Severe weather can have a huge impact on buildings and it is crucial to ensure that your home or office is structured to be able to handle intense weather conditions, with proper insulation to provide a protective barrier from the temperature outside. While planning to insulate a building, it is important to understand the different types of insulation and the effects that conduction and convection have on the building’s energy efficiency and comfort.
There are five major forms of insulation; foam, fiberglass, cellulose, mineral wool and polyisocyanurate.
Foam insulation comes in two forms, injection and spray which can be either open-cell spray or closed-cell spray. Open-cell is a lighter, more pliable material and closed-cell is a heavier, denser structure that is more resilient to harsher weather conditions. Foam spray is used in new construction to spray in an open cavity in a liquid state and then expands to fill every gap and crevice while injection foam is pumped into walls and ceilings with existing cavities.
Fiberglass is a batt of material made from extremely fine glass fibres that can be inserted between studs, joists and beams, trapping pockets of air and keeping the room warmer in the winter and cooler in the summer.
Cellulose is made up of roughly 75% recycled paper, usually post-consumer waste newsprint, while the other 15% is fire retardant such as ammonium sulfate. This material can either be blown in with a machine or spray applied and helps to increase heat retention as well as dampening the noise levels.