Why It's Bad To Insulate Your Basement Ceilings

It is a common misconception that insulating the basement ceiling will lead to more energy efficiency. However, insulating the ceiling in your basement only separates it from the home envelope. The basement walls should be insulated instead. The best way to insulate basement walls is with rigid foam insulation because it resists mold and retains its R-value over time. This article discusses why insulating your basement ceiling can be bad for you but also offers advice on how to do so if you choose to.

What Is Basement Ceiling Insulation?

Insulating the basement ceiling is a common way to insulate basements. The insulation will be installed on top of the existing ceilings in your basement, and it usually consists of a fiberglass or foam insulation. The goal is to keep heat from being lost through the exposed topside of your walls, which are often called basement ceilings.

By insulating the ceiling, you can save on your heating and cooling costs in that area of the house because heat will not be lost through the exposed topside of your wall basements anymore. 

Insulating a basement ceiling is an easy DIY project for homeowners who have some previous experience insulating their attic or insulating their basement walls.

Why It’s A Bad Idea To Insulate Your Basement Ceilings

  1. Insulating your basement ceilings is a bad idea because it increases the risk of mold – it can cause moisture to build up and condense, which will lead to mold.
  2. It’s also not suitable for air quality and can lead to respiratory problems.
  3. The insulation will be an eyesore, as well as hard to clean up or remove later on
  4. If water gets into the insulation, it may cause rot in the wood framing
  5. The heat from a furnace or boiler can’t escape through those insulated walls, so you’ll end up with an over-heated basement that’s uncomfortable for people who live there.
  6. You’re more likely to have a leak if you insulate your basement ceiling because of all the pipes running along them.
  7. Insulating your basement ceilings can be a big waste of money
  8. Your home’s heating and cooling systems are designed for the whole house, not just one room
  9. It’s an added step during remodeling which means more time, labor, and materials costs 
  10. If you’re looking for a way to increase your home value, consider painting your front door bright colors or adding outdoor rugs instead!

The Best Alternative To Insulating Your Basement Ceiling: Basement Wall Insulation

If you insulate your basement’s ceiling, it will not have much effect on how cold or warm your home gets. To achieve energy efficiency, it is a better idea to insulate the walls of the basement rather than the ceiling. Insulating your basement’s ceiling only separates the basement from the home envelope or thermal boundary. Placing rigid foam insulating against the basement walls will serve to protect the walls and the rest of the space from outdoor temperatures. Rigid foam insulation resists mold, retains its R-value over time, is a non-toxic product that can be used in most areas, including basements without a vapor barrier.

How To Install Basement Ceiling Insulation Should You Choose To Proceed 

If you insulate your basement ceiling, then place the insulation as close to the inside of the roof framing studs. This will create an air space where hot moist outside air can’t get in and condense on top of the foam. The best type of insulator for this is a closed-cell spray-in product that has a reflective coating on the back. Spray-in insulators are more durable than batt insulation, and they will not sag or attract mold as fiberglass batts do over time. 

This can be a good choice for someone with vaulted ceilings in their basement, but it’s not recommended for anyone else. If your ceiling is flat or slanted, insulate the walls of your basement instead. 

How A1 Home Insulation can Help

A1 Home insulations will help by insulating your basement ceiling for you should you choose to. Of course, we will first assess the house and advice you if a basement wall insulation will better achieve your home improvement goals. We offer affordable pricing and the best insulation installation service around! Contact us today to learn more about how we can insulate your basement ceiling properly.

Attics, Attic Vents, And Attic Fans. What Are They?

Your attic is typically the space between the roof and the ceiling of the highest floor of the house. It is often used to store things like out-of-season clothes, holiday decorations, or old furniture while also serving an essential function in regulating temperature and airflow throughout the house.

Attic ventilation refers to an air-exchange system designed to pump fresh, cool air into the attic. It also removes warmer, humid air from inside your home and stores it in the attic until you need it again.

An attic vent or fan helps with this process by providing a way for hot moist air to leave through an opening at the top of your roof.

A good-quality attic ventilation system will not only prevent damage from moisture and mold but also stop ice dams from forming in the winter. In addition to this, it extends the life of roof shingles by preventing heat buildup in your attic. 

What Type Of Ventilation Do I Need For My Attic?

There are two types of attic ventilation systems – Active and Passive Ventilation. Active ventilation systems use an electric fan to push air through your roof vent and passively allow hot, humid air to escape. Passive attic vents, PAVs, rely on natural convection of heat for airflow in order not to require electricity or any other power source. This is why passive attic vents are recommended for homes built before 1978 which were not built with electric attic vents.

Active vent systems are more common because they provide a higher level of attic ventilation. Still, passive venting is also an option for homeowners who wish to avoid using electricity or other power sources. Passive ventilation can be used in older homes that were not constructed with them and provide less airflow than active ventilation systems.

Today there are clean technology PAVs powered by solar systems. A1 Home Insulation experts will assess your home and inform if your home needs more vents.


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