Free of asbestos, HardiFlex® Senepa cement fascia board is resistant to damage caused by fire, moisture, termite infestation, humidity, hot weather and cold and windy climates — when installed and maintained correctly.
Is Hardie board hazardous?
James Hardie® products contain crystalline silica. Excessive or protracted inhalation of fine particle silica dust can lead to a lung disease called silicosis. There is also some evidence that it may increase the risk of lung cancer if inhaled for prolonged periods of time. Smoking may also exacerbate this risk.
Does Hardie board contain silica?
From 1991 to 2010, the market share of fiber-cement siding has climbed from 1% to 13% [U.S. Census Bureau 2013]. Fiber-cement products can contain as much as 50% crystalline silica and cutting this material with a power saw has been shown to cause excessive ex- posures to respirable crystalline silica.
Does Hardie board cause cancer?
California Proposition 65: Warning: Airborne particles of respirable size of crystalline silica are known to the State of California to cause cancer.
Is HardiFlex good for Wall?
Answer. Yes. HardieFlex sheets with a minimum thickness of 4.5mm can be used for internal walls in residential applications. It can also be used for other applications such as ceilings and eaves.
Is HardiFlex waterproof?
It is extremely hard and waterproof, meaning it will not deteriorate over time when exposed to water, making it ideal for use in high-traffic areas that are susceptible to the adverse effects of moisture. It is not an inexpensive product and should be used judiciously.
What is the best blade for cutting Hardie board?
For a larger project, use a fiber cement saw blade with polycrystalline diamond tips; if you’re installing Hardie siding on a shed or other small building you can use a fiber cement saw blade with carbide tips. For installations with more or longer cuts, the carbide blade will burn out much more quickly.
What are the symptoms of silicosis?
Silicosis: Symptoms
- Chronic, nagging cough.
- Shortness of breath with exercise.
- Weakness and fatigue.
- Fever.
- Breathing difficulty.
- Weight loss.
- Night sweats.
- Chest pain.
Does Hardie board crack?
Hardie board siding usually cracks due to poor installation. The original installer might have accidentally installed a nail too close to the edge of the siding, causing a crack. You can easily fix it by cleaning it and then using caulk to patch the gap. When siding shrinks it causes a gap to form between the planks.
Is it OK for HardiFlex to get wet?
Hardiflex is perfectly fine to get wet. As long as it drys before it’s painted, you will have nothing to worry about. Hardiflex is very weather resistant. It can also be used for wet area applications (such as areas of bathroom, kitchen, laundry area).
How durable is HardiFlex?
Advantages HardiFlex building boards are as durable as they are adaptable – they will not burn, are resistant to permanent water and termite damage and when installed as directed, are resistant to rot and warping.
Do you need a special saw blade to cut Hardie board?
Cement Board-Cutting Tools Carbide-tipped blades are made specifically for this kind of work. You can use a jigsaw, table saw or circular saw, or another tool, as long as it’s equipped with the right kind of blade. Once prepared, cut the Hardie board as you would any other material.
How much silica does it take to get silicosis?
Because silicosis is caused by cumulative or repeated exposure to respirable crystalline silica, it makes sense that we would want to limit exposure as much as possible! OSHA has set the Personal Exposure Limit (PEL) at 50 micrograms per cubic meter of air, averaged over an 8 hour shift.
How often should you paint hardiplank?
every ten to twenty years
What is Hardie Plank? Hardie Plank is a newer composite material made of concrete substrate. Hardie Plank is also called fiber cement siding. While it’s far heavier than aluminum, vinyl or wood, it is extremely durable and typically only needs a new paint every ten to twenty years for maintenance.
Do you need plywood behind Hardie board?
Fiber cement siding should be installed over plywood, OSB, or sheathing. Be sure that the siding installed is dry. Building codes will usually require installing siding over water-resistant barriers and nailed into the studs every 16 or 24 inches.
How often does Hardie board need to be painted?
