and standard SCH 40 and 80 PVC pipe
of the same size have the same OD (outside diameter). This allows them to use the same fittings. Furniture-grade PVC has a glossy, highly-pigmented and weatherable outer cap that is extremely resistant to damage and degradation by sunlight. SCH40 and 80 PVC are not intended to be left out in the sun. These pipes and fittings are designed for use inside buildings to carry water, etc. UV degradation occurs in the PVC directly exposed to UV radiation and to extremely shallow penetration depths (frequently less than 0.001”). The effects are color change, slight increase in tensile strength, slight increase in modulus of tensile elasticity, and a slight decrease in impact resistance. Furniture-grade PVC pipe and fittings are more impact-resistant and have no printing or stampings on the exposed exterior. Also, the fittings available for furniture grade pipe allow more flexibility in design.
If you do decide to use regular PVC pipe for an outdoor application we recommend that you paint it. You can use a light color reflective paint coating to reduce the effects of UV. Typically you would use an acrylic or latex paint that is chemically compatible with PVC. Compatibility should be confirmed with the paint manufacture. Oil-based paints are not recommended.
The information contained in this article is for general information purposes only. The information is provided by
United States Plastic Corp. and while we endeavor to keep the information up to date and correct, we make no representations or
warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability or availability with
respect to the website or the information, products, services, or related graphics contained on the website for any purpose.
Any reliance you place on such information is therefore strictly at your own risk.
In no event will we be liable for any loss or damage including without limitation, indirect or consequential loss
or damage, or any loss or damage whatsoever arising from loss of materials, time or profits arising out of,
or in connection with, the use of this information.