Insulation Foil Roof - Sisalation View larger

Insulation Foil Roof - Sisalation

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Sisalation roofing foil is installed under metal roofs, it reflects radiant heat and provides a barrier to prevent condensation on the underside of the roof sheet.

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Purchase Roofing Insulation Foil - 60 metre roll

♦ Sisalation roofing foil consists of outer layers of aluminium foil bonded to weave, bonded together with a heavy coating of flame retardant adhesive. It is installed under metal roofs, it reflects radiant heat and provides a barrier to prevent condensation on the underside of the roof sheet.

 

♦ Alumimium reflective foil insulation is also referred to as "sarking"

♦ R Values - 1.8 Summer and 0.7 Winter. You can cover 72sqm with one 60 metre roll

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♦ Manufactured in Australia, Roofing Foil is a double sided anti-glare reflective foil laminate recommended for use in the sarking of metal roofs. Flame retardant Sisalation is suitable for use in buildings in bushfire prone areas.


♦ Manufactured in Australia, Roofing Foil is a double sided anti-glare reflective foil laminate recommended for use in the sarking of metal roofs. Flame retardant Sisalation is suitable for use in buildings in bushfire prone areas.


♦ Provides an effective barrier against moisture, vapours, wind, heat and dust penetration when overlapped.

 

♦ When used in conjunction with an airspace, Sisalation is an effective thermal insulation material because of the high reflectivity and low emissivity of its aluminum foil surfaces.

 

♦ Complies with the requirements of AS/NZS4859.1. The contribution of this product to Total R-value depends on installation and environmental conditions which include the effect of dust.

 

♦ Our foil is strong and easy to install, using foil fasteners or double sided tape

 

♦ Installation Sisalation should be installed in accordance with AS/NZS4200.2:1994 for the installation requirements for "Pliable Building Membranes". External cladding should be installed without delay. Reflective foil in roofs must be installed with a sag or drape down of approximately 40mm - 75mm between the rafters or battens.  This is to allow a vapour barrier to occur between the reflective foil and the metal roof sheeting.

 

♦ To achieve the stated total R-Values, a mimimum air space of 40mm is required adjacent to each reflective foil face.

 

♦ Condensation : How it occurs!

The underside of a roof often provides conditions under which condensation of water vapour will occur. In cooler weather, roofs can become several degrees cooler than the outside air temparature. As a result, the air in the roof space may be cooled by contact with the roof. This depression of temparature is often sufficent to cause condensation as air is cooled, it's ability to hold water vapour dimishes. The amount of condensation will depend on the amount of water vapour in the air and this varies with climatic conditions.  Flat roofs are more prone to condensation than steep or pitched roofs.

 

Roofing foil insulation provides a heat and vapour barrier and also provides a separation membrain to reduce friction between the roof sheets and the supports, due to expansion and contraction of the roofing material.

 

 

Why Consider Foil Insulation For Your Home

 

Heat has a natural tendency to move into areas with cooler temperatures. That is why during the cooler months, heat can move into walls and even outdoors. During the summer months, it transfers to cooler areas in a home or building, like walls and cracks. As such, the purpose of home insulation or shed insulation is to control the movement of heat, which in turn should result in the efficient use of heating and cooling systems and ensure the even distribution of temperature in a structure.

 

When it comes to roof insulation, homeowners can choose from among several options including foil insulation, reflective insulation or Sisalation. Each of these options has its own advantages and disadvantages. For this article, the focus will be on reflective insulation.

 

Reflective insulation utilises aluminium and plastic substrate put together into a thin blanket. The primary purpose of a reflective insulation is as its name implies – to reflect heat instead of resisting or slowing it down like other types of insulation do. Reflective insulation is best used on roofs and in attics where they prevent heat from moving to other parts of the home.

 

A lot of roofing and insulation experts recommend the use of reflective insulation due to several of its appealing qualities and benefits. First, it is lightweight yet strong. Its lightweight property translates to ease of installation. The tradie installing this insulation will simply need to staple, glue or nail it onto the roof battens.

 

Unlike other forms of insulation, reflective insulation does not succumb to the effects of moisture and humidity. This means that condensation is eliminated while the growth of mildew, moulds and fungi is inhibited. Apart from this, rodents, insects and birds do not nest on this type of insulation material. Finally, it is safe for residents with asthma and is non-toxic.

 

Just how effective is this type of insulation? When installed correctly, reflective insulation can reflect heat by as much as 97 percent which can translate to as much as 25 percent savings on energy bills.

 



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