Rockwool Insulation

rockwool insulation, blown cellulose insulation, insulation r value, attic insulation, blown attic insulation

Rockwool Insulation

Very environmentally friendly, manufactured from recycled slag and natural rock, high R-values and reasonably priced insulation option.

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Rockwool insulation is produced from recycled steel slag, which is a by-product of steel production.

It is also made from natural rock such as limestone, diabase, or basalt, but you will find that the primary source of Rockwool is steel slag and this is frequently referred to as "slag wool".

Rockwool Insulation Batts

Rockwool Insulation - Batt Type Configuration

Rockwool Insulation Performance::

Also, rockwool has great R-values ranging between a low of 2.8 per inch to 3.7 per inch. It has a higher R-value than that of blown cellulose insulation because of its higher density of rock and slag wool that is used in its manufacture.

Rockwool is produced in three basic forms, or insulation types:

Batts: which are also referred to as blanket insulation.

Rigid Boards: which are used as interior sheathing and foundation insulation because of its great moisture tolerance.

Blown-in: Similar in nature to cellulose in its use in attics and enclosed cavity spaces.

Blown-In Rockwool Insulation

Rockwool Insulation - Blown-In Type or Loose Fill Variety

Blown-In Type - Rockwool Insulation:

Rockwool Insulation of the blown-in variety, can be used in either unenclosed attic or ceiling spaces or in enclosed cavity spaces like stud walls.

One outstanding feature of Rockwool Insulation is that it resists settling and it retains its rated R-Value much better. For existing home installation, consider the following installation method:

Drill small holes between the exterior wall framing members and spray the cavities full with special equipment. For open attic ceiling installation, a 2' x 2' opening into the attic is typically all that is needed for installation.

Installers who are accustomed to working with Rockwool are generally employed to insulate either an new or renovated home. And because of the out of the ordinary equipment needed and appropriate installation to ensure proper coverage and eliminate gaps or spaces you would probably leave it to professional installers..

Whether you pay someone to install blown-in rockwool insulation or do it yourself, be assured that the installation if free of voids and gaps which can result in the insulation product being installed with too low a density.

Rockwool Insulation - Type Available

Rockwool Insulation - Available in 3 Different Configurations

Batt-Type Rockwool Insulation:

Batts or at times it is called batting, is a slab or sheet shaped kind of insulation that is delivered in rolls. Unenclosed attic and ceiling spaces are a common application for Rockwool Insulation batts, an they are installed by locating them between the ceiling joist or rafters in your home.

Batts are rectangular pieces in size and are manually placed one by one until the floor of your attic space is covered completely.

Another likely spot to use the batt products are between wall studs, prior to installation of the drywall. If you intend to install Rockwool Insulation yourself, you would be much better off choosing the batt configuration, even though it takes much longer for the installation than a blown-in installation.

Also the batt configuration is much easier to remove from an attic installation for future access or remodeling. If Rockwool Insulation is compressed during installation, in most circumstances the insulation will spring back, maintaining the products R-value and gap-filling properties.

Like blown-in insulation, care should be taken that the rockwool batts are installed properly with no gaps or spaces in order to maximize the energy savings potential of the insulation.

Rigid Board Rockwool Insulation

Rockwool Insulation - Rigid Board Type

Rigid Board Rockwool Insulation:

It is also possible to manufacture Rockwool Insulation into rigid boards. Board stock is usually applied directly to the exterior or interior surface, unlike blown-in or batt forms of the insulation.

This is an excellent option for foundation insulation as well.

Heat loss from an uninsulated basement foundations can represent up to 50% of a home's total heat loss in an otherwise well-insulated home. You will observe that rigid board rockwool additionally does a outstanding job of minimizing condensation through the wall and it does not break-down, or degrade and furthermore it resists mold growth. You will additionally notice that this board will not decay or rot.

Rockwool Insulation - What Are The Green Qualifications:

Rockwool has very good green building qualities in that it is manufactured from natural and/or recycled materials. It additionally does not use any CFC's or HCFC's in it manufacture, which are typical for a number on insulation varieties, and this helps save the earth's ozone layer. There are no chemical additives or asbestos fibers in its makeup either.

Phenol urea formaldehyde is used as a binding agent to make this insulation. You may be familiar with the fact that formaldehyde is a known human carcinogen, but the finished Rockwool Insulation does not contain any free formaldehyde and if properly installed it will not have any negative health effects or air quality issues.

DOE Recomended Levels of Insulation

Department of Energy Recommended Insulation Levels Map