Slab Edge Insulation
THERMAL BREAK INSULATION
The insulation provides a complete thermal break between your foundation and the ground around it. This reduces the transfer of energy from your home into your flower beds, allowing you, not the surrounding environment, to dictate the temperature within your home. If a thermal break is not created, you could lose the same amount of heat as leaving a window open in the middle of winter. Why heat the atmosphere?
A slab edge insulation represents a new frontier in the drive towards warmer, drier, healthier homes. It is a fully insulated and thermally broken slab and available in New Zealand.
This slab combines strength with durability, while installations are quick, practical and efficient with site specific insulated slabs delivered to your site in pre-cut segments.
Solutions for most types of ground (incl TC1/2), home (single storey, multi-level or simply an extension) and commercial build, while providing insulation with an R value of R2.5-R3 depending on the site.
The slab encases the perimeter and puts a continuous layer of polystyrene between the ground and concrete, unlike traditional waffle slabs. This insulation has a dramatic effect on the surface temperature, significantly increasing the comfort of the home and the health of the family, all the while lowering the cost of heating.
In the past the industry concentrated on insulating ceilings and walls, however up to a third of a building’s heat can be lost through an uninsulated floor, with 80% of that heat loss through the external edges of the foundation. It has been proven in many countries that a Completely Insulated Foundation offers the best form of heat retention.
Iso-thermal analysis conducted in line with ISO 10211 comparing to a traditional waffle slab shows, that a slab edge insulation is significantly warmer, providing comfortable warmth even in the middle of a South Island winter -0°C climates.
What questions do you need to ask your professionals?
How much money can I save?
Through using the right insulation you can save hundreds, even thousands, per year off your energy bill to heat your home. Floor insulation is the easiest and most cost effective way to retain heat in your home. We have found that an Insulated floor combined with In-slab heating is by far the cheapest, most rewarding way to heat your home. It should cost around $100 per month to heat the average sized home! One of our clients has calculated the cost of underfloor heating for his home at 60.2c/m2 per month. Forget the expensive wall hung heat pumps, warm your whole house from the ground up.
Even without underfloor heating, an insulated concrete foundation can act as a heat sink for your home. This regulates the temperature changes in a room allowing you to maintain a consistent, comfortable temperature.
What Homestar rating do I get?
As an official partner of Homestar™, insulating properties have been recognised by those charged with implementing New Zealand’s energy efficiency ratings. A fully insulated foundations can help you gain a Homestar™ rating of 6 and above, an important consideration when valuing a home as more and more people become aware of the value an energy efficient home can create.
What are the benefits for me?
Outside cold can easily travel through a traditional foundation, causing thermal bridging, and creating uncomfortable cold spots within your home. The fully insulated foundations offer superior performance when it comes to thermal bridging, resulting in consistent temperatures throughout your home with reduce cold spots, which optimizes energy efficiency.
People feel more comfortable when the heat is at their feet, and it is slightly cooler at their head. By allowing the slow release of heat from your foundation, it maintains this balance ensuring you enjoy that warm comfortable feeling.
The additional heat retained in your foundation also reduces the ability of damp to rise at the juncture of wall and foundation. This in turn leads to a warm, comfortable living environment without that damp presence in the air.
Reducing the heat loss from your home ensures it is warmer, drier & healthier which reduces its occupants’ exposure to cold and moisture. There has been much study on the triggers for asthma sufferers and it has been proven a properly insulated, warm, dry home greatly improves the symptoms.
A warm floor is also very important for people with poor circulation, those who are inactive for long periods of time, for children who live closer to the floor, and for babies and the elderly as they cannot keep themselves warm as well as healthy adults.
World Health Organisation recommends a minimum of 18°C for living areas and 16°C for bedrooms, 30% of New Zealand homes being built today don’t meet these standards. It makes it easier to maintain these temperatures and reduce those doctors bills.
As seen above, it helps retain heat in the foundation and thus leads to a higher temperature at the junction of wall and slab when compared to traditional methods. This higher temperature reduces the likelihood of moisture condensation building up in these corners, and thus avoids the buildup of spotty mold.
The design of our infill, combined with the perimeter footings, allows underfloor heating to work up to 40% more efficiently by lessening the heat loss each time it nears the outside of the house. The effectiveness of an insulated slab used in conjunction with underfloor heating was discussed in the Autumn 2014 edition of the Building Innovations NZ magazine (page 5).