The Northlander™ Skyview Low Profile Polycarbonate Roof

An aluminum coupler system for translucent sheets that installs on customer provided framework.


Polycarbonate Roof on Customer Provided Framework

Often we have found that customers come to us with glazing requirements, but they have an existing framework that doesn’t require the strength of our big Skyview structural beams. That’s why we offer Skyview Low Profile.

  • Works with 16mm sheets.
  • Very flexible, easy to install.
  • Mounts on existing aluminum, steel, or wood framework.

With the Skyview Low Profile system, it doesn’t matter if your rafters are 16” or 24” apart. And it doesn’t matter if there are slight inconsistencies in rafter spacing, all you need to do is trim the sheets to suit your openings. Alternatively, you can run horizontal strapping (purlins) and space the Skyview Low Profile glazing bars equally.

Our extruded aluminum base and pressure cap with gaskets are your best choice for a long-lasting, waterproof roof system. Much more durable and leak-proof than systems that use polycarbonate joiners.

How to Install Polycarbonate Sheets on Wood Pergola

Thinking About a Glass Roof?

Our polycarbonate sheets are lightweight, provide good insulation values and are so much easier to install than glass. Solarium glass is very heavy, and if you are using laminated glass it can be prone to cracking during installation or from the subtle shifting of the foundation. Polycarbonate sheets are many times stronger than glass, acrylic or even modified acrylic.

Need To Repair a Glass Roof?

Don’t forget how hot it was with that glass roof! And maybe it was leaking at the purlins (the joints between the glass units). Re-glaze with polycarbonate, it’s cooler, and the sheets run the full length of the roof, without the leaky purlins of glass systems.

Hot Leaky Glass Roof

Before: Hot leaky glass roof

Re-glaze Solarium With Polycarbonate

After: Cool, dry polycarbonate roof


Aluminum Joiner for Multiwall Sheets

Polycarbonate Light Transmittance and Insulation Values




Light Transmittance

SHGC (Solar Heat Gain Coefficient)

U-Factor W/m2K


3 wall

16mm (⅝”)





3 wall

16mm (⅝”)




Opal Ice

3 wall

16mm (⅝”)




Solar heat gain coefficient (SHGC) is the ratio showing the amount of the sun’s heat that can pass through the glazing. The lower the number, the less heat build-up you will have in your sunroom.

Polycarbonate Sheet Colour Samples

Available Polycarbonate Colours. Clear, Opal Ice, Bronze

U-Factor (or U-Value) is the rate of heat transfer from warm to cold areas in watts per square metre Kelvin (W/m2K). Lower numbers mean better insulation. Typical values:

  • single glazed glass, 5.91
  • double glazed with 13mm air space, 2.73
  • double glazed with 13mm air space & low e, 1.70
  • double glazed with 13mm air space, low e & argon, 1.36

Low Profile Glazing System Specifications

  • Hidden fasteners
  • Extruded aluminum base rail
  • Extruded aluminum pressure cap
  • Extruded aluminum screw cap
  • 5/8″ thick multiwall sheets
  • Impact-resistant, polycarbonate is 200 times stronger than glass, 30 times stronger than acrylic and 15 times stronger than modified acrylic
  • Lightweight, easy to replace your cracked or leaking glass roof
  • Blocks almost 100% of harmful UV.
  • The horizontal burn rate of 1 inch (25 mm) or less, when tested in accordance with ASTM D 635.
  • Self-ignition temp. of 986 degrees F (530 degrees C), when tested in accordance with ASTM D 1929.
  • Flame Spread of 85 when tested in accordance with ASTM E 84.
  • Smoke Developed Index less than 450 when tested in accordance with ASTM E 84; less than 75 when tested in accordance with ASTM D 2843.

Impact Strength

ASTM D4812 Izod Impact unnotched, 23° C326 cm-kgf/cm
ASTM D256 Izod Impact notched, 23° C92 cm-kgf/cm
ASTM D1822
Tensile Impact Type S
557 cm-kgf/cm2
Falling Dart 23° C
ASTM D3029
1728 cm-kgf

Price List

Skyview Low Profile – Patio Cover Price List:




Aluminum Couplers for Polycarbonate

* Please inquire about our DIY Low Profile Patio Cover Promotion

  • Prices do not include scrap or off-cuts due to the available stock lengths.
  • Sometimes DIY sales are only available through a local contractor, in which case any DIY or promotional pricing on this website does not apply.
  • Product prices and configurations are subject to change without prior notice.
  • Tax and shipping charges are not included.

Installation Instructions

How to Install Craft-Bilt’s Northlander™ Low Profile Polycarbonate Patio Cover?


Please download it from the installation instruction webpage.

See installed jobs on our Youtube Channel.

These are the most common installation guides. If your specific situation is not addressed, please contact us at (800) 668-6430 or [email protected]

Instructions can be updated without notice. Please inquire about the latest version.

Craft-Bilt’s warranty applies to a properly installed product only. Please contact us for warranty details. Labour and installation warranty are provided by the contractor who sells and installs the product. If you purchase products to install yourself (or have installed) then you are solely responsible for labour, installation, and building code issues. DIY’ers should have above-average construction skills and knowledge of building practices and codes. Please carefully read the footnotes on your quote or sales order. Purchases are bound by our Terms and Conditions of Sale.