How To Insulate An Attice With Icynene
Insulating an attic can run 50 to 2 25 per square foot 5 38 to 24 22 per square meter source.
How to insulate an attice with icynene. Attic insulation material type home attic spaces can be insulated with a range of insulation materials including traditional fiberglass laid on the attic floor traditional cellulose blown onto the attic floor and spray foam insulation which can be applied to both the attic floor or the underside of the roof deck depending on the application requirements. Choosing which insulation to use. Fiberglass batts with an r value of 50 were replaced with 5 1 2 in. She has an annual heating bill of 1 600.
You basically would have to remove all the existing fiberglass and then it s sprayed across the ceiling and completely insulates and seals that ceiling from the rest of the house which cuts back on drafts and that sort of. Cost of insulation can vary greatly. The average cost to insulate an entire home is 2 500 to 5 500. Attic insulation using fiberglass mary has a four bedroom detached house 150m2 in size.
The ventilation that s up there now is not going to hurt or help if you use an icynene type of insulation. And not only is it insulation. The quest for greater energy efficiency in buildings has led to increasing interest and need for insulation improvements in hvac equipment more airtight construction new materials and assemblies. Of icynene with an r value of only 20.
The practice of foam insulating the attic has raised eyebrows in the building industry because standard roofing techniques call for the attic to be ventilated. The idea is that if air can t move through the insulation moisture isn t going to be much of a problem either. 10 questions to ask insulation is one of the top 10 design choices you ll make in your new home. Icynene can also be applied to the underside of a roof deck creating an airtight seal between the roof and the attic space.
However in a vented attic situation it will become approximately 130 degrees in the summer. You should feel free to challenge your home builder with good questions to make sure you ve got the right product for your home. Mary previously had 100mm of fibreglass insulation in her attic but decided to upgrade the insulation in her attic to the required 300mm following consultation with the seai and various contractors. Icynene is the most suitable form of attic insulation in both new and existing build homes.
Senior engineer manager at icynene john broniek makes the case for the unvented attic assembly and why insulating the underside of the roof makes sense.