Installation Instructions

ManualsBrandsJain Americas ManualsBuilding materialsJain 1 x 4 x 16' White PVC Trim Board

APPLICATIONS

Jain Americas’ white pvc trim is well suited for any application where wood trim board

would traditionally be used. lt may also be used in any application with the potential for

moisture exposure or ground contact. Moisture will not affect the performance of white pvc

trim.

White pvc trim can be installed traditionally, prior to siding, or you can install it after

the siding has been installed. This can be helpful in both new siding and trim replacement

situations.

INSTALLATIONS

Jain Americas’ white pvc trim should be installed over a weather resistant barrier system

with a drainage plane that has been applied in accordance with the manufacturers’ speciﬁc

instructions.

White pvc trim should be installed over a solid backing. The 5/4 trim may be spanned up

to 16” on-center.

Before you begin to install trim, ensure that all openings have been properly ﬂashed and

taped in accordance with local building codes.

STORAGE

Store Jain Americas’ white pvc trim on a ﬂat and level surface whenever possible. Ideally

the trim will be stored in a shaded area.

Avoid storing on pavement or under a dark tarp where ambient temperature may exceed

120°F.

EXPANSION AND CONTRACTION

Jain Americas’ white pvc trim is a cellular PVC product that expands and contracts with

swings in temperature. The temperature range and sunlight exposure where the material

will be used determines the amount of expansion and contraction. lt is also important to

consider the temperature of the material, relative to the ambient temperature at the time of

installation. This will determine how tightly pieces can be butt-joined, or how you size the gap

to compensate for seasonal thermal expansion and contraction.

75 to 95°F When working with Jain Americas’ white pvc trim on a warm day (75 to

95°F), the material will be fully expanded. Should the material come from storage at lesser

temperatures, leaving it in the sun for an hour prior to installation will help to achieve full

expansion. However, we still recommend a small 1/32” gap.

55 to 75°F When working with Jain Americas’ white pvc trim on a day of moderate

temperatures (55 to 75°F) the material will be partially expanded. You must allow for some

expansion in your installation. A gap between 1/16” to 1/8” should be considered to allow

for the material expansion and avoid buckling or binding.

25 to 55°F When working with Jain Americas’ white pvc trim on a cool day (25 to 55°F)

the material will be contracted. You must allow for full expansion when the temperature warms

to seasonal highs. As a rule of thumb depending on exposure to the sun the material will

expand approximately 1/8” per 12 foot or 3/16” per 18 foot length.

FASTENING

Jain Americas’ white pvc trim may be attached using a power nail gun. A gun capable

of shooting a 15-gauge nail is recommended. A 1/16” –1/8” nail set is optimal. Do not

overdrive Cortex screws into

the material.

Exterior grade smooth

shank nails (#6, 8 and 10)

can be nailed or shot but

must penetrate solid wood

by no less than 1 1/4”.

Cortex screws are also

acceptable.

Brads, wire nails and staples should not be used in securing the trim.

No predrilling of the board is required unless temperatures are below 40°F at the time of

installation. Predrilling is suggested when temperatures are consistently below 40°F.

Fasteners along the length of the board should be no more than 16” on-center. Properly

spacing the fasteners on the board will reduce expansion and contraction of the product.

Fasteners along the width of the board should be no farther apart than 4” on-center.

Do not nail trim boards through the channel edge of the J Pocket. To avoid this, keep your

nails at least 1 1/2” from the edge of the J Pocket. You may nail within 1/4” of the edge of

the board to capture jambs, but this is not recommended at the very end of the boards.

The boards should be fastened within 2” of the end of the board. In the case of miter

joints, you should fasten through the joint, and use PVC cement as well.

FASTENING SCARF JOINTS

For long runs of trim, a scarf joint will provide the best looking joint that allows for

expansion and contraction. Use our expansion and contraction guidelines to determine your

gap, and use an acrylic or UV-resistant caulk in the joint. The joint should be secured with

fasteners on each side of the joint.

FASTENING MITER JOINTS

Miter joints, such as those used at the corner of a skirt board or mudsill, should be glued

with PVC cement, and nailed through the joint.

SOFFIT AND CEILING INSTALLATIONS

For spans of 16” to 24” use 1-inch (19mm) thick nominal products. Never span Jain

Americas’ white pvc trim more than 24”.

When installing Jain Americas’ white pvc beadboard as a sofﬁt, orient the beadboard

perpendicular to the structure and fasten every 12” on-center or less. For ceiling and other

applications, fasten the beadboard or Jain Americas’ white pvc trim sheet every 16” on-center

or less.

CUTTING & DRILLING & ROUTING

There are no special tools required in order to work with Jain Americas’ white pvc trim.

Traditional carbide-tipped saw blades, carbide-tipped router bits, and woodworking drill bits will

work best. Blades or drill bits designed speciﬁcally for PVC are not necessary.

BONDING & ADHESIVES

Jain Americas’ white pvc trim can be bonded to a variety of substrates, as well as to itself.

For best results, all surfaces to be glued must be smooth, clean, and in complete contact with

each other. When bonding the trim to other substrates, consult the adhesive manufacturer to

determine suitability.

PVC pipe cement or other

solvent-based adhesives

work very well. Use one with

a moderate or slow set up

time. Plumber’s PVC cements

generally have a fast set up time and may bond too quickly for detail work. Cements such as

Bond-and-Fill, IPS Weld-On 705 (white), and 3M’s Scotch-Grip 4475 plastic adhesive are very

good for this application. Bonded butt-joints should be securely fastened on each side. Proper

ventilation and a clean environment are essential for adequate curing. Panels can be laminated

face to face but require special attention such as using a wood press and more time for solvent

based adhesives to cure properly.

GRADE PLANK

The 8" PVC Grade Plank has a lip that will push the siding out so that it is on the same

plane as the lapped siding above it. The Edge will then allow

the water to run down and away from the house, preventing

the siding from absorbing any moisture.

• Before installing, be sure the walls are true and covered

with house wrap. If house wrap is not used, ﬂashing is

required. Flash around the base of the wall 10 - 1/2” up

from the sill plate using rooﬁng felt, rubber, or trim coil

(aluminum/vinyl).

• Fasten Grade Plank the same way you would a Trimboard.

Since the Grade Plank is installed so close to the grade

and prone to exposure to moisture, stainless steel

fasteners designed for wood trim or siding preferred.

Fasteners with thin shanks, blunt points, and full round

heads are recommended. The fastener must be long

enough to penetrate the substrate a minimum of 1

-1/2”.

• Place nails a maximum of 16” on center.

• Install the siding above the PVC Grade Plank in

accordance with the manufacturer’s installation guidelines.

WHITE PVC

INSTALLATION GUIDELINES

Do not fasten any farther

than 2’’ from the end of

the board.

MITER JOINT

FASTENERS

FASTENER

APPLY

ADHESIVE

HERE

APPLY

ADHESIVE

HERE

APPLY

ADHESIVE

HERE

SCARF JOINT SCARF JOINT

2 fasteners per framing

member. Do not exceed

8’’ on center for trimboards

12’’ or wider. This includes

sheets also.

Do not fasten any farther

than 2’’ from the end of

the board.

MITER JOINT

FASTENERS

FASTENER

APPLY

ADHESIVE

HERE

APPLY

ADHESIVE

HERE

APPLY

ADHESIVE

HERE

SCARF JOINT SCARF JOINT

2 fasteners per framing

member. Do not exceed

8’’ on center for trimboards

12’’ or wider. This includes

sheets also.

HOUSE

WRAP

HOUSE

FRAMING

FIBER

CEMENT

OR WOOD

COMPOSITE

SIDING

GRADE

PLANK

FASTENERS

GRADE

Summary of content (2 pages)

PAGE 1
WHITE PVC INSTALLATION GUIDELINES APPLICATIONS Jain Americas’ white pvc trim is well suited for any application where wood trim board would traditionally be used. lt may also be used in any application with the potential for moisture exposure or ground contact. Moisture will not affect the performance of white pvc trim. White pvc trim can be installed traditionally, prior to siding, or you can install it after the siding has been installed.
PAGE 2
J POCKET Leave gap to allow for siding according to manufacturer recommendations. 4’’ Cornerboards can be installed using 2 fasteners at ends & splices, and 1 fastener 12’’ OC along length of the board. CORNERS 3/4’’ described for one-piece corners. MITERED CORNERS – Assemble the corner before installing it. Cut the miter angles, apply adhesive to the length of the miter, and fasten the corner pieces together. Allow the corner to cure, and install as described for one-piece corners.