Cornerstone's Patio Doors Add Beauty To Your Home.
A beautiful maintenance free exterior, made of
thick extruded aluminum, provides strength and protection while
offering the warmth and beauty of wood to your home's interior.
Our Unique Design Allows Our Doors To Adapt To Different
Building Applications.
Cornerstone doors are reversible. This allows the active door
to be either left or right-handed. The unique design of the frame
cladding allows the door to adapt to different wall thickness,
so there is no need for costly jamb extensions.
Energy
Efficiency Is Maximized With Cornerstone's Sliding
Patio Doors.
Cornerstone's active panel glides freely along a stainless steel
track. As it closes, weatherstrip forms a tight seal between the
panels and at the frame.
Energy efficiency doesn't stop with the weatherstrip. Because
fiberglass does not conduct cold, a one-piece fiberglass
sill is used to stop the problems of frost and condensation.
Low-E2 glass will maximize energy savings. This double coated
glass is filled with argon gas, and has a stainless steel warm
edge spacer to give optimal insulating value to the room. The
glass stays warmer so there is less chance of condensation or
frost build-up.
The glass is glazed to the sash with silicone caulk and foam
tape. Silicone is one of the industries best sealants.
It has excellent mobility allowing glass to expand and contract
in changing
temperatures without breaking. Foam tape provides a secondary
seal that gives the glass edge a clean look.
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