By encapsulating the attic and leaving the old insulation up there that filth is in your conditioned space.
Spray foam roof deck problems.
Fumes emitted during the spraying process present a potential hazard to employees or customers in or around the building.
The foam will also contract and expand depending on the weather which again reduces cracks.
You may have odor problems.
With a spray on roof you can fill gaps seams and cracks in your existing roof construction giving you even more protection.
Even small gaps can allow the passage of warm air through the foam rendering the foam all but useless as an insulator.
It s ok to leave the foam exposed in an attic if you cover it with an ignition barrier.
Much like the concern about fake news found on social media channels noise about building materials such as spray foam insulation can create confusion among builders architects building owners and even regulators.
Furthermore not sealing ceiling penetrations helps the attic become indirectly conditioned.
Yeah you probably still breathed some of it but not as much as you will now with spray foam on the roof deck.
Spray foam causes moisture problems in the roof line.
Rooftop hvac units must be covered and the entire hvac system shut down during spraying.
Since the spf roof is installed by a spray application there is a risk of the wind carrying overspray onto surrounding cars and other surfaces.
Spray foam myths debunked.
If you directly condition the attic however now you need a thermal barrier and no builder s gonna do that.
Your indoor air quality may get worse.
To get the best performance out of spray foam insulation you must cover the roof rafters and surrounding areas as thoroughly as possible.
At west roofing systems we take extra care to prevent overspray.
While this does not pose a health concern it is a concern for surrounding property.
Punctures and damage should be caught early to prevent leaking into the facility.
Spf s key ingredient isocyanate is hazardous when inhaled or when it comes into contact with the skin.
Spray on roofs can also be levelled out more easily reducing the collection of water in ponds.
Spf roofing systems should be regularly inspected whether there is known damage or not especially after severe weather events that could cause damage such as hail storms tornadoes and hurricanes.