| Every sign installation is different. The information on this page is to help you determine what is best for your sign installation situation. The photos provided are to help you and show you how some of our customers are installing their signs. Wood Product Signs can provide posts and framing for your signs when available. Depending on your location, we may be able to install your sign for you. The information below is for HDPE plastic signs, however some information may apply
to our wood signs. We strongly recommend reading the information below if you have purchased or are considering purchasing a HDPE plastic sign.
Expansion and Contraction
Due to fluctuation in weather temperatures this HDPE
plastic sign material will expand or contract at a maximum rate of .03" per foot
depending on sign color selected. Installation design considerations must be applied in
order to compensate for sign material expansion or contraction.
This material must have room to move freely.
Oversize All Drill Holes in HDPE Signs
All holes drilled must be oversized a minimum of 1/8 " to
1/4" than the bolt used. (This is to prevent the sign from cracking.) Use of
bolts/fasteners is recommended and they should be loosely fastened to allow movement of
expansion or contraction. DO NOT over tighten bolts! The recycled plastic sign material is very easy to drill. HDPE Plastic signs do not come pre-drilled.
Use Wood Cross Braces
We highly recommend mounting all HDPE plastic signs
to wood posts and using 2 or more wood cross braces depending on the size of the sign. The
maximum space between the cross braces should be no more then 3 feet.
Deck screws may be used to attach the cross braces to the sign, these holes do not have to
be oversized. 12" - 18" is recommended for spacing of the deck screws.
If you are installing your sign into framework, please allow 1/4 " -
on each side of the sign to allow for expansion and contraction.
Do not trap your sign tightly into the framework.
*This also applies to 1 panel or 2 panel (spliced) signs.
If your sign contains 2 or more panels we recommend to use wood cross braces across the
splice of the sign for stability.
Failure to properly install your new HDPE plastic sign may put excessive stress on the
sign and may result in warping or cracking.
view or print our installation instructions (pdf)