
MULTIWALL POLYCARBONATE SHEETS
Meridian Building Plastics stock both Sunlite & Marlon ST Multiwall Polycarbonate Sheets.
Sunlite is a family of flat, multiwall polycarbonate sheet products that feature a cellular structure with at least two walls and connective ribbing. This creates insulating air spaces (cell) that help reduce thermal transfer and result in a rigid, impact-resistant sheet that is significantly lighter in weight than solid polycarbonate, acrylic or glass sheets. In addition, this solution offers substantially better energy efficiency than any single layer sheet. The Sunlite multiwall polycarbonate product range offers many options – from built-in condensate control for greenhouses & garden centres to advanced SolarSmart tints that reduce solar heat gain while providing greater light transmission and clarity.
Marlon ST Long life multiwall sheet is a lightweight insulating glazing material manufactured from damage resistant polycarbonate. Added Long life protection provides resistance against the effects of UV weathering. Marlon ST Long life multiwall sheets are available in a range of thicknesses, structures and options for a wide range of roofing, cladding and glazing applications.
To Purchase Multiwall Polycarbonate click HERE
PROPERTITIES
Flammability
The sheets are self-extinguishing and comply with the most demanding of international fire resistance standards.
Thermal Insulation
The excellent thermal insulation results from the air cells inside the hollow structure of the sheet. It has a much higher insulating ability than single walled, corrugated or solid flat sheet. It offers low heat loss (or gain), and therefore higher efficiency. The ‘U’ value is a number which measures the quality of thermal insulation. Lower values for a material mean superior thermal insulation.
STORAGE & HANDLING
Multiwall-Polycarbonate sheets are supplied with a protective polypropylene film on both sides. The sheets must be stored under cover with the protective film left in place. When protected with the film, the sheets should not be left exposed to sunlight for any length of time, as the sun’s warmth can be magnified as it passes through the stack causing excessive temperatures and a risk of the film adhering to the sheet. Care must be taken when handling sheets due to sharp edges.
CUTTING
The Multiwall Polycarbonate sheets can be cut using either a handsaw, jigsaw or band saw. When using a portable or fixed circular saw, protective eyewear and gloves must be worn. It is recommended that a fine-toothed high-speed steel saw blade be used. An allowance of 4mm on all sides should be made around any item positioned through the sheet to allow for thermal movement.
STRUCTURES

Twinwall available in 4mm, 6mm,& 10mm thicknesses
Triplewall available in 16mm thickness
Fivewall available in 25mm thickness
‘V’ Structure available in 35mm thickness
| STRUCTURE | THICKNESS | WEIGHT Kg/m2 | LIGHT TRANSMISSION | U-VALUE | ||||
|---|---|---|---|---|---|---|---|---|
| Heatshield | ||||||||
| Clear | Bronze | Opal | Bronze on Opal | Metallic on Opal | ||||
| Twin Wall | 4mm | 0.8 | 82% | 3.8 | ||||
| Twin Wall | 6mm | 1.3 | 80% | 3.5 | ||||
| Twin Wall | 10mm | 1.7 | 79% | 35% | 30% | 2.9 | ||
| Triple Wall | 16mm | 2.7 | 76% | 35% | 30% | 2.3 | ||
| Multi Wall | 25mm | 3.1 | 68% | 11% | 30% | 10% | 5% | 1.6 |
| Multi Wall | 35mm | 3.5 | 57% | 20% | 15% | 1.5 | ||



