INSTALLATION PROCEDURES FOR PRODEX INSULATION WRAP
Prodex is the most versatile thermal product ever developed. An excellent choice for a variety of applications on wood frame, C.M.U., or steel buildings; sealing radiant vapor barrier.

Having chosen Prodex to be included in your new construction or remodel project; it will be important to adhere to a few simple guidelines, during installation procedures, in order to maximize the materials potential.

- ProdexSA installs Prodex Insulation throughout South Texas.

When the exterior finish of your building will be one of the above, a house wrap application will be called for.

Prodex house wrap is light and easy to handle. Attachment is best accomplished using 1” Ring Shank plastic top nails, either machine or hand driven.

Nailing pattern commonly will be 12” O.C. 4 Nails across the panel with 6” O.C.or 8 nails across the panel at all cut ends.

Special attention to corners is advisable. At these areas, nails should be no closer than 6” from the corner and all layers of Prodex should be lapped 16” beyond the corner. This will allow for 8” to 10” overlay of the next roll and still be no closer than 6” from the corner for nailing.

Begin your installation by fastening Prodex at one corner. Have one man pull the roll out, keeping it taut, while another man adjusts for level and nails the Prodex. Continue pulling and nailing until one roll has been used. The next roll should be overlapped 8” at the cut end and pulled and nailed until a complete panel has been installed around the building. A level chalk line may assist you in this.

At window and door openings, leave approximately 2” of Prodex to hang past or into your opening. The extra material may be lightly tacked or stapled inside the jambs until windows and doors are to be installed. At that time, the tacks may be removed, allowing Prodex to be tucked behind the door and window flanges, and more fully insulate any intervening air space, which would otherwise be present.

On succeeding vertical layer applications, the rolls will be lapped over the layer below. The tabs on the panel long edges should be matched, keeping layers level, and taped together with ordinary 2” aluminum foil tape with a peel off backing.

This will accomplish a smooth weather tight surface beneath your siding. Cut ends, where one roll stops and another begins, this may also be taped if you prefer, but is not really necessary.

PRODEX ROOFING APPLICATION

Designed to be used as a waterproof Dry-in material and Radiant Insulation Barrier. Prodex is the Underlayment of choice for many manufacturers of roofing materials

The Self-Sealing Thermal Barrier is an excellent choice for all metal or concrete tile applications. Prodex is applied directly to the roof sheathing in the same manner as used for the house wrap. Nailing patterns are the same and the tape is applied to the long edges as you go. While the 3” overlap on long edges is more than sufficient when taped securely, the conditions of your job may call for a longer overlap. You as the installer must evaluate the type of conditions expected to be encountered in the finish structure, and make decisions accordingly.

The simplest roof design is the shed or gable. On this type of roof, you need only adhere to the guidelines previously described for house wrap applications. At the ridge, cut your last panel on the side of the roof opposite and prevailing wind and on the prevailing wind side, carry your last panel over the top of the ridge and fasten on the downwind side, with nails as recommended and tape. Nothing could be simpler.

COMMERCIAL BUILDING STEEL ROOF

A commercial steel roof, such as the style used for the Butler hut or Dean type of structure, may be successfully insulated using Prodex. This will afford a greater amount of insulation than the thin fiberglass batts shipped with the building.

In order to facilitate the installation, only insulate as you install the roof panels, this will prevent wind from lifting the insulation. Joints may be taped as they are installed over the Purlins, working from top to bottom. Two men will be required for this operation, one working from the top and one working from the bottom. Be sure that the Purlins are accurately spaced as the roof panels are punched for attachment to them.

Venting requirements for this type of building will dictate your treatment of the ridge area.

In consideration of insulating the sidewall areas, Prodex is most easily installed by cutting to the proper length of the sidewall, and suspending each panel from the topmost Girt and sidewall stringer. This may be accomplished using tape until the Building side panels are attached.

Proceeding in an orderly manner, one panel at a time, your structure will be insulated in short order, and most noticeably cooler inside at job completion.

AREAS OF SPECIAL CONSIDERATION

HIP AND VALLEY

For the hip roof, succeeding panel layers must be overlapped beyond the Hip itself and securely taped, if the roofing material will not be applied within a short space of time. These areas of a roof are particularly susceptible to wind turbulence, and the importance of a good seal cannot be over emphasized. At all Valley areas the Prodex must again be overlapped beyond the Valley. Since, in the majority of cases, a special Valley flashing will be required by a variety of different manufacturers; consult the specifications for the type you will be using, to discover the width of the flashed area. We usually recommend 18” as a minimum if no specifications exist.

If you wish, a continuous run of 48” Prodex may be installed in the Valley, before overlapping the field panels.

If a dormer is encountered on the roof you are covering, it is advisable to bring Prodex up the dormer wall 8” to 10” when terminating a panel row. This will allow the house wrap material to overlap above the roof surface, and still insure full coverage of the structure.

Many metal roof panels are installed over battens, which are nailed through the Prodex and roof sheathing, and into the trusses or rafters below. The self-sealing feature of Prodex allows for this in its design. No further sealant is required.