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Health and Eco Information The Importance of using non-toxic finishes Timber is a living material endowed with many beneficial assets. It is durable and helps keep room temperature constant, regulates humidity. It creates a natural ambience to transform your home into a comfortable, healthy living space. What is in timber coatings?
When the coating is applied, the solvent evaporates into the air in the immediate environment, thus leaving the active components to react and form the harder coating on your timber (to ‘cure’). What is toxicity? Even though the cured coating may be innocuous, the process of coating your timber presents a number of opportunities to generate compounds that may be toxic to people, your pets or the wider environment: Polyurethanes Solvent-based polyurethane is the most widely used timber floor-finishing product currently used in Australia. Solvents used in the their production contain isocyanates which are extremely toxic to both humans and animals. Whittle Waxes products do not contain polyurethanes and are manufactured from natural components. February 2008 Solvent Overview The subject of solvents in coatings is massive. The European Directive 2004/42/EC, is a document 333 pages long, and deals with the classification of “Coatings used in Buildings”, the present regulations governing all aspects of the coatings, application and suitability of purpose. From our point of view there is only one solvent that is environmentally safe: Water. There are a number of chemicals which dilute in water (like Glycol or Isopropanol). Be aware of water dilute-able coatings and oils as they may contain solvents. Water-based solvent free coatings are preferable to water dilute-able coatings as these may contain solvents. Another type of solvent is the organic solvents, which are not mixable with water. Generally these can be divided into those derived from petroleum and those derived from renewable plant sources.
The products we endorse use aromatic-free isoaliphatic solvents with a high flash point. There is no risk during application of igniting the product and the solvent evaporates slowly so inhalation is reduced during application. We believe that they are preferable to plant derived terpenes. Isoparrafins belong to the isoaliphatic solvents. They are not ecological perfect but the best you can get if you have to use solvents. "75 evacuated from office building" – 24 May 2006 Article published by www.heraldsun.com.au “SEVENTY-five people were evacuated from a Sydney CBD building after fumes from a timber solvent overcame a third of them. Authorities said about 25 of the workers evacuated from the building on the corner of George Street and Martin Place about 4.30pm (AEST) were treated at the scene by ambulance officers after suffering nausea and vomiting. A New South Wales Fire Brigades spokesman said the fumes originated from a polyurethane solvent that was being applied to timber on the third floor. The fumes spread throughout the four-storey building, causing workers to feel ill. Hazardous material workers were at the scene and would determine when the building was safe to re-enter. Here is what floor polishers have to say about solvent-based polyurethane. ”I have seven guys working for me, so it’s an OH&S issue and a major
health concern for me and my guys. If someone wants to use solvent-based
polyurethane on their floors, I’ll walk away rather than do the job. You get
smashed off your head. High as a kite. It increases your heart rate. Your body
temperature goes up. Your nose runs and your eyes water. Breathing is difficult
and you can't drive after using it.” ”It is not good for you. It contains heaps of isocyanates. With internal
rooms with no ventilation the toxicity after drying time is ridiculous. It can
cause emphysema and dermatitis. I don't know why it is still being used, it
should be banned. I have heard of budgies and cats dying. We had a customer in
Melbourne who wanted to sleep in the house. She ended up so sick she went to
hospital. To coat with poly we should have a full respirator which costs about
$2500 to buy. I hate using poly especially since my daughter was born 18 months
ago. I hate going home to her smelling of poly.’” “I gave up floor sanding a couple of years ago because of health problems
from using poly (solvent based polyurethane). After using it, I couldn't
breathe. And couldn't sleep.”
Whittle Waxes supplies a comprehensive range of eco-friendly natural waxes for interior and exterior timber applications.
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