FREQUENTLY ASKED QUESTIONS

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Questions
Are there customized sizes of BULLETPROOF sheets?
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Yes, BULLETPROOF is available in custom sheets of up to four square meters.

Can flat solid polycarbonate be installed in a similar manner to glass in curtain wall applications?
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PALSUN can be installed with standard curtain wall aluminum glazing profiles and EPDM gaskets (similar to glass), or spider fixing spaced with approximately 400 mm centers. However, it cannot be used with structural silicone and PALGARD (PALSUN) with anti-scratch coating is the recommended substitute in this case.

Can I cover my old polyethylene greenhouse with polycarbonate while still keeping the old structure?
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Yes, but with minor reinforcements to the structure in order to support the load.

Can I install corrugated PVC and polycarbonate sheets horizontally for siding?
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Yes. Make sure you start installing from the bottom up so the overlaps will not let the water in.

Can I install multiwall polycarbonate sheets horizontally for siding?
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No. The multiwall channels should always be vertical to allow condensation water to drain out by gravity.

Can I install PALRUF corrugated PVC and SUNTUF corrugated polycarbonate sheets horizontally for siding?
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Yes. Make sure you start installing from the bottom up so overlaps prevent water from penetrating indoors.

Can I retrofit my old glass house with polycarbonate sheets?
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Yes, Palram's MetalMatch technology enables us to create a covering that will fit any existing structure without requiring any additions.

Can I step on SUNTUF skylights during or after installation?
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Although SUNTUF is remarkably strong and can support extreme loads, for your safety, do not stand directly on the sheets. If it can’t be avoided, use stepping ladders, platforms or crawling boards.

Can I use clear PVC corrugated sheets for skylights?
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Clear corrugated PVC sheets can function as skylights incorporated into metal or other types of roofing. Note that this is only suitable for areas with cold climates.

Can I use multiwall polycarbonate sheets as a skylight combined with a metal roof?
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Yes, you can by using domes or glazing solutions. Please contact Palram technical support for further information.

Can I use PALRUF clear PVC corrugated sheets for industrial skylights?
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PALRUF is an excellent skylight panel. It can overlap corrugated metal sheets and other types of corrugated roofing panels. PALRUF skylights are resistant to chemicals and fumes, and are an ideal solution for the chemical industry.

Can polycarbonate light transmittance be degraded over time?
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SUNTUF roofing sheets are made with a UV protection layer. This layer protects the sheets from UV radiation harm and maintains light transmittance and quality for many years.

Can SUNTUF corrugated polycarbonate or PALRUF PVC sheets be bent into arches?
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Corrugated plastic sheets are tough and flexible. You can easily bend them to a curved roof without losing material integrity. There is only one rule: stay within the allowed arch radius. 
In simple terms, an arc is a segment of a circle, and its radius is equal to its circle's radius. 
Your sheet's minimum bending radius is determined by its profile (corrugation) and thickness.
Typical DIY polycarbonate corrugated sheets can bend to an arc radius of 4,000mm. Some of the more robust sheets require a minimum radius of 7,000mm. Check the specs of your sheeting to be sure.

Can the percentage of light transmission be controlled? I need a lot of light but I need it to be diffused.
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Palram offers various LT% parameters - from 0% to 90%. In addition, we offer a color called a “diffuser” that allows 85% of the light in while diffusing it by 100%. The result is a light-transmitting panel that is not transparent but is highly translucent.

Do Palram’s animal covering and cladding solutions have thermal insulation properties?
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All of Palram's animal covering & cladding solutions have superior thermal insulation properties compared to metal coverings.

How do I clean the polycarbonate?
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  • Never use abrasive or high alkaline cleaners on any Palram polycarbonate products.
  • Do not leave cleaners on Palram polycarbonate for extended periods of time. Rinse immediately with cold, clean water.
  • Do not apply cleaners in direct sunlight.
  • Never use sharp objects, squeegees or razors on polycarbonate.
  • Do not clean with gasoline.
  • Always practice safety first and never step directly on a polycarbonate panel.
  • Always test cleaners in a small inconspicuous area prior to cleaning the entire panel to ensure against adverse results.
  • Avoid allowing the pressure washer spray tip to come too close to the panel. Pressure washers often have enough pressure at the spray tip to penetrate or tear the panel.
  • Avoid dry cleaning as sand and dust particles clinging to the exterior of the panels may scratch the surface.

How do I combine corrugated polycarbonate sheets (SUNTUF) with metal sheets?
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With Palram's MetalMatch technology, we can perfectly match almost any trapezoid industrial metal sheet and install SUNTUF as a homogeneous part of the roof.

How do I combine SUNTUF rooflights or sidelights with corrugated metal roofing?
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Palram's MetalMatch technology enables a precise match of corrugated SUNTUF to almost any industrial metal sheet. Contact your local Palram office for more details.

How do I create a double skin glazing solution for façades and curtain walls?
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Flat solid or multiwall sheets can be glazed in double skin applications using standard aluminum curtain wall profiles and EPDM gaskets. The SUNPAL system can be installed in a double skin application with a special aluminum profile provided by Palram.

How do I curve the polycarbonate to follow the façade curve?
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All Palram polycarbonate products can be cold bent onsite during installation, subject to a minimum radius. The radius varies based on the chosen product. For flat sheets such as PALSUN & SUNLITE, the rule-of-thumb for the minimum radius is the thickness multiplied by 200. Please check the Palram catalog for more detailed specifications.