Polycarbonate Twinwall Sheet & Profiles

Twinwall polycarbonate provided by Interstate Plastics is the ideal glazing material for many outdoor applications including roofing, hobby and commercial greenhouses and window replacement. Twinwall’s notorious double paneled sheets serve to trap air, therefore increasing the product’s insulation strength. Insulation properties will increase depending on the material’s thickness.

Twinwall’s surface is protected from the degradation effects of UV radiation by a proprietary co-extrusion process. Beneficial infrared light passes through the material promoting an ideal growth environment. UV-resistant Twinwall is twelve times lighter versus glass and the resins comprising the material are specially developed for excellent flame retardant properties.

• Highly flexible
• Extreme durability and impact resistance
• UV protected from the elements
• Easy to machine and install
• Air layer for insulation
• Lightweight versus wood and steel
• High light transmission
• Multiple colors available
• Flame retardant

[Twinwall Installation Guide PDF]

[Polygal Features and Benefits PDF]

[Polygal Multiwall Warranty PDF]

[Polygal Anti-Fog Warranty PDF]

[TopGal Multiwall Standing Seam System PDF]

These charts show wind loads and sheet deflection that should be taken into account when designing a covering. Use of the graph indicators is quick and easy, and is intended to provide information of a type generally acceptable in civil engineering. Each chart provides data for 3 different sheet widths with the maximum proportional deflection being 1:20 or 5% of the specific width.

The right-hand area, where the curves become more horizontal, measures specifically and only sheets clamped at 2 sides. The left-hand area measures specifically sheets glazed in frames with supports perpendicular to the sheet ribs. For structures built in areas with variance in meteorological conditions, the use of adequate safety factors is recommended in order to reduce risks.

The data and information in this section is given in good faith but only as basic technical support for engineers of various structures. In no way can this information be substituted for the responsibility and liability of the designing engineer of a structure as determined by law. The information pertains to the roofing material only and does not in any way determine the strengths required in a supporting structure or in various glazing systems.

Wind Load Charts:
Polygal Standard 8 mm (5/16") sheet
Polygal Standard 10 mm (3/8") sheet
Polygal Standard 16 mm (5/8") sheet
Titan 10 mm (3/8") sheet
Titan 16mm (5/8") sheet
Selectogal (RFX) 16mm (5/8") sheet
Thermogal 32mm (1 1/4") sheet
Thermogal 35mm (1 3/8") sheet
Triple - Clip 16mm (5/8") Panel

U Profile #212
H Profile #201
Base/Cap #230/#231
1" Vent Tape
Screw #422
Bubble Washer #473 
Foam Spacer #505

U Profile #213
H Profile #202
Base/Cap #230/#231
1" Vent Tape
Screw #422
Bubble Washer #473 
Foam Spacer #505
Ridge Profile (please call)
F Profile (please call)

U Profile #214
H Profile #203
Base/Cap #230/#231
Vent Tape
Screw #422
Bubble Washer #473 
Foam Spacer #505
Ridge Profile (please call)
F Profile (please call)

U Profile #215
Base/Cap #207/#211
Vent Tape
Screw #422
Bubble Washer #473 
Foam Spacer #505
Ridge Profile (please call)
F Profile (please call)

Polycarbonate Twinwall is used in construction and agricultural industries as well as many DIY applications.

Weather and Impact Protection
Lighter and easier to install versus metal, and more protective than wood, you can rely on Interstate Plastics' selection of polycarbonate storm protection systems. Our RDC Storm Panels for commercial businesses and homes protect windows from strong winds and flying debris during hurricane season. They allow in light while guarding your windows and doors against hurricane force winds, flying debris, and severe weather.

Design & Architecture
Polycarbonate Twinwall finished plastics give a sense of openness and flow while maintaining protection, durability and strength for years to come.

Agriculture & Greenhouses
Virtually unbreakable, withstands UV rays, hail and extreme weather. Multi-wall sheets provide the best thermal insulation of any greenhouse and agricultural coverings.

Windows, Glazing & Light Transmission
Enlist nature's qualities for interior atmosphere. Perfect for building lighting, open passageways, pools, verandahs, interior design elements, display windows and exhibitions.

Patio & Awnings
For home and commercial design, Twinwall is like putty in your hands - almost any project, however unique it may be, can be implemented with polycarbonate Twinwall.

DIY
From wind shields to shelters, custom greenhouses and art projects, polycarbonate twinwall can be cut and drill using standard wood working tools. It's also good for drilling, trimming, bending and bonding (use Weld-On 55 "glue").

Cold Aisle Containment & Data Center Solutions
Interstate Plastics has a wide variety of polycarbonate twinwall solutions that address cooling issues associated with data centers and other IT systems. Proper planning in air flow management eliminates hot spots, gets cool air to where it needs to be, and saves money by cutting down on the electrical cost of air conditioning.

Data centers, server rooms and other IT racks are generally lined up in alternating rows with a walkway in-between where the front of the equipment faces each other to create a "cold aisle", and the exhausts from the equipment also face each other to create a "hot aisle".

Our polycarbonate twinwall can be utilized as an effective physical barrier (with significant advantages over PVC vinyl aisle containment curtains) between server racks and other equipment as its thermal properties allow for alternating cold and warm isles to sit side by side without significant heat transfer between the twinwall and multiwall sheets.

Cut and drill using standard wood working tools:

Cutting can be done on a standard circular, jig, or table saw with a blade having 8-12 teeth per inch. Thinner gauges can be cut with a box knife.

Drilling is performed with standard wood drill bits.

Trim with a standard box cutting knife.

Bending is done by cold forming along the direction of the flutes. Bending guides are available.

Bonding ("gluing") can be done with Weld-On 55 adhesive.

Get growing with the Snap & Grow 6' x 8' Silver Frame Hobby Greenhouse from Palram. Heavy duty aluminum frames assemble easily without much hardware. Crystal-clear polycarbonate panels slide right into the frame, lock into place and are virtually unbreakable.

Aluminum framework, clear single layer polycarbonate panels, swinging front doors, rain gutter and roof vent are standard features of the Snap & Grow greenhouse. It comes with an easy to use set-up manual and is available in standard silver or a green powder coat.

Make any backyard a sanctuary - in a snap!