Andersen 400 Serie Guia De Instalacion página 9

7. Apply Flashing Tape
Unit must be properly flashed and sealed for protection against water and air infiltration. Use non-reflective
flashings. Highly reflective flashing tapes can raise the surface temperature of the vinyl to the point where vinyl
deformation and product damage may occur.
• This instruction step depicts one of many options for proper flashing.
• Moisture infiltration problems in any type of building can be reduced by properly flashing and/or sealing around
all building openings, including windows and doors. Proper flashing under and around window and door
openings can reduce moisture problems, but the performance of any building system depends upon the design
and construction of the building system in its entirety, which should address local environment, climate,
building codes and product and material limitations. The design and installation of flashing and sealing
systems are the responsibility of the architect, contractor, installer, and/or the manufacturer of the building
exterior specified for the project.
• Apply Drip Cap (full width).
• Apply flashing tape over Installation Flange at sill.
• Apply flashing tape over Installation Flange at sides,
overlapping flashing tape at sill.
• Apply flashing tape over Drip Cap and Installation
Flange at head, overlapping flashing tape at sides.
8. Insulate and Seal Unit
• When insulating between unit frame and rough
opening, DO NOT over pack batt insulation or overfill
with expandable foam. Bowed jambs may result
causing product performance problems and/or
incorrect operation of unit.
• A minimum space of 1/4" is required around exterior
perimeter of unit between the frame and exterior finish
material to allow for material expansion.
• Masonry/Brick Veneer installations require a minimum
1/2" space along the sill and 1/4" space around
remaining perimeter to allow for settling and
expansion.
• Insulate between frame and rough opening on all sides. DO NOT
over pack or overfill with insulation; bowed jambs may result.
• Clean and prime around outside of unit with isopropyl alcohol
and a clean cloth where sealant will be applied. Apply backer rod
and sealant around exterior perimeter of window after siding (or
other finish) is applied.
Drip Cap
(full width)
Flashing Tape
Sill
(apply first)
Caulk Gun
9
Installation Guide
Head
(apply third)
Sides
(apply second)
Exterior View
Sealant
Exterior View