Vapor Barrier Basement Framing
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Vapor barrier basement framing. That is if the studs are going to touch the concrete wall. When you install framing insulation and drywall you can be certain that your basement will remain dry. With fiber insulation and a vapor barrier moisture can get trapped in the insulation leading to moldy insulation and decay in the wood framing. On august 7 2020 by amik.
I understand your approach for insulating the complete walls but areas of the basement only have 4 and 2 concrete walls with the remaining height being wood framed. Step 1 remove the damage. The purpose of the vapor barrier is to stop the warm moist air from condensing on the cool concrete walls. Most jurisdictions require a 4 mil plastic sheet vapor barrier for basement walls against concrete.
If you have a framed wall that is adjacent to a concrete foundation wall where the vapor barrier is next to the drywall in front of the studs the fiberglass insulation gets wet and becomes a breeding ground for mold. A vapor barrier is also helpful to keeping a basement insulated and warm. Finishing basement walls using a vapor barrier is easy and the article below will show you how. How to install a basement vapor barrier.
All of us have seen damaged walls and framing members when framing members insulation and vapor barriers are improperly installed. Building codes usually require a vapor barrier 4 mil plastic sheeting on exterior basement walls if the framing is attached to masonry or concrete surfaces or if the wood framing butts up against the outer basement walls. The builder of the home used unfaced fiberglass bat insulation within the stud cavity with an additional poly vapor barrier stapled over the framing and insulation. Vapor barrier for basement framing.
Or you can leave a 4 inch gap between the studs and concrete wall and probably get away with it. Basement remodeling ideas from tv. So there is enough gap for air to flow. The water vapor can come through the concrete from the soil or from indoor air that comes in contact with the concrete.
When the mold grows it will spread to everything around it studs drywall etc. This is accomplished by installing the vapor barrier to the warm room side of the insulation. The material is stapled to the frame of a basement wall before it is finished with plaster or drywall. Polyurethane sheeting is a typical vapor barrier that contractors use to prevent moisture from penetrating the walls of a basement.
You should then use fiberglass insulation that has a vapor barrier between the studs with the vapor barrier facing in toward the living space.