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Today ICF forms are rapidly gaining popularity in both the residential and non-residential markets. So much so that the Cement Association of Canada has developed standardized ICF training modules to help facilitate greater adoption of ICF construction. ICF stands for Insulated Concrete Forms. Two of their main objectives are:
(1) To facilitate greater understanding and awareness of ICF construction as a viable building alternative, that will escalate its adoption in the residential and non-residential markets.
(2) To provide an industry baseline benchmark for required ICF training, ensuring adequate skills competence in the building workforce for the delivery of quality construction.
What is ICF Construction
Insulated Concrete Forms are energy-efficient reinforced-concrete walls that are dry-stacked without using mortar and filled with concrete, think of them like Lego blocks. The blocks, or forms as the are referred to, are stacked to form exterior and interior walls, reinforcing steel or rebar is then added into the openings and then concrete is pumped in to form the structural element of the walls.
An Insulated Concrete Form can be made from a variety of materials:
(1) Cement-bonded polystyrene beads
(2) Cement-bonded wood fiber (recycled waste wood and cement)
(3) Expanded polystyrene
One of the best ICFs are wood concrete forms, that is those that are made with cement-bonded wood fiber material that only uses natural ingredients. This combination of recycled waste wood and cement results in a better performing ICF wall system. When looking for an insulated concrete form you want to find ICFs that are environmentally safe, made from recycled material, do not contain nor emit any toxic elements, and are fully recyclable as well. Furthermore, insulated concrete forms that do not contain plastic, foams or polystyrenes are better for the environment than those that do contain these materials.
Benefits
The four benefits of ICF Construction are:
(1) Green Building
ICFs are inherently green, from raw materials to installation. Depending on the product, you can find ICFs that have no CFCs, HCFCs or formaldehyde used in the manufacturing process and made from recycled material. Also, 100% of the installation waste, even the insulated forms themselves, are recyclable.
(2) Strength and Comfort
In ICF construction the walls and floors form one continuous surface. This will help to keep out insects and create an environment free of allergens, dust, mold and other irritants. Furthermore the insulated forms are virtually soundproof and keep out unwanted noises and distractions..
(3) Energy Performance
Using insulated concrete forms means that your walls are already insulated better than any wood frame house. The ICFs will help to keep your house cool in the summer and warm in the winter and you can save as much as 50-80% on heating and cooling costs.
(4) Structural Integrity
A building built with insulated concrete forms can stand up to winds of 200 miles per hour and resist fire for up to 3.5 hours. ICF homes have been know to withstand hurricanes, tornados and a wide range of weather conditions from coast to coast. Furthermore concrete does not rot when it gets wet, making the upkeep and repairs minimal.
Within the last decade many homeowners, builders and architects have come to realize the superiority of the ICF construction. ICF buildings have higher energy savings, better fire resistance, and a superior structural integrity over traditional wood framed houses.