Most HVAC systems are over sized enough to include the attic space in the conditioned areas. The Heat load is greatly diminished and foam does do the same as a radiant barrier by stopping the thermal heat load transferring into the attic space. Foam can lower the tonnage needed of the HVAC so increasing the area is a "WASH" for the tonnage issue. I am sure some people can afford GOLD in their attic, but for the rest of us we just use FOAM.....
You do realize that you pay to condition that space right? Is that 4", or about R-15? Foam is NOT a radiant barrier. Silver, gold, aluminum are. And if you still look at the OSB associations website, it will void the warranty on osb. Water leak will destroy the foam in that area, what is the plan when you have to replace that area? Pay out the yang again to have it sprayed? With loose fill, you can cover 90% of the duct system if it is up in the attic.
Most HVAC systems are over sized enough to include the attic space in the conditioned areas. The Heat load is greatly diminished and foam does do the same as a radiant barrier by stopping the thermal heat load transferring into the attic space. Foam can lower the tonnage needed of the HVAC so increasing the area is a "WASH" for the tonnage issue. I am sure some people can afford GOLD in their attic, but for the rest of us we just use FOAM.....
SprayFoamInspections 2 months ago
You do realize that you pay to condition that space right? Is that 4", or about R-15? Foam is NOT a radiant barrier. Silver, gold, aluminum are. And if you still look at the OSB associations website, it will void the warranty on osb. Water leak will destroy the foam in that area, what is the plan when you have to replace that area? Pay out the yang again to have it sprayed? With loose fill, you can cover 90% of the duct system if it is up in the attic.
HomeEnergyNow 1 year ago