We bought a double brick house that had some moisture under the floor, with a nasty musty smell developing in the bedroom. We did have pre purchase building inspection, that advice proved to be very disappointing with respect to the subfloor moisture problems.
The sub-floor space was restricted, so we arranged for a builder to crawl under the house, taking a number of photos, numbered according to a floor plan of the house. Lots of water very damp soil, with moisture seen on the terra cotta pipes under the 3 bathrooms – looked like the pipes were broken or blocked and leaking. Very disappointed that this was not included in the pre purchase building report.
Obviously we had to find and fix the source of the water, then improve sub-floor ventilation.
Drain experts diagnosed broken sewer and stormwater pipes, with quotes of up to $50,000 to repair and reline pipes. Glad I did not trust their advice.
Lucas, of Wild Water Plumbing inspected the sewer pipes, and reported they were OK, but that the heat exchanger HWS has 2 drain pipes that were not connected to lines, so were discharging water beside the house. Thank you Lucas for your honest advice.
I hooked up 2 drain lines to the HWS and ran the ends into buckets in the back yard, and was staggered to see the total amount of water produced, seemingly much more water than the large house A/C produced. For some years water had been dripping from the HWS so the ground had become saturated – the cause of all the damp soil seen under the house in the photos.
So source of water identified and rectified – now to the sub-floor ventilation.
Subfloor ventilation firms quoted around $7,000 to remove the damp. But neither mentioned the complex but ineffective ducted fan system installed by the previous owner. So I lost faith in those 2 firms.
I Googled sub-floor ventilation and found Envirofan, and was impressed with their informative articles and videos.
I contacted Christine with a multitude of questions, all of which were answered comprehensively.
We chose the aluminium heritage vent, which looks even better installed.
Our final installation was for 10 fans – as a double brick house air flow under the house is very restricted, so we had to knock small passageways into each room’s subfloor perimeter to allow air to flow into that room and out via the fans. We used 3 large transformers and extra heavy duty garden 12 V garden light wire for the long runs under the house to the fans. Our final budget of time materials and fans was much less than the $7,000 quoted, with a far superior look and performance.
We used Holman Garden Lighting connection 3 way Tees so the actual connections to the fans and circuits were minimised – heat shrink wrap ensured water tight connections. Most connections were waterproof screwcap type on the Holman garden lighting system. The garden lighting wire and connectors are designed to be buried in the garden, so ideal for sub floor fans.
The final result performs magnificently, and the sub-floor is now dry. The system is on a time clock, so a few hours a day running time is more than adequate to keep the sub-floor very dry. The musty smell is now gone.
I don’t think I am an easy mark, but the first four firms – plumbing and ventilation – were really conning me with their advice and their quotes.
So finding Lukas of Wild Water Plumbing, and Christine at Envirofan, who are both fair dinkum and trustworthy folk, it was a great relief.
I have had to dismantle one of the Envirofans to adjust it to mate up with the existing system, and was impressed with the quality of the components, and elegance of design.
The cast aluminium vents are of exceptional quality, we had to trim one edge to fit under brick corbelling.
I believe that Christine and Envirofan are an excellent choice of these seeking a quality product, with quality support and advice, so a DIYer can achieve better than professional results, with a truly elegant enhancement to their house.
I enjoyed this project, and working with Christine as a team. C Blair
Create a healthy home with fast and affordable sub floor ventilation.
The saying is ‘your home is your castle.’ But who would want to live in a damp castle? Sub floor ventilation Melbourne can stop dampness in its tracks and reverse the cycle of mould and heat build-up as you protect your health and your home.
How does Envirofan fan-forced sub floor ventilation
contribute to family health and home?
Envirofan fan-forced systems sweeps away humidity and damp air from the sub floor area allowing fresh air to be drawn into the sub-floor area. Why is this important?
A poorly ventilated sub floor area which consists of passive vents only, accumulates humidity which reacts with organic substances, mould and materials which our homes are constructed of results in off-gassing. When these gases reach saturation point this will penetrate into the habitable area via porous flooring material and in wall cavities whereby the occupants are surrounded. The air quality inside the home will degenerate. Children or adults with bronchial vulnerability will exacerbate their condition.
What about termites? Termites are attracted to humid conditions will allow them to thrive. Envirofan is a termite control mechanism which reverses humidity levels in the sub-floor area. This fact is outlined by the ‘Termite Inspection Report” in accordance with AS3660 which is used in the ‘pest control industry’ advises that moisture in the sub floor area must be minimized which inhibits termites to establish themselves within the property. (click for more….)
Envirofan sub floor ventilation in Melbourne since 1994.
Why use Envirofan systems?
Since 1994 Envirofan have successfully been used to tackle these situations as aforementioned. However using Envirofan systems does shine as a beacon from all others. How so?
- Unisearch tested in the late 1970’s before its introduction into the marketplace (unlike others).
- Lowest db (noise rated) sub floor ventilation system in the marketplace. 33% less noise of a 240v system.
- 1/10th power consumption of a mid-size 240v in-line fan system.
- Is a tried and tested product which assures customers of its longevity & reliability.
- Being 12v minimises the carbon footprint than 240v systems.
- No need for a full ducted system which adds clutter to the sub-floor area.
- Retrofits existing brick size and terra-cotta vent size vents whereby the humid and damp air is drawn toward the Envirofan systems then extracted to the outside.
- Brick size Envirofans are prudential in situations where elevated outside ground levels start to impinge on the inside floor and only a brick size sub floor ventilation can be fitted.
- Other systems will not endure in a corrosive environment which the sub-floor area is, meaning unwarranted expenditure.
- Solar power option.
- Envirofans are built by Australians, which supports Australian livelihoods.
In the light of the foregoing you can be confident of Envirofans quality, intuitive installation methods and the sub floor ventilation system which has endured over time.
‘If it’s not Envirofan, it isn’t one’