People also ask
What is the downside of radiant barriers?
Radiant Barrier Moisture Problems
The other main issue that can impact the performance of any radiant barrier is moisture. In colder weather, radiant barriers can sometimes develop condensation. This issue is most prevalent in climates where the temperature regularly falls below zero degrees Fahrenheit.
Does radiant barrier insulation really work?
Some studies show that radiant barriers can reduce cooling costs 5% to 10% when used in a warm, sunny climate. The reduced heat gain may even allow for a smaller air conditioning system. In cool climates, however, it's usually more cost-effective to install more thermal insulation than to add a radiant barrier.
Is faced insulation the same as a vapor barrier?
The facing on insulation acts as a vapor barrier. However, adding a dedicated vapor barrier (like plastic sheeting) on the interior provides extra moisture protection.
Should you put plastic over insulation?
You should always install a vapor barrier to protect exposed ceiling insulation even if it's temporary. Consult with a building or safety expert to confirm where else in the structure a vapor barrier may be required.
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