All of us have many questions pertaining to insulation of living space. We hear about a number of insulation materials available in the market and get confused as to which one we should choose.
Spray foam insulation should always be installed by an experienced professional, for several reasons:
Open-cell is an insulation and air barrier product which has tiny cells which are not completely closed. It is usually less expensive because the density is lower, 0.5 lb/ft 3. Often used to insulate interior walls, it minimizes outdoor noise intrusion, but It is not recommended for outdoor applications. It is typically used in warmer climates.
Closed-cell spray foam is typically used in colder climates. It has a more compact structure, and is water-resistant, while also serving as a vapor barrier and high performance air barrier. Closed-cell can be installed anywhere in the home, inside, outside, or in ground.
R-value is a unit thermal resistance and it indicates how well a material is able to resist conductive heat transfer. Materials with a higher R-value are better insulators than materials with a lower value.
This depends on the situation and the type of foam. A thicker layer will have a higher R-value, and greater insulating properties.
A two-component mixture composed of isocyanate and polyol resin comes together at the tip of a gun, as it is sprayed onto walls, ceilings and concrete slabs it forms an expanding foam which fills cracks and gaps, and then hardens.
Blown loose fill fiberglass insulation is used to insulate attic spaces in houses, garages and workshops.
Only when required by building code.