To further help in the summer you could install additional attic ventilation to allow heat to escape and keep the attic cooler. A well insulated home means the air conditioning and furnace system work less often, besides saving money on heating and cooling bills, the air inside the house does not get processed and cycled as much through your HVAC system, which means the air does not get nearly as dried out.
Insulation also serves to reduce outside sound from entering the home. People near airports and schools often report dramatically less sound infiltrating and most people describe the home as having a more solid feeling to it.
The non-flammable nature of cellulose insulation offers a degree of fire protection to the home. In testing, a well insulated home remained structurally intact and standing significantly longer then a non-insulated or fiberglass insulated home. Also, because cellulose is treated with borate, the material is resistant to insect, termite, rodent, vermin, mold, mildew and fungus. Fiberglass rolls or batts are useful in that they can be hung under floors or used in open-framing and in new construction situations.
But once a home is built it can either be rolled with batting OR blown with a loose-fill fiberglass or cellulose material. A blown application offers several advantages over batting. Some homeowners are directed by their trusty contractor while others just feel a sense a familiarity towards the rolls.
When homeowners, contractors or architects do some research, cellulose blown insulation easily emerges as the best choice. The downfall of rolled material is that it must be placed between each ceiling joist, sometimes fitting tightly, sometimes loosely.
Studies at the University of Colorado have established that a blown-in insulation rated at R provides equal performance to the same job done with R batting. Passive Design Designing the building and the spaces within it to benefit from natural light, ventilation and even temperatures. Email this page. How insulation works Insulation works by providing resistance to heat flow. On this page: Where heat is lost R-values How bulk insulation works Reflective insulation Thermal bridges Insulation slows heat losses from a building, typically by using bulky, lightweight materials such as glass-fibre or polystyrene between framing elements.
Heat loss from a house insulated to current minimum Building Code requirements In a house insulated to current requirements, the windows account for the largest single proportion of heat loss.
Bulk insulation Bulk insulating materials such as wool, polyester, glass wool and foam boards work by trapping air and reducing the speed of heat transfer. Search Search. Links Building Code requirements for house insulation. Conduction is how heat travels through a material from atom to atom. How Does Insulation Work? Location Min.
R-Value for Ceiling Min. R-Value for Walls Min. Installing Thermal Insulation Saves Energy If high-quality insulation is installed correctly in a home, it will inevitably lead to energy savings. How Does Acoustic Insulation Work? When sound waves hit a surface, they are either: transmitted through the material to the other side reflected by the surface and bounced back into the room absorbed by the material Acoustic insulation is specially manufactured to absorb sound waves and is thicker and more dense than thermal insulation.
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FAQ Get answers to frequently asked questions. Do you deliver everywhere in Australia? Is every product available for delivery? No, some brands are only sold in certain parts of Australia. How much will delivery cost? When will my order get delivered? Where are your pick up locations? Finally the air heats the room and us by convection. Conversely concrete, steel or plaster are relatively good conductors of heat and therefore allow heat to pass through quickly.
The sole purpose of the insulation in your home is to slow, as much as possible, the transfer of the heat from inside your home to outside. The next question on your journey to understand how insulation works is to think about poorly fitted insulation.
Poorly fitted insulation could mean leaving air gaps around the insulation material and the fabric of your home or laying the insulation too thinly. However, that 10mm gap allows the air to circulate which in turn allows heat to pass through and escape by convection, conduction and radiation. I'm going to complicate things a little further by telling you that you should also install a vapour control layer on the warm side of the insulation and a breather membrane or air tightness layer on the cold side of the insulation.
These will reduce the amount of water vapour entering the insulation from the inside during summer and the outside during winter, and stop 'wind wash' where air moving over and through the insulation draws heat out of it making is perform poorly. See my articles on how to insulate a suspended timber floor and how to insulate your loft for more details.
Plus closed cell insulation acts like a vapour barrier preventing water vapour passing through it and this can create BIG problems. Personally I'd always choose to go with a well fitted natural insulation material such as wood fibre , sheeps wool , Jute etc.
They are choosing not to use man made materials that can off-gas volatile organic compounds in favour of recycled naturally occuring materials such as Jute, wood fibre and sheeps wool to name just a few. The natural insulation materials are also Hygroscopic meaning they absorb and release water vapour, which is a good thing.
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