Every North Star window is a custom-built, high-performance product. It is critical that your windows be installed properly in order to enjoy the benefits designed into your window. If you have any questions about the skills, tools or method required to install your window, please contact your North Star dealer before proceeding.

• Set unit into properly prepared opening, ensuring unit has sufficient space for proper shimming and insulation.

• Do not remove centre strap on double hung and slider tilt windows until securely installed in opening.

• Level sill, shim at corners, under each mullion, at horizontal and vertical mid points and at approximately 16-inch intervals. Ensure unit is level, plumb and square prior to anchoring through window jambs, at shim locations.
Do not anchor unit through jamb extensions.

• Loosely fill cavity between frame and opening with fibre insulation or low-expanding foam being careful not to overpack and overfill.

• Check for consistent clearance between sash and frame.

• In masonry installations, leave 1/4-inch clearance between the window and the masonry to prevent window-related binding problems caused by expansion or contraction.

• For sliding applications, install a drip cap above the window.

• Check unit operation before applying interior trim, exterior brick or siding.

• Apply a quality exterior-grade caulking to the exterior frame cavity between window and opening, ensuring that all voids are sealed for protection from the weathering elements.

• Windows are not designed to carry any bearing load.

WARNING: Screens are intended to keep out insects. They are not designed to restrain children.

Helpful Tips

• Do not paint or stain any vinyl components, weatherstripping, hardware or tracks.

• Clean all operating hardware and tracks on a regular basis. Vinyl can be cleaned using mild soap and water. For stubborn stains use a small amount of Varsol™ on a clean cloth.

• Do not clean glass with abrasive material or cleaner.