If I'm reading through your weblogs the right way, I could one) do shut-mobile foam and never have to produce the furring strips ventilation for that decking underside, but I might never see a roof leak right up until it absolutely was in an advanced condition or two) do open up cell foam with the effort on the air gap but dampness penetration might be more seen more quickly If your roof leaked. Dependant on the belief that there's actually no way I may get that attic space's envelope totally sealed (stick frame x thirty calendar year previous dwelling x forty calendar year previous homeowner = some extremely hard to reach nooks and crannies), would you advise 1 kind spray foam insulation about one other, or can it be pointless if I am unable to get the attic envelope sealed one hundred%? Not merely may be the envelope sealing a thought, but obviously so is our incredibly hot and humid Houston local climate Along with the importance that you counsel us to hit the rafter boards with foam to scale back thermal bridging.
Finally, the only way to make certain The work are going to be accomplished correctly without any accidents or injury remaining performed to your household is to hire a certified HVAC organization to come and do the installation in your case.
And as for radiant barrier, it can be as huge a rip-off as solar. A buddy of mine (in advance of I could warn him) paid out to own it put all over his attic ground. It was ridiculously pricey, and as soon as the dust truly sets in, it will eventually merely serve as a heat conductor in the height of summer, and I feel make his A/C costs even higher.
There is is, obviously, an air Area in the attic. For that reason plainly this is the far better tactic for heating climates, as it would reduce some heat decline from the home. In an A/C circumstance there needs to be an air House over the foil to replicate the roof heat from the residing space.
Fiberglass insulation does not have to be Thermal barrier addressed with chemical compounds to really make it fire-resistant, and it does not become anymore combustible mainly because it ages.
There have already been quite a few research that substantiate the usage of radiant barriers in the constructing envelope. Extra study must be performed by independent groups.
Seem Attenuation Batts are suitable for use primarily in inside walls the place sound Manage amongst rooms is desired.
I stand corrected, I agree that a radiant barrier is not really meant to radiate, but alternatively reflect. You should excuse the poor terminology, but I do take problem with the idea that radiant foils do not increase energy efficiency in some applications and that they are ideal alternatives for many matters...
Moisture absorption can make it heavier, resulting in it to shed R-benefit. It really is prone to generate far too much dust that is certainly blown into the house by means of modest cracks or holes all-around fixtures. Like fiberglass, it can be a wellness dilemma.
You're particularly proper that Texas homeowners with attic ductwork You should not have to have preaching -- they require solutions. Therefore you're proper that a properly installed radiant barrier can be Element of the solution.
For the people of you the like to get into the weeds, I'll describe in additional depth why fiberglass loses R-benefit as soon as moist.
Great short article - have been arguing this position with my insulation male for years. On the lighter aspect, any individual else capture the radiant foil/barrier adverts all over? Amusing is nice.
A fiberglass batt is actually a pre-Lower piece of insulation that may be built to fit in the Room concerning the wall studs, ceiling or flooring joists, or roof rafters of the developing. These are made in several thicknesses and widths as a way to fill these Areas fully, depending on the content which was used in development – wood or steel body. Some kinds can also be designed in lower, medium or superior density, which affects the R-price of the batt.
Martin, I wouldn't connect with your website publish "reporting". Your ever more strident "musings" are sensationalistic, deliberately deprecating in the direction of Individuals you disagree with, use scientific info and mathematical formulations selectively, contain conclusions not supported by your personal proof, and manage to therapeutic massage the specifics to suit a predetermined summary.