Flooding – The Secondary Effects

Flooding is something we’ve recently experienced on a scale that really hasn’t been seen before.

I’m not a scientist or meteorologist, but experts say this is due to either or both La Niña and climate change. 

Flooding – the Primary Effects

Primarily, flooding is going to result in mould issues. Mould is a moisture issue and with the abundance of moisture (rain, on the ground and the high levels of relative humidity), we’re seeing a perfect storm brewing for mould and microbial activity.

The focus of today’s post is the secondary effects.

So, I’ll leave the topic of mould here, with the following pointers:

  • Anything that’s been wet for more than 48 hours can create the opportunity for mould and microbial activity
  • Porous materials that have been wet, need to be replaced
  • Semi- and non-porous materials can be saved, but need to be addressed by the appropriate professionals (those who’ve trained with IICRC and have achieved the Mould Remediation accreditation)

If you want to learn more about dealing with mould, I have a course by that very name – you can check it out here.

As well, we need to keep asbestos, lead and pesticides top of mind – and use PPE where appropriate.

The Secondary Effects of Flooding

Secondary effects are those that come after the immediate cause >> effect. For these, we’ll start more broadly and then narrow it down to our homes and buildings.

Landslides

With all the moisture in the soil, it is possible to have landslides. 

Local councils (in Australia) apply different overlays to areas – check with yours to see if you have a landslide overlay on your property.

Falling Trees and Branches

All that water in the soil can loosen tree roots and result in them falling. 

As well, the flooding may have killed some trees, and as a result, the trees or their branches can fall.

Obviously, this can result in damage to property or people and animals.

Mosquitoes

Mosquitoes (or “mossies” as we call them here in Australia) are able to carry diseases. 

Apart from that, if you’re like me, you get huge red welts from any bites! (Personal experience has taught me not to scratch!)

It is best not to get bitten – so keeping them out is preferred. Here are some ideas to help with that.

  • This is as simple as installing fly screens over windows and doors
  • Mossie zappers can be useful (installed, hanging or even the “table tennis” racquet style [which you can get from camping stores])
  • If you choose to apply mossie repellents to your skin, choose a natural one, if you can
    • You can check out www.ChemFreeCom.com for some safer, local options
    • www.EWG.org will also list options, however, I’ve found that these are often not available in Australia (and I don't recommend purchasing these types of items online from overseas as they may not meet our safety standards)
    • I’m going to bring back my essential oil based Bug Repellent (contact me if you're interested)
  • If you opt for a non-natural option, apply an oil-based moisturiser on your skin first, so the repellent sits on the surface of your skin (and is also easier to wash of)
  • Another way to use the non-natural option is to spray it onto clothing, instead of your skin
  • DIY – make your own with essential oils, such as tea tree, rosemary, eucalyptus blue mallee, and lavender. You can mix them up in water and spray them on your clothes/skin and reapply every 2-3 hours
Flooding - The Secondary Effects- landslides, fallen trees, mosquitoes

Termites

We can expect some pretty big issues with termites with the high levels of moisture.

According to Professor Dieter Hochuli, Integrative Ecology Group at the University of Sydney,

“It’s going to be a massive year for termites as the high levels of soil moisture are ideal for them to burrow and flourish” (ABC News, 31 Oct 22). 

A bit like house dust mites, termites thrive in moist conditions.

Termites are attracted by the moisture then go in search of food – wood. 

Here are some things to do.

  • Clear away wood (fallen branches, sleepers, wood piles) from around your home and property
  • Keep things as dry as you can
  • Be vigilant – keep an eye on your building, including the subfloor. If you’ve got termite caps at the top of your stumps, then you should be able to spot their activity easily. 
  • Have your home inspected
  • Termite traps can be useful around your property, too

Cockroaches and Rodents

Cockroaches and rodents (rats and mice), as well as other pests are likely to increase, particularly as the weather warms up.

Some actions that you can take are:

  • Installing fly screens on windows and doors
  • Keep your home clean
  • Clean up food scraps and mess
  • Ensure your bins close properly
  • If you’ve got a compost bin, keep it away from the home
  • If you’ve got chooks, look into getting a feeder that doesn’t spill their food around
  • Keep pet food (and your own) in sealed containers
Flooding - The Secondary Effects - rodents, termites, cockroaches

Other Steps You Can Take To Reduce the Secondary (and Tertiary) Effects of Flooding

  • Keep an eye on the relative humidity levels – these should be between 40-60%. A hygrometer is handy for this.
  • Use a dehumidifier to reduce the humidity levels.
  • Clean up any spills, leaks or water (or other forms of moisture).
  • Oregano and Thyme essential oils can be helpful in killing mould as you clean.
  • Keep your home clean from food (cockroaches and rodents love this) and dust (house dust mites love this).
  • Ventilate your home as much as possible – open doors and windows to exchange the air.
  • Read more –

There are many after effects of flooding – apart from the obvious ones. And these secondary effects can also be devastating. Please give these tips a go to protect your health, and that of your home.

Stay safe!

Mould Busting 3 Common Myths cover

Have you been bamboozled by all the information (and misinformation) about mould?

This Creating a Healthy Home Guide exposes 3 common myths about mould so that you can be empowered to deal with it effectively.

Download your FREE copy of Mould: Busting 3 Common Myths here.

How to Avoid Renovation Health Hazards

How to Avoid Renovation Health Hazards

Applying a little foresight and forward planning can help to prevent renovation health hazards. Through the past decade, I have found that many of my clients have experienced health issues due to factors in their homes, I call these hidden hazards.

In order to equip you with information and strategies while renovating your home, I am going to share with you 5 of the common hazards… and give you strategies on how you can tackle them safely and effectively.

Mould

I'd say mould is a “complex beast.” Here are some key points in a nutshell:

    • Ultimately, mould is a moisture issue. If there’s mould, there has been moisture. Conversely, if something is wet for long enough (48 hours) you can have mould.
    • There are over 100,000 different types of mould, it comes in many colours and has many different moisture requirements.
    • It’s a myth that mould only grows in cold, dark places. Mould spores are present everywhere and can become active when there is enough moisture present.
    • Mould can be actively growing, yet be invisible and/or have no odour.
    • It’s also a myth that only mould that is black can cause problems to health.
    • Not everyone reacts the same way to mould. People can be allergic to it, or become sensitised over time. Others may have an immune system that can deal with it without them even realising it!
    • Mould can grow in all sorts of places – even in areas that you can’t see.

The biggest factor when it comes to renovation health risks is that any time you disturb mould, it releases spores. This means any changes to moisture levels, light, temperature, air movement, as well as physically disturbing it, can result in mould releasing spores.

Keep your eyes peeled for any signs of water, mould or damage: wood with “wood rot” (a.k.a. “water damage”), a “high tide mark” in the subfloor and on the stumps, brown stains (typically on ceilings and walls), paintwork that is peeling, cracked or bubbling, and swollen wood (door jambs, cabinetry, kickboards). 

If you spot any of these, get in touch so I can advise on how to best manage the situation.

Asbestos 

Asbestos is a material that most of us have heard of. I am sure you also know of the health risks, like mesothelioma that can result from asbestos exposure.

However, it is important to know that asbestos does not pose any health risk if it isn’t damaged or disturbed. Which means, you can live in a 1950s home and have no asbestos-related issues if you don’t make holes in the walls or renovate. This is great news – except if you do want to renovate.

Here are some facts about asbestos.

    • It’s strong, heat resistant and durable
    • It was used in a vast range of materials for many decades,
    • The peak usage of asbestos was 1950s-1970s,
    • Asbestos was banned in 2003, and
    • It is impossible to know if a material contains asbestos simply by looking at it.

Apart from “Hardie Boards”, cement-lined asbestos pipes and roof tiles, asbestos was used in electrical cable casing (this is the braided one), window sashes on hung windows, slagging, old laundry tubs, carpet underlays, tiles, bakelite materials and so many other materials.

If your home was built before 2003 and you are planning on a renovation, engage a licensed asbestos inspector to conduct a “demolition survey.”

Lead 

Lead has also been widely used in a number of products, and was only phased out from use in paint as recently as 2010. Whilst leaded paint, like asbestos, when it isn’t disturbed poses little risk – if it is sanded or peeling, it can be particularly hazardous to health.

There are often no symptoms of lead poisoning for some years – and common long term effects of lead poisoning include loss of libido, reduced sperm count, lowered IQ, Alzheimer's Disease, hearing loss, joint pain, stroke, and has been linked to many “diseases of ageing.”

Lead can be present in our homes in paint, solder, flashing (which can get into tank water), lead dust (from busy roads and industry) which can get into the soil or roof space, and even lead lighting.

What is important to know with lead is that the “spot tests” that you can get at hardware stores are extremely unreliable. It is for this reason that they are not something that I recommend. Instead, you can get samples analysed by an accredited laboratory. 

If you suspect lead might be present then take extra care:

    • wear a respirator,
    • gloves and coveralls,
    • avoid dry sanding,
    • avoid removing paint with heat guns,
    • manage the dust to prevent secondary contamination, and of course,
    • keep pets, pregnant women, young children and the elderly away from areas being renovated.

For more information on lead, a top resource is LeadSafeWorld.

renovation health risks

Dust

Dust is certainly something you can certainly expect in any renovation. 

But is dust safe?

I always err on the side of caution, and I would say, “no.” Better safe than sorry, right?

Dust can contain allergens such as house dust mites and pollen, but also lead and other heavy metals, asbestos, pesticides and herbicides (such as glyphosate), rodents, faeces, dander, frass and more.

Two places where dust pose the biggest risks are carpets and the roof space.

Any time you are doing anything involving the ceiling or roof space be sure to have the dust removed prior. This could be installing insulation to cutting out a piece to installing downlights, and so on.

You can find specialists in dust removal at Australian Dust Removal Association.

For carpets, I recommend that you spray them down with water, cut them into strips, roll each strip, wrap in a tarp and take it out to the skip. This will prevent dust becoming airborne as well as reduce the risk of spreading it through other parts of your home.

And of course, personal protective equipment is always recommended!

Plan Ahead and Avoid Renovation Health Hazards

Whilst we know how easy it is to get swept up in the vision and planning… However, you are now armed with important information to protect yourself and your family from the most common renovation health hazards. 

If you’d like advice on your particular situation, please book a call with me.