High R-Value Insulation Systems

Double Layer Insulation



Double Layer Diagram

It is common to install a double layer system to achieve a Higher R-Value envelope. This system enables the performance values to be increased significantly and is considered an innovative new construction of metal buildings for energy savings. A high R-Value system is commonly referred to as a double layer system. Two layers of insulation are installed and held up with metal bands to achieve a High R-Value.

Steel bands are installed on the underside and perpendicular to the roof purlins. A pre-cut layer of insulation faced with polypropylene fabric is then installed in between the purlins, running the length of the building. This layer is exposed to the inside of your building and the polypropylene product serves as a vapor retarder while providing a bright, reflective interior finish. A second layer of unfaced fiberglass is then installed from the peak to the eave- perpendicular to the roof purlins and over the top of the first layer. This acts as a thermal spacer between the exterior panels and the steel roof purlins. The insulation blankets are pre-cut to fit into the roof and wall cavities of your building. This helps save time and money by eliminating any extra waisted material that would normally be cut off.

Double layer systems are a great choice for buildings where people will work or live, or if energy savings are important to the owner. Investing in a high R-Value system up front will save you money for years to come throughout the life span of the building.

Double Layer R-Value Options

The insulation thickness of your double layer system is determined by the depth of your purlins. It is important to fill the cavity of your purlin while installing a thinner layer of insulation over the top to create a thermal barrier.

Single Layer

R-Value

2.5"
R-8
3"
R-10
3.5"
R-11
4"
R-13
6"
R-19
8"
R-25
9.25"
R-30

Double Layer

High R

3" + 6"
R-29
3.5" + 6"
R-30
4" + 6"
R-32
2.5" + 8"
R-33
3" + 8"
R-35
6" + 6"
R-38
3" + 9.25"
R-40
4" + 9.25"
R-43


Double Layer Roof Insulation

Installing Double Layer Insulation

Insulate Metal Building

Installing Roof Insulation

Steel Roof Insulation

Hangar Insulation

Double Layer Insulation Package

Double Layer Insulation Materials

Roof Insulation

Insulated Metal Building

Double Layer Fiberglass Insulation

Attaching Double Layer Insulation

Insulating Steel Walls

Insulated Steel Building

Insulation Kit