Our BTUBUSTERS ^tm RADIANT BARRIER is recommended for all applications as shown above.
( Figures # 1, #2 & #3.

which offers the advantages of location 2 while providing the construction ease of location 1. This technique places the radiant
   barrier on top of the roof rafters (or trusses) before the roof decking is applied. It is installed so that it droops 1 1/2 to 2 inches
   below the upper surface of the roof structure. 

When the roof decking is applied, an  airspace separates it from the radiant barrier in a way similar to that of location 2. This  
   airspace also can be vented separately from the attic.  As with location 2 the most reflective radiant barrier surface should face
   downward toward the attic airspace. 

New Construction Radiant Barrier installed over trusses

NOTE: Our BTUBUSTERS ^tm Radiant Barrier is PERFORATED and has
TWO IDENTICAL FOIL SIDES, therefore you get both upward and downard heat rejection.

Q - How do I determine the best place to install BTUBUSTERS Radiant Barrier ?

A - Climate factors need to be considered.

1. Mostly Hot Climate = Your Energy Bill is greater in the SUMMER for Cooling than your Energy bill for heating
      in the winter. More HOT WEATHER than COLD.

2. Mostly Equal Climate = Your Energy Bills for Cooling and Heating are about equal. About the same HOT & 
     COLD WEATHER.

3. Mostly Cold Climate = Your Energy Bills are more for Heating than your Energy Bills are for Cooling. More
      COLD WEATHER than HOT.

B - Do you have Attic mounted HVAC Equipment / Duct Work ? ALL CLIMATES.

  Generally, if you live in a climate areas #1 or #2, then the under the roof rafter installation ( fig # 2 ) in existing
construction is recommended . In new construction, either fig #1 or #2 applies. Installation as in Fig #3 in these
    climate areas are ok, BUT if you have Attic Mounted HVAC Equipment / Duct Work ,
then insulating the HVAC Duct Work is HIGHLY RECOMMENDED.

   If you live in climate area #3, then installation as in pic # 3 is recommended.
Insulating any Attic Mounted HVAC Duct Work is HIGHLY RECOMMENDED.

New or Existing Attic Application # 1 or # 2 above.  New & Existing Ceiling Application COLD CLIMATE Application # 3 above.

All Radiant Barriers require an air space of at least 3/4" on one side in order to work properly. Air spaces on two sides as illustrated above ( Figure 1. ) are excellent. Proper ventilation of attics is very important. Do not interfere with attic ventilation when installing any Radiant Barrier. Equal areas of intake (soffit) and exhaust (gable, turbine or ridge vents) are recommended. Be sure to allow at least 3" from top of existing insulation on ceiling to edge of Radiant Barrier and 6" at ridge as illustrated above. This applies to all attics regardless of ventilation type used.

    This method of installation although using a little more Radiant Barrier and taking a bit more time is recommended especially if you
    have attic mounted H V A C Equipment and Duct Work. One very good reason is that the Radiant Barrier will shield the H V A C
    Equipment and Duct Work from the heat energy coming thru the roof. This will allow the H V A C Equipment / Duct Work, Attic Air
    Space and Ceiling insulation to remain cooler for longer periods of time. The net result is cooler attics in summer and Lower Utility
    Bills. 

    Location 2 is best for two reasons.  First it can easily have two radiant barrier surfaces (top and bottom). Second-and more    
    important-it offers the potential for separately ventilating the space between the radiant barrier and hot roof deck and the attic space
    itself. This results in an attic air temperature somewhat closer to the conditioned space temperature in both winter and summer. As
    with location 3 dust may collect on the top of location 2, but a radiant barrier surface facing downward will perform as well as one
    facing upward. Therefore, for reasons of dust accumulation use location 1 or 2 and depend on the downside for radiation control.

The use of either BTUFOIL ^tm or BTUBUSTERS ^tm Radiant Barrier under Vinyl or Aluminum siding and Brick is
an excellent way to increase the thermal performance of your walls. Where you desire or require a vapor barrier, use our BTUFOIL ^tm Insulation. Where a vapor barrier is not desired or required, use our BTUBUSTERS ^tm Radiant Barrier. The heat reflecting properties of either product will help you to save energy and help lower utility bills all year long. 

Either BTUFOIL tm or BTUBUSTERS tm Radiant Barrier can be used over the sheathing before installing vinyl / aluminum siding or brick.

BTUFOIL tm can be installed directly to studs as exterior wall insulation  before brick is installed. BTUFOIL tm  replaces the foam board and house wrap. Co$t $aving$ & R-Value Gain.

BTUFOIL tm can be installed directly to the ceiling joist as ceiling insulation in new or remodeling construction & around  " knee walls ".

BTUFOIL tm can be installed between ceiling joist / rafters in cathedral / vaulted ceiling applications. Available in 24" & 16" widths with staple tabs for this application.