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Brunswick Greenheat Panel Project: by Hydrotherm Hydronic Heating

Michellina Van Loder is a Professional Writer, Journalist and Blogger. This is where she shares her tales about trail blazing her way out of the Labyrinth of Chemical Sensitivities and Mould. This is also where you will find the latest Research on related topics.

Barwon Mould Remediation Help Save our Build. Twice. Part I

So far, the Eco-friendly, Allergy-free House project has been through 2 winters; the first winter, in 2016, before full external lock-up, almost completely disabled, laid flat with exhaustion and headaches, I was living/existing in one of those mouldy rentals from hell; we were behind time with the build; so many things haven’t gone as planned; however, disasters have been averted, and for that I’m grateful. Over the last year, to be almost exact, I’ve been onsite, pottering away in the eco-friendly, allergy free house, without mould symptoms. Soaking up the sun’s rays while indoors; often thinking about one thing: mould. The house has been at a standstill while the outside is prepared: concrete etc. to keep the build clean while indoor work happens. This is what happened leading up to stage 3, where we’re at now:

Keeping my eye on the weather:  we wrapped the top floor of our house in plastic to stop water coming in. We had wrapped the house in Kingspan, a breathable wrap that also acts as a light thermal break.

Plastic used was the water barrier type

Plastic used was the water barrier type

The plastic worked for two storms that pelted the house with relentless rain until, along with strong winds, water came pouring in off the whole western side of plastic wrap as it flapped its way in and out on stormy winds, wetting the concrete and the adjoining floor-level hardwood house frame. It had to be dried and cleaned up, pronto. I thought that would be it, because I aired religiously, had heaters and fans running but when I saw grey fur growing up the wall in the bathroom, which was confirmed by our remediater, Darin, from Barwon Restoration Services.  It gave me such a fright to see mould in the build like that. I pictured myself living in my car… Then took immediate action:

When Barwon Restoration Services came over to give us a free quote, Darin, said our house was by far one of the least damaged buildings he’d seen that winter and one of the cleanest, and that:

“Buildings that sit unfinished over winter can have huge mould problems.”

Darin explained that as the weather turned to August, and mould grew on hardwood of the bathroom, it, being as thin as plywood, and on the north side, the moisture within the building must have been absorbed, and unable to dry, and then, once the weather reached 22c plus, mould grew.


Mould grew fast, and under perfect conditions

It happened so fast, it seemed. (Approximately ten days after water entry. And that mould grew over just 3 days, turning black before we even managed to change it! (I was checking and airing the house on most days, what, with all that rain.) With Darin’s advice, Dan replaced the materials that had mould on them, leaving the bathroom looking clean once again. But was it?

HouseUSBathroom2016-08-14 12.02.04 HDR

The bathroom with hardwood materials removed and replaced, rather than an attempt at cleaning them

In my view, it would have been impossible to clean mould that was half way into the wood.

Each area of the house, a biological reading was taken: it was cheaper than a mould test.


Moisture reader. This is the reading of the corner-but window’s reveal (not water-damaged) that looked the worst, yet it was still low compared to water-damaged areas.

Any area that was black and gave a reading was replaced. Areas that appeared clean but gave a reading were cleaned. Areas of moisture concern were dried out using fans and heaters. We replaced around 12 pieces of wood. And went through so many cleaning rags, 3 vacuums (1 was stolen) 4 bottles of dishwashing liquid and some peroxide in particular areas.

The Clean Up

The mould clean up began. Even Darin said that if I didn’t have such a sensitivity to mould, it would be overkill for most people. More importantly, to me though, what if it wasn’t? Lol, and I thought I was losing my mind over mould then. (It felt like impending disaster.) Oh, and then Dan bought a bottle of Concrobium from Bunnings, cause you know, we all want a product that will just magically make it disappear; it was recommended not to use it based on the idea that the remediation company never used biocides with occupants who have compromised immune systems. The Concrobium went in the bin. Close call, there!

Early on, Darin had been most receptive of the Shoemaker research, doctor’s letters and my explanation of what mould had done to my life and the lengths I now had to go to avoid it. Thankfully, he understood that I wouldn’t be able to live there if mould took over the house. Dan would have an investment but I’d have no home! Between the three of us, we worked out a remediation clean up that wouldn’t make me sick:

Dan and I suited up and did the clean up ourselves. Our only mistake was not taping around the edge of the cuffs of the tyvek suits and Hunter boots, and double set of nitrile gloves, but other than that, we masked up and did alright!:


Breaking Mould

We didn’t even use Barwon Restoration Service‘s products, instead, based on their advice, using our dishwashing liquid; a particular percentage of peroxide; a huge bag of white throw away rags from Costco; and more dishwashing liquid for the wipe up of the whole upstairs, instead, paying attention to the bathroom and other immediate areas.

It’s a dangerous thing, dead mould.

Peroxide is dangerous too, because dead spores break up into fragments, can become embedded in your belongings, and, given the right, moist environment, can possibly desecrate your life. We then used sabco cloths and a HEPA vacuum to clean up any remaining spores.

(This is a true story; it’s happened to myself and many others who either have faulty HLA’s (human leukocyte antigens) and/or have lived in a water damaged building (WDB).

For education’s sake, my HLA’s are 4, 7, 2 and 8, which, using the Australian version of  ‘My House Makes me Sick HLA calculator‘ and the results of my blood test, computes to this:

4-3-53 – Multisusceptible/Chronic Fatigue

7-2-53 – Mold Susceptible

7-3-53 – Mold Susceptible). 

Had I have known that this was only the first of many clean ups to come, I’d have thrown myself on the floor, curling up into foetal position, hands over my eyes so I couldn’t see the HEPA vacuum looking back at me. This was the 2nd and the last mould clean up I took part in. Spraying peroxide and wiping each area with only one wipe of a clean cloth, then another one with straight up detergent was a royal pain in the backside. However, we were able to save money doing this part ourselves. The reason I refuse to do it again is I now know how sick mould can make me.

We used air washing, using cross-ventilation and sea winds to clear the house in the coming weeks.

Feeling a bit like a superhero with a biology degree in mould, through the build, I was able to purchase a water reader for around $80, very basic; and a thermal imaging camera. I spent many hours at the house, checking for air leaks where water vapour could get through, or worse, water… I lost sleep over the build everytime it rained, unless I was there. So I went and stayed there, spending many nights checking for water entry when it was raining, I thought I was going nuts, so it was good to get biological readings on any suspect timber over the next few months. Finally, it was at lock up and all windows and doors were flashed, keyed and securely in.

A clean build is a safe build

A clean build is a safe build. So is one that’s at lock up!

Mould Entry no.2

It was September 2016, nearly a year ago.

Come November, one morning, after sleeping there during wet weather—yet again—I did my usual rounds, clattering ladder  behind me, moisture reader and thermal imager in the front pocket of my overalls. To my horror, one of the hardwood window ledges had a pool of water on it. No moisture reader needed! I couldn’t believe my eyes. This area faced south; where the heavy rain and south westerlies come in.

window leak

(Our UPVC (the ‘u’ stands for ‘un-plasticised’) windows were made in Germany but when they arrived, one window didn’t quite fit, so we had one from an Australian company placed into that space. It looked the same. Until it leaked.) It took a few weeks to get the window removed so the area could be remediated. I think I counted the minutes of those few weeks.

We had to prove where the water was coming in so they could take responsibility. That’s the thing when working on a house yourself, if something goes wrong, you need to trace it back to the person responsible and everyone says it’s everyone else’s fault. We didn’t know if it was the flashing, the structure of the timber or the window itself. The thermal imaging camera gave the answer to that question: the thermally-broken chamber was taking in and holding water, which then leaked out slowly into the building via the window reveal:


Once again on advice from our remediatior, we waited until just before sundown, when the temperature drops outside, leaving any trapped water within the building envlope at a higher temperature.

2016-10-22 23.16.06-1

Image taken after another rainy night. This time the chamber is full on the left. It would leak out slowly onto the wooden reveal

The inside of a window’s thermally broken chamber looks like this:

A piece of thermally broken window frame used for testing

A piece of thermally-broken UPVC window frame, used to test for suitability

(Image is not the brand that leaked, rather the one I’d tested for suitability early on in the planning stages.)

One wrong product or chemical used in the build could make it unlivable. Mould, impossibly so.

Once it was established how the water was getting in and who was responsible, the window was removed. By then it looked like this:

WindowFail2016-10-26 19.45.24

The mould that was visible was not half as worrysome as the mould that couldn’t be seen

During remediation, the above area was sanded back. To replace the materials, it was a matter of pulling apart the outside wall of the house. Darin came over and promptly sealed off the area using Grunt plastic. But not before he generously assisted Dan in boarding up the hole in the south facing wall: the area needed to be as air tight as possible for the pressurised room where the window had leaked. It was only a little mould. Should be fine being only small amount, right? We all thought so.

HouseMouldRemediation2016-10-28 20.44.05

This room has been wrapped, pressurised and set up with a HEPA air scrubber, ready for cleaning

Also of concern: The hardwood reveal in the corner-but window (next to the above window) had black dots all over it. Due to my recent CIRS diagnosis, we needed to know if it was mould: it gave a reading of 180. Anything over 60-80 wasn’t good. Rather than clean that area, we opted to replace that piece of hardwood also. This way, it was a sure thing! Better to be safe than sorry, and we were on a budget: a mould test wasn’t out of budget but we did have to chose where to spend money: materials and HEPA scrubbers or testing and remediation of materials and HEPA scrubbers?

After the room was remediated, cleaned and I’d stayed away for a few weeks, I returned and all was fine. I was symptom free. The window reveal had been painted in clear Safecoat. (I did, however, return the night the air scrubbers were cleaning the house. I would have to say that was the most intense mould reaction I’ve ever had. And I got it walking into the property, from the front yard. The air being expelled from the house was blown in my face by the wind. My face and hands felt like they were on fire. I actually thought the house was sure to be ruined considering the reaction of my skin!)

However, a few months later, I noticed the paint was bubbling up. This meant there was moisture, possibly mould, in the wood. Still! All other reveals were fine. Our indoor remediation had not been for nothing: it was an important learning experience: it’s better to the replace mouldy materials than remediate them, where possible.

Darin: 0498 777 131
John: 0412 777 193

Next, in Part II: Our back deck, shockingly, needs remediation: we have to replace our whole back deck after the hardwood supporting beams are now black with mould—as is the MgO board, which was yet to be sealed or waterproofed.

2016-09-24 09.52.44

Note how the back of the house is sealed with plastic. It’s called ‘containment’


Toxic Mould Support Australia: Remove, Don’t Kill Mould – Part 1 – Building Materials

Michellina Van Loder is a Professional Writer, Journalist and Blogger. This is where she shares her tales about trail blazing her way out of the Labyrinth of Chemical Sensitivities and Mould. This is also where you will find the latest Research on related topics.

Hydrotherm Hydronic heating for our Eco-friendly, Allergy Free House (Part III)

Hydrotherm’s Rough in Process

It took two days to complete the ‘rough in’ process, the plumbers basically ran, from the Bosche boiler, 25 inch pink Rehau piping, into 20 down to 16 into the chrome copper, where it comes out the wall, where it meets chrome and brass pipes going into the walls and outside, ready for the boiler. The black pipe usually used for plumbing can’t be used with hydronic because it’s transparent; whereas, the pink is not. The pipe is insulated with black foam. Pink Noggins were put in so they have something to screw into when they come back for the ‘fit out’. That’s when the real stuff happens!

For now it’s been pressurised with most of the water the system will ever need.

Hydrotherm pressurising the hydronic heating system

In the next part of the fit out: After the hydronic heating panels are connected to the noggins, a central control panel is placed in the main living area. This is where the temperature can be set, on a timer, or automatically switched off once the house is warm enough: this is where the beauty of the system comes in: the water in the panels and pipes stays hot, aka free heating. They can run on both gas and electric. Ours has a Bosch boiler, which runs on gas and is installed outside, away from any opening windows—being gas and all. Don’t want that wafting through the windows, inside.

The panels can be painted in powder coat to match any of the Dulux colour range. It’s cheaper to go all white though. Although, to match the bright pink/red feature wall in my office, I’d love a fire-engine red panel; I’m still thinking about the $110 extra that it would cost, and how it wont fit into the project’s budget.

Our pipes were located at 1100mm off the ground.

And this is our boiler:

Download (PDF, 1.04MB)

Are they Mould Free?

In reality, there are no filters to change or clean, which means there’s no place for mould to grow: dust, mould’s main food source, cannot congregate. But what I like best about these heaters is the fact that once paid for—because of the installation, they do cost more than most heating systems upfront—they begin to pay for themselves as time goes on until eventually, you get your heating for free. Now, if you were to go solar, harnessing the sun’s energy, with one of those awesome Tesla batteries, you’d be off to a free start much sooner.

How to Clean the Panels

Just use a dust collecting cloth like Sabco or even use the dust brush on your vacuum. Pretty simple!

How do they guarantee it won’t leak?

Rehau fittings are 99.9% guaranteed not to leak.

Other Guarantees:

7 years on the panels; 7 years on the installation. The boiler is a five year guarantee. If something did leak, Hydrotherm would go back to the company and insurance would cover water damage–or the prevention of it, rather.

It’s a sealed system that doesn’t need replenishing. Only half a glass of condensation is released per year into the atmosphere. That half glass condensation is released into the building envelope over the course of a year. That’s it for adding moisture to the building.

Because our house is so well insulated with breathing walls, it shouldn’t be an issue.

Our First and Last stop was Hydrotherm

But we did get three quotes, Hydrotherm being the first and only showroom we went to. It was back in 2011, planning stage and my health declined from around that time so I wasn’t up to going to showrooms without going to the hassle of making fragrance free appointments.

Our Only Challenge on the Day, Solved by Hydrotherm 

The front, north facing (sunny side), has a room somewhat like an entrance room but it’s closed in, like an air-lock. There’s the front door, then, leading out into the house, is a glass wall made from a large window joined by a Zenit glass external ‘lift and slide, tilt and turn door‘ (I’ll show you these in detail later, in my 7 part window series)—used internally—to create a room that’s not only an air-lock but will be used to prevent unwanted mould exposures, chemical exposures and allergic reactions to items bought into the living spaces.). Everything stops right there before coming into the house. There will be no exposures in my home-to-be!

air lock front entrance room

Air lock front entrance room ~ or if you’re fragrance free you can use the middle door :)

We didn’t include a hydronic panel because it’s north-facing. We thought the sun would heat this room just fine. You see, based on ‘passive heating’ design where the north-facing windows are floor to ceiling, while the eaves come out 600 mm to block the higher-in-the-sky summer sun yet allowing in the lower-in-the-sky winter sun, it stays warm when it’s sunny even on a cold day. But what about those Melbourne days, weeks even, where we don’t have any sun? I mean this is a room where someone may have to change clothes before being allowed in to shower, if they are contaminated with fragrances, or, worse, mould… (Yeah, I know, better get some blinds, lol.)

build an eco-friendly house


It wasn’t really a problem, because even though there wasn’t room for a panel—it seemed, as the room has glass on three sides—and a wall to wall cupboard on one, where was there room?

One of the Hydrotherm crew phoned into the office with the specs of a small corner and we were fitted for a vertical panel heater like this one:

Why we used Hydrotherm

For us, the most difficult part was making sure all the materials were health friendly for myself—meaning that they are VOC, petrochemical and of course, mould free. Plus, I had to know exactly which chemicals would be used for installation, and if it were possible to use our chemicals, which we had tested for safety; but most of all, I needed the tradespeople to go fragrance-free (See first post on how to organise this.). Now, if that laundry list of wants is not long enough, we needed the best price! Hydrotherm came to the party! They beat other hydronic companies by up to half in one of the quotes, and were willing to match any cheaper price. Considering the panels are powder coated stainless steel metal and the towel racks (which act as bathroom heaters as well), chrome.

Towel rack and hydronic heater

Towel rack and hydronic heater

Download (PDF, 794KB)

A Clean Building Site is a Good Start to a Mould-free Home

Building a mould free home means that you must keep the wall cavities and floors dust and debris free. This way mould has been robbed of a food source, lessening the chance of it growing; and if the wall cavities and roof trusses are kept dry there will be no mould. When it came to any mess from our hydronic fit out, Hydrotherm cleaned up after the job. (This is not just a tradies job, it’s yours: a building site for a CIRS patient must be kept impeccably clean!)

Chemicals Used

We used ‘Sellys 3 in 1 Silicone’: very low VOC. However, when Hydrotherm come back we’ll have a better silicone, as far as being water-tight goes: Sikaflex. Just stay far away until it’s dry. And, as always, test for your own suitability on a clean piece of tile, left out overnight, then bought inside if you don’t have symptoms with it. I’m finding there are products I’m not good with wet but fine with once dry. And I’d rather a silicone that keeps water out, right? Plus we used mortar on the outside of any hole protruding through the building.

On instagram I posted about this Camel Rock Yoga mat Mandala in the back room, the retreat. Southside. All glass windows. Wicked view. Andrew, the manager from Hydrotherm Hydronic Heating, pointed out how this room could be used for Bikram, hot yoga. This is going to be a thing. Thanks, Andrew.

Hydrotherm Part I: Radiant Heat Fights Allergies with Hydrotherm Hydronic Heating

Hydrotherm Part II: Why Hydrotherm Hydronic Heating is a Breath of Fresh Air

Hydrotherm Part III: Hydrotherm Hydronic heating for our Eco-friendly, Allergy Free House

Hydrotherm Contact Details

Hydrotherm: Hydronic Heating

Greenheat: Hydronic Heating

Hydrotherm Instagram

Michellina Van Loder is a Professional Writer, Journalist and Blogger. This is where she shares her tales about trail blazing her way out of the Labyrinth of Chemical Sensitivities and Mould. This is also where you will find the latest Research on related topics.

Information, products and views presented by guest bloggers @The Labyrinth are not necessarily the same as those held by this blog's author, Michellina van Loder. Reviews are my own personal opinions (unless stated otherwise); and satire is used throughout personal posts. Any health topics discussed are not to be taken as medical advice. Seek out medical attention if needed and do your own research; however, you're welcome to use mine as a start.
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