When should you install a vapor barrier?

If you live in a mixed climate – hot and humid with several heating months in the winter, you probably need a vapor retarder. Specifically, if you live in climate zones 4C (marine), 5, 6, 7 and 8.

certainteed.com - Do I Need a Vapor Barrier? - CertainTeed

Is 1 4 inch plywood strong?

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What can be used to reinforce plastic?

Glass fibre short strands are short 0.2–0.3 mm strands of glass fibres that are used to reinforce thermoplastics most commonly for injection moulding.

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You're building a wall. Maybe you're putting on an addition or finishing off your basement or maybe you are just about to undergo a major renovation that requires taking the existing wall down to the studs. Whatever your reason you are now looking at finishing a new wall. Whether you are doing it yourself or hiring a contractor it is a helpful to know a little about proper construction. Your first job after the studs are in place is to fill those walls with insulation. If you are not sure if you need insulation in your walls follow along with this flow chart. After the insulation is in place you will want to add a vapor retarder, sometimes called a vapor barrier, if you need one. Not every wall does. A vapor retarder is a material used to prevent water vapor from diffusing into the wall, ceiling or floor during the cold winter. Whether or not you need a vapor retarder hinges on three main factors your climate, your home and the location of the wall you're insulating. To know if you need a vapor retarder, ask yourself a few basic questions:

Map: Insulation Institute

What is my climate? If you live in a mixed climate – hot and humid with several heating months in the winter, you probably need a vapor retarder. Specifically, if you live in climate zones 4C (marine), 5, 6, 7 and 8. Not sure your climate zone? You can check here. What is my cladding type? According to the U.S. Census Bureau 2009 statistics, more than half of all new homes are clad with absorptive materials such as brick, stucco, wood, fiber cement or stone. These moisture-retaining claddings can worsen moisture challenges in the wall cavity. They have the potential to release moisture into the structure, creating an inward vapor that doesn't exist with vinyl siding. Where is the wall located? If you are adding an exterior wall, anywhere in the house, and you answered yes, to either of the above questions you should consider using a vapor retarder.

Vapor Retarder Use and Placement

In certain climates vapor retarders can be a vital part of the wall construction. However incorrect use can lead to additional moisture problems. Consult an insulation professional in your area if you are unsure where or how to install a vapor retarder or consider a vapor retarder that provides some degree of additional flexibility, like a smart vapor retarder. A smart vapor retarder is able to adapt its permeability to allow the wall to dry should moisture get trapped in the wall cavity. A smart vapor retarder is a vapor retarder material with the unique ability to react to changes in relative humidity by altering its physical structure. This material adapts to let moisture out of the wall whether the humidity levels are higher on the outside of the wall (winter) or the inside (summer). A smart vapor retarder is a good solution for areas of mixed climate. Wall construction is important to creating a healthy, comfortable home. Read more about vapor retarders and learn how they can affect the health of your home.

Learn more about Membrain, a smart vapor retarder.

Ready to get started? Membrain products available on Amazon and Home Depot.

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Does opening windows in winter reduce humidity?

When the weather outside is cold, the air is usually dry. Opening the window during dry, cold weather will reduce humidity levels inside the home or office and would be counter-productive. Keep the windows closed during cold weather and use a humidifier to keep humidity levels optimal.

hvac.com - Why Do I Need a Humidifier When I Can Just Open My Window?

Why Do I Need a Humidifier When I Can Just Open My Window?

At HVAC.com, our writers create solutions that put you in control of your HVAC system. Our product reviews and recommendations are researched and backed by real buyers and industry experts, not dictated by our partners.

Question:

Why Do I Need a Humidifier When I Can Just Open My Window?

Answer:

Typically you need a humidifier the most when the weather outside is cold. When the weather outside is cold, the air is usually dry. Opening the window during dry, cold weather will reduce humidity levels inside the home or office and would be counter-productive. Keep the windows closed during cold weather and use a humidifier to keep humidity levels optimal.

How do you heat a portable shed?

How to Heat a Shed Without Electricity: 10 Practical Ideas and... Make Sure It's Well Insulated. Let Some Sunlight In. Build A Solar Window Heater....

Last updated Sep 18, 2018