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Chemical barrier that is able to destroy the cell walls of certain harmful bacteria?
Stomach Acid
What is the pressure caused by the collisions of particles in a water vapor with the walls of a container?
Contact between the particles of a gas and walls of the container cause pressure in a closed container of gas.
What causes pressure inside a helium balloon?
The pressure in a container is due to the particles of the gas hitting the inside walls of the container.
What were the two main functions of castles?
the door and the walls protect the people inside
What organisms are made of cells that do not have cell walls?
The species inside the animal kingdom are example organisms that do not have cell walls. This includes reptiles, birds and mammals.
If the exterior walls have tyvek on them do you need to put plastic vapor barrier on the inside walls?
No. You need to let the house breathe.
Is plastic ok to use as a vapor barrier on the inside of a house?
2 to 6 ml. visqueen is commonly used as a vapor barier on the inside of exterior walls, before drywall installation, if that's the application that you are referring to.
If a house has plastic vapor barrier on the inside walls and a foil barrier on the exterior of the house should you remove the existing old outer foil when residing?
Unless your home is heated by electric baseboard you may take it down if you wish. However the foil has reflective heat values, which means it reflects out the heat from the sun in the summer and reflects in the heat in the winter.
How does moisture get inside containers inside refrigerator?
The air in the container, as well as the food inside contains water or water vapor. As the temperature of the container as you put it into the fridge is hinger, the water in the food continues to evaporate, saturating the air in the container with water vapor. As the walls of the container cool down, the air inside the container comes into contact with the wall and is cooled to the point that the water vapor condensates. Eventually, the lid and the walls will have moisture on it.
When constructing a new wall to optimize insulation value is it acceptable to install 2 inch foam board on the inside of the wall in addition to the fiberglass batts between studs?
2" of foam is not very vapor permeable, so from that point of view it makes sense to have it on the inside of walls in cold climates, and people did used to do this in the eighties, but all the current literature says that foam must be used on the outside, with a more permeable vapor barrier on the inside. See BUILDERS GUIDE TO COLD CLIMATES by Joseph Lstiburek.
What should you use for a vapor barrier and should you install this before drywall?
Plastic sheeting works well for this, and yes it goes behind the drywall on exterior walls to help prevent moisture from getting to the drywall.
Is Tar paper safe for indoor use?
Yes, depending on what you use it for. 15 lb. felt (standard tar paper) is what is used as a vapor barrier under sand and finish hardwood floors. It can also be used as a moisture barrier behind HardiBacker or Durock on shower walls that are tiled.
How is vapor pressure produced?
When particles vaporize, they collide with the walls of the container producing vapor pressure.
Can you apply drywall over roofing tar paper on interior walls without condensation?
tar paper is not a good vapor barrier for the interior. 6 mill plastic is best to use under drywall in cold climates.
Moisture barrier in the pool?
is the use of vapor barries necessary of the walls of the pool will rest on the hollowblock form of the residence. Beyond the hollowblock form is backfill soil. Slab to be applied on the hollowblock wall is also 6" thick
What is found along the walls of the uterus?
Endometrium is found on the inside walls of the uterus.
How do you say walls in Spanish?
"Muros" are outside walls, "paredes" are inside walls.
