Installation Guide

4
INSTALLATION STAGE
Sheet Alignment
Place rst ONDURA-6V sheet on roof. Align the ONDURA-6V
sheet to the rake edge. Align the eave edge of the ONDURA-6V
sheet to overhang the eave by 1 to 1-3/4 inches.
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Note: We recommend genuine
ONDURA nails for installing
ONDURA-6V sheets. Genuine
ONDURA nails are made from
galvanized steel, are ring
shanked, and have a large EPDM
rubber washer to improve
sealing around the nail. Other
types of nails may not provide
sucient hold-down strength.
Color-coordinated screws with
washers may be available.
1/16 inch
diameter head
1/8 inch thick x
5/8 inch O.D.
EPDM rubber
washer
.135 inch
diameter
ring shank
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Place closure strips under the ONDURA-6V sheet with the
curved side up to ll the corrugaons. The closure strips
must be placed where the nails will be located so that the
nails will securely hold the closure strips in place during the
life of the roof.
Tip: To help hold closure strips in place, adhere your
strip to the deck or the ONDURA-6V sheet with spray
adhesive before laying your sheet of ONDURA-6V
over it.
Closure Strips
ONDURA-6V closure strips ll the space created by the
corrugaons. Vented closure strips are recommended along
the eaves and ridge of the roof to enable airow under the
corrugaons. The venlaon holes are small enough to prevent
birds and insects from forming nests under the corrugaons.
Solid closure strips are available to completely block the
openings. There are two ridge strips and two eave strips
per pack.
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If more than one row of ONDURA-6V sheets is needed, then the
sheets must be installed along the eave rst. Then addional
rows are installed above the previous row.
Each row should be installed with the rst sheet at the opposite
end of the roof from the prevailing winds. With this orientaon,
the seam of the overlap will face away from the prevailing
winds. This orientaon will reduce the possibility of wind-driven
rain geng under the corrugaon overlap. If wind-driven rain
could come from both direcons, then we recommend sealing
along the overlap with an elastomeric caulk.
For aesthec reasons, we recommend staggering the posion
of the corrugaon overlap for each row by starng the second
row with a sheet that has fewer corrugaons. As a general
guide, an ONDURA-6V sheet with 3 or 4 corrugaons should
be used for the rst sheet on the second row. Then full-width
sheets should be used across the second row. If installing
more than 2 rows, the odd numbered rows should start with
a full-width sheet and the even numbered rows should start
with a 3 or 4 corrugaon sheet.
If possible, we recommend placing the rst row of ONDURA-6V
sheets on the roof to conrm coverage with overlaps before the
installaon of the sheets.
Ridge strip
Eave strip