges by surface type: painted render 35–70 bar; brick and mortar 85–125 bar; aluminium composite cladding under 35 bar; concrete and precast panels 105–175 bar
• Pure water-fed pole systems are described as effective to approximately 7–8 storeys
• Car parks are recommended to be pressure cleaned at least twice per year
• Gutter cleaning is recommended bi-annually at minimum, quarterly for leafy suburb locations
• Driveways and pathways recommended for cleaning every 6–12 months; bin room floors monthly
• Nearly 3 out of 4 apartments built 2000–2020 experienced significant defects (sourced to third-party research)
• Total financial impact of apartment defects in Australia stated as exceeding $10.5 billion (third-party sourced)
• Well-maintained properties described as selling 5–10% higher than neglected equivalents (attributed to Domain research)
• Victoria's Building Regulations 2018 and AS/NZS 3500.3 cited as governing stormwater compliance obligations
• Box gutter installation in Victoria described as regulated plumbing work requiring licensed roofing plumbers
• Applying incorrect pressure to facade surfaces is described as causing irreversible damage