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what is insulation foam board

by Emil Rice Published 2 years ago Updated 2 years ago
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What Is Foam Board Insulation? Also known as “rigid “or “continuous”, foam board insulation is made of a dense foam core and maybe laminated on either side. Unlike the fiberglass insulation found in most homes' stud walls, foam boards provide continuous protection from the elements.Jun 2, 2020

Full Answer

What is the best insulation board to use?

Types of insulation boards

  • PIR insulation boards. PIR boards (polyisocyanurate insulation) have a wide applicability and are perfectly suited to insulate a flat roof or a cavity wall.
  • PUR insulation boards. Polyurethane (PUR) is one of the most efficient insulation materials on the market. ...
  • XPS insulation boards. ...
  • EPS sheets. ...
  • Supple glass wool insulation boards. ...

Should I use foam insulation or fiberglass insulation?

While fiberglass may be cheaper, spray foam tends to have an easier installation process. Fiberglass requires measuring and cutting to fit those wall spaces perfectly, while spray foam easily expands 100 times the original size after a quick spray.

Is foam core the same as foam board?

What is the difference between foam core and foam board? There is no difference between foam core and foam board; they both refer to a printing and display board made from a foam core between two sheets of paper. You may also see this material referred to as foamcore, foamboard, paper-face foam, or kappa depending on the manufacturer and region.

What is the best insulation for a house?

Types of Insulation

  • Types of Insulation. Fitted between studs, joists, and beams. ...
  • Blanket: Batt and Roll Insulation. ...
  • Concrete Block Insulation. ...
  • Foam Board or Rigid Foam. ...
  • Insulating Concrete Forms. ...
  • Loose-Fill and Blown-In Insulation. ...
  • Rigid Fiber Board Insulation. ...

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When to use foam board insulation?

Because of its resistance to moisture, foam board insulation is a great choice whenever and wherever there is a chance it could get wet, such as: an exterior foundation, inside a basement against the foundation, and on the outside of a house beneath a house wrap. Foam board insulation is more expensive than traditional batt insulation, so use it only when moisture is a factor and it makes sense with your budget.

What is polyiso foam board?

Polyiso (Polyisocyanurate). This is an even more dense and more expensive foam board insulation. It provides an R-value of 6 per inch of thickness and often comes foil-faced to help reflect radiant heat. Polyiso comes in several thicknesses and is used over house sheathing underneath siding or in attic spaces where its reflective properties are very effective.

What is the best insulation for a batt?

Foam board insulation is a great alternative to the very common fiberglass batt insulation that is in most of our homes. It has a higher R-Value per inch of thickness, it’s resistant to moisture and is easy to work with.

What is EPS insulation?

EPS is used under roofing, over foundation walls and beneath siding. Extruded Polystyrene. This foam board insulation is the rigid pink or blue panels that can be found at home centers in many different thicknesses. It is denser than EPS and provides more R-Value with a rating of 5 per inch of thickness. This foam board insulation is available ...

What are the benefits of using rigid foam insulation?

Although it’s not necessarily better than fiberglass, it does have some advantages that can make it worth considering as a replacement to other insulation types. Here are three reasons why you might want to consider using rigid foam insulation in your home:

What is rigid foam?

When most people think of insulation, they picture fiberglass batts and rolls—and that’s perfectly okay. However, we often forget to consider all our options. There are many different types of insulation available to us. One type that may be unfamiliar to you is rigid foam.

Where Would I Use Foam Board Insulation?

For example, foam board insulation can be used in place of blown in attic insulation, batts, and spray foam. Foam boards, however, generally do not provide the same r-value per inch as other materials, so often other materials are used when space is limited. Foam board insulation is a great choice for block walls, insulated floors, and vaulted ceilings.

What Tools Do I Need to Work with Foam Board Insulation?

Working with foam board insulation requires only a few hand tools. These include (but are not limited to:

What is foam board?

Foam board constructed of polyurethane is known for its sound-insulating properties. This type of insulation can also maintain warmth for fewer temperature fluctuations in the room in which it’s installed.

How many variations of foam board insulation?

In this article, we’ll first discuss the four variations of foam board insulation. Then we’ll jump into the R-value for each, providing this information in succinct chart form. By the time you’re done reading, you’ll know which type of foam board insulation is best for you!

What is the resultant product of extruded polystyrene foam?

The resultant product is a form of insulation with closed cells , which increases the R-value of extruded polystyrene foam. Water nor air can easily penetrate. This insulation is also known for its strength due to its rigidity, so one of the most popular forms of extruded polystyrene foam is structural panels.

What type of foam board is extruded?

The next two types of foam board insulation are polystyrene foam, but one is extruded and the other is expanded. We’ll start by talking about extruded polystyrene foam. Comprised of additives and plastic resin that is fed into a die, the foam will expand while it’s cooling.

What is the best foam for insulation?

Polyurethane comes in several forms. The rigid foam sheets or boards are built to last and are a low-cost means of insulating your home. Spray foam made of polyurethane is a good choice for insulating tight corners where you cannot install rigid boards.

What is the R value of foam board insulation?

Foam board insulation R-value varies based on type but is anywhere from 3.6 per inch of insulation thickness to 8.0 . The types of foam board insulation include polyurethane, polyisocyanurate, extruded polystyrene foam, and expanded polystyrene foam.

What is polyisocyanurate board?

Polyisocyanurate boards are made of a combination of both inorganic and organic materials. The sides have facers bonded to them. The most common places to install polyisocyanurate rigid boards are ceilings, walls, and roofs.

Types of Rigid Foam Board Insulation

There are three types of rigid foam board insulation. They are expanded polystyrene (EPS), extruded polystyrene (XPS), and Polyisocyanurate (Polyiso, ISO). Each has unique properties that are outlined below.

Pros of Rigid Foam Board Insulation

There are several pros of foam board insulation that differentiate it from other standard insulation options.

Cons of Rigid Foam Board Insulation

Despite all the advantages, homeowners will find some challenges with foam board insulation. These need to be considered when making the final insulation decision for your home.

Conclusion

Rigid foam board insulation provides excellent exterior insulation and is a terrific seal for your home. There are three different kinds, expanded polystyrene, extruded polystyrene, and polyisocyanurate. Contractors use each for distinct situations.

How Long Does Foam Board Insulation Last?

What good is an insulation that requires replacement after every couple of years? Foam board insulation is one of the most solid solutions out there that provides a durable barrier against the weather. Its closed-cell forms have a long life due to their high-density composition. Not to mention foam board’s resistance towards moisture, which is one of the key reasons behind insulation going bad before its due time. You can expect the R-value to remain constant as well because rigid board does not deteriorate with time. Therefore, durability is the last thing you need to worry about if you’re opting for foam board insulation.

Why Do R-values Differ in Foam Board Products?

Since foam board comes in different variations with different compositions, each product has its own effectiveness in preventing heat energy loss. For instance, expanded polystyrene has a lower density and lighter mass. This means it has a lower R-value per inch as compared to other forms of foam board, such as polyurethane. Nonetheless, all of these types count as foam board and bring significant insulation properties to the table.

What is rigid foam board insulation?

As one alternative to the more common blanket or roll batt insulation, rigid foam insulation adds layers of thermal resistance to your home’s exterior walls, roof and foundation. Rather than loose, soft mats of fiberglass particles, rigid foam board insulation consists of sheets of polyurethane, polystyrene or polyiso foam ...

What is rigid foam insulation made of?

Rigid foam insulation is typically made from three different types of plastic with slightly different R-values. They are known as MEPS, XEPS and polyiso. The first, MEPS, stands for molded expanded polystyrene. It has an R-value of 3.8 to 4.4 per inch of board thickness. The second type, XEPS, stands for extruded expanded polystyrene.

Which is stronger, closed cell or open cell insulation?

Closed cell foam board insulation is strong and possesses a higher R-value than open cell insulation. R-values indicate the level of thermal resistance of an insulating material. Open cell insulations, like soft batt insulation, possess of lower R-value than rigid foam board. Rigid foam also better resists water and air leaks.

Is rigid foam insulation good for a home?

Even with retrofits, rigid foam insulation is a stronger alternative to traditional open cell batt insulation. Although the cost per square foot will be higher, it is suitable for insulating your entire home.

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