INSTALLATION INSTRUCTIONS FOR Aluma-Foil HD & Aluma-Foil SuperPlus RADIANT BARRIER

 

Before You Begin

Be sure you have the following tools and materials:

A.  Proper amount of ALUMA-FOIL, ALUMA-FOIL PLUS or ALUMA-FOIL SUPER PLUS radiant barrier.

B.  Tape measure, drop light, shears, utility knife and stapler (mechanical, electrical or air-squeeze or hammer type)

C.  Two movable support surfaces such as 2' x 3' x 1/2" plywood or 1" x 12" x 3' piece of wood (lengthen for 24" O. C. trusses)

 
Safety Practices

Be sure you observe the following safety rules:

A.  DO NOT lay RB on top of exposed electrical wiring or boxes.

B.  Make sure trusses or rafters are sound before placing your weight on them.

C.  Be sure you have adequate ventilation and lighting. A dust mask is suggested.

D.  Protective headgear (bump cap) and safety glasses are suggested.

      WARNING: DO NOT attempt to stand or lay on existing insulation. Failure to follow these instructions can and may result in

      serious injury and damage.

 

Figure 1: Between the Rafter/Truss Installation

Between the Rafter/Truss Installation (Fig. 1)

1. Measure, roll out and cut enough RB to prevent unnecessary trips in and

 out of the attic.

 

2. Start your first pieces of 22.5” (for 24” on center roof members) Aluma-Foil HD, or

22.5” Aluma-Foil Super Plus, laid flat against roof decking, at the roof peak or ridge

and staple both edges to the deck, with staples on either edges or the RB, at

6”-8” (or less) on center the entire length, using a ½” or  9/16” crown staple with a ¼”

or 5/16” leg.

 

3. When installing RB directly to the roof deck (HD-Foil side down towards attic

and kraft paper side against the roof deck, Super Plus-either side down), it is

important to staple as far out over the eave as possible, without letting the foil

touch the insulation. You must maintain a minimum ¾” airspace beneath the foil

for it to perform properly.

 

4. It is not necessary to overlap the product or tape the seams. Cut around all

vent pipes, skylights and vent openings as necessary.

 

5. It is necessary to coves all gable end walls and knee walls in this type of

installation. Cut out gable vents as necessary.

                   

     

 NOTE:

              1. Use the same installation instructions above for 16” on center rafter/truss spacing but order 14.5 RB.

               2. This installation method meets CA. Title 24 requirements for new construction.

 

Ventilation (Fig 2)

Figure 2: Ventilation

1.  Because ventilation can greatly enhance your RB

     performance, it is important to consider the following:

 

A.  Where no existing ridge or gable vents exist you

should install one system or the other.  Consult vent

manufacturers instructions for proper location and installation.

 

     B . Where no soffit vents exist, be sure ridge, pan or

     gable end vents are of adequate size to properly

     ventilate area.