Common Structural Defects to Buildings


An underlying moisture issue, such as improperly managed water vapour, plumbing issues, or water infiltration through faulty cladding, can be indicated by the growth of mould in buildings. Mould has been linked to detrimental effects on both the structural integrity of buildings and human health and amenities.

Fungi that feeds on plant and animal debris is known as mould. This can comprise furniture like carpet and drapes, books, and boxes, as well as building supplies like wood and gypsum plasterboard.

Mould reproduces by producing spores and thrives in moist, poorly ventilated environments.

Mould spores that are in the air are frequently seen in both indoor and outdoor settings. They could start to grow and spread inside when they settle on moist areas. It is not feasible to completely eradicate mould growth indoors; rather, managing the moisture source is the key to managing mould growth indoors.

In order to reduce interior moisture and stop the growth of mould, it is critical that your home has adequate ventilation.


When building or purchasing a home, it is easy to disregard the importance of insulation in the home. You couldn’t be more mistaken, though. For comfort, health, and energy efficiency at all seasons of the year, insulation is essential. It can help keep heat from overheating the house in the summer and enhance thermal comfort in the winter by delaying the passage of sound and heat.

Because many people are ignorant of the advantages of good insulation, many homes are underinsulated. Beyond that, though, various insulation requirements specific to Australia must be fulfilled for efficient and comfortable living.

The NCC is a body of building laws that governs Australian building design, construction, and operation. This code addresses the insulation requirements and energy efficiency specifications for various types of buildings.

R-value and U-value are used to measure the insulation requirements, which are dependent on the thermal performance of the materials used to create the house. A material’s U-value reveals its thermal transmittance, whereas its R-value reveals its thermal resistance. A material with a high R-value will typically have a low U-value.

You must adhere to the various insulation standards and criteria set forth by the NCC for each zone.


cracks to walls

It’s common to become alarmed if you notice any wall cracks. It goes without saying that you think your house needs extensive repairs and has structural problems. You see the house collapsing in front of your eyes. However, what if we told you that the majority of cracks are just the result of settlement rather than structural problems or building defects? For more information, see the Victorian Building Authority website.

There are several causes of cracks, some of which aren’t very serious. It can be the result of settling that occurs naturally after a house is built. If so, your home might be in perfect condition, with just a few small repairs needed to fix the cracks. Certain fractures can heal on their own with just a little patience.

It’s important to keep in mind not to get too worked up over little cracks. To familiarise yourself with the cracks in your property, use the information below:

Vertical Cracks

Where the wall meets the ceiling, are there any vertical structural fissures visible in the wall structure? This usually means that the foundation is beginning to settle. It does not foretell significant issues or a flaw in the structure. After construction, the foundation will settle and the cracks will stop.

Horizontal Cracks

Are there any cracks that angle 45 degrees and span the length of the walls? This can be a sign of serious foundation shifting, water damage, or structural issues. Horizontal cracks are often cause for concern, so you should get them corrected as soon as you see them

Diagonal Cracks

These cracks could potentially be concerning. They could point to subpar footing or slab work, endangering the structural integrity of the building. It is imperative to get professional treatment as soon as possible.
Stuck windows and doors: If the paint and hardware are in good condition but the windows and doors are stuck, this could be a sign of foundation problems. Because of a moving foundation, doors, windows, and walls sustain damage and bend. It’s not necessarily a terrible thing, though. There are times when there is minimal shifting and simple fixes.

Nail Pops

If we notice a lot of nail pops throughout the house, we’ll look for dried-out timber frames and drywall movement. This is also not the end of the world; it only needs some minor repairs.


Trees affecting building structures

Even though they are an important part of our surroundings, trees can also be the reason why structures collapse. Either indirect damage affecting the soil moisture levels or direct damage affecting the building’s structure are possible. Investigating the causes of the building damage is crucial since it allows for the planning of the appropriate course of action once the damage’s primary cause has been determined.

Examine a Few Crucial Details

Not every tree causes harm.
Following a downpour, certain soil types—like clay soil—can absorb a lot of water, leaving the ground heavy and sticky. They may also harden over the summer, causing the earth to shrink and crack.Because of subsidence, trees near your property may cause structural damage.

Many clay soils have the property of expanding in volume when wet and contracting when dry. Because clay soils have a significant propensity for shrinkage, they frequently result in structural damage.

Buildings with shallow foundations that are four stories or higher and were built before 1950 are particularly vulnerable.

Damage to Drains

Broken drains

Tree roots can occasionally cause havoc with stormwater and sewage pipelines. Tree roots have the ability to pull out subterranean plumbing, drawn to the dampness that collects around drains. The majority of the time, leaky pipes or damaged joints allow roots to enter the drainage system. Once inside, they spread quickly and may cause the drain to completely fail. However, a correctly placed and maintained pipe is almost impossible for tree roots to penetrate.

Physical Injury

Trees can cause damage to a property from both above and below. The tree branches harm the building’s gutters and roof. Structures constructed on clay soil are more vulnerable because summer temperatures can induce floor and wall fissures. They push these fissures that cause heaving throughout the winter months.

Cause and Control

Because clay soils often recuperate moisture after winter rains, the process of clay soil shrinkage reaches its peak during the summer, and it is commonly known as “seasonal soil moisture deficit.” These kinds of fractures most often appear near windows and doors, where movement of 5 to 10 mm is optimal to prevent cracks from forming. Long-term drought conditions can lead to a persistent soil moisture deficit if the conditions persist year after year. Heaving can occasionally result from cutting down trees on such soils.

Strong foundations will prevent roots from penetrating.

If we construct and maintain a drain properly, tree roots won’t be able to spread and damage them.


roof defects

The condition of your house’s roof affects its value and longevity.

Besides shielding the occupants from harm, the roof also protects the façade of the house.

Defective building roofs in Melbourne can lower a home’s value or compromise its structural integrity. You can learn the state of the roof and how to remedy it with a routine home inspection.

The integrity of the roof can be tested by a building inspector who is knowledgeable in Melbourne roofs. We advise paying for a yearly roof inspection because the inspector will search for significant issues and even predict when you could need a new roof.

What Constitutes a Roof?

Both an interior and an external structure make up your roof. The roof is composed of steel or wood on the inside.

Standard roofing materials like metal or tiles compose the visible portion, or the outside. As long as the roof’s external components are stable, the inside components of the roof stay intact. The following building roof faults in Melbourne could occur as soon as the external components sustain damage:

leaks of water
mould issues
deteriorated plaster
Defects in structure

We will thoroughly inspect both the interior and exterior roof components as part of the roof inspection. After that, you’ll get a comprehensive report outlining the state of the roof.


How Insufficient Site Drainage Affects Damage

If site drainage is an issue on your property, wet, soggy lawns are the least of your problems. You might be dealing with foundation or footing issues in addition to a soggy lawn. When soil around a foundation is continuously wet or water starts to collect around footings, the prolonged moisture content can erode foundations, harm footings, and cause structural damage. There are a number of problems that can contribute to poor site drainage, some of which may not be immediately obvious to the untrained eye.

For example, slopes might give your property visual appeal, but they can also cause water to sluice to the lowest point. Water retention in the soil for extended periods of time might occur depending on the availability of man-made drainage systems and the quality of the soil upon which your construction is built. Usually, adding ditches or even a subsurface drain can fix drainage problems brought on by slopes.

Another unanticipated source of site drainage problems is human traffic. Compaction during the construction of a home or commercial building might reduce the soil’s capacity to absorb water. Compacted soil loses even more absorbency over time due to foot traffic and vehicle presence.

Finding and Fixing Problems with Site Drainage

Even individuals without building trade knowledge can easily discern that there might be a problem if your property still has standing puddles long after the rain has stopped. The most dangerous site drainage problems for footings and building foundations are the ones that are harder to see. Drainage issues might not even be noticeable to property owners contemplating a new construction project until the structure is built.

Here’s where having a qualified construction inspector on hand might be quite helpful. A professional building inspector has no financial interest in the conclusions of their report, in contrast to builders and landscaping experts, who have a financial incentive to discover issues with site drainage on your property. By identifying and resolving site drainage issues before they become an expensive and challenging problem to fix, working with a professional building inspection company can help you avoid danger to footings and damage to foundations, whether you’re getting ready to start a new construction project on your new property or are simply concerned about the quality of drainage on your existing site.

House Inspections are experienced professionals conducting pre purchase building inspections throughout Melbourne suburbs ,ring on 0450 632 867