WINDOW PAN DRAINAGE DAM

DEFLECTEUR D'EAU POUR FENETRES

English Abstract

The invention relates to a system (and components) for a Window pan water dam
drainage system. The
object of the invention is to deflect water from the window base sill plate
back to the exterior drainage
plain of the building envelope ensuring water ingress does not through the
windows sill plate or wick up
the vertical studs of the rough opening of the window.

Claims

Claim:
1) A light weight PVC window pan drainage dam for a window sill plate, said
dam assembly
comprising of, a PVC extruded sill strip that slopes from back to front that
runs along the sill
plate to butt up to, the, Left and right 90 degree angled ends comprised of
PVC creating a
finished tie in to both vertical studs of the window rough opening, the base
of the sill plate has
hollowed out areas to prevent from warping and buckling.
The left and right 90 degree angled ends has these hollowed out areas as well
to strengthen the
structure of the components and prevent warping and buckling. The left and
right end are made
through an injection mold process to get its shape and are fastened the
corners of the window
rough opening at the sill plate and the vertical studs, the extrude sill plate
strip is then installed
between the left and right angled ends to complete the assembly and creating a
continuous
window pan drainage dam.
2) The window pan drainage dam assembly of claim 1 which can comprise of a
wide range of single
component plastics and mixtures of plastic materials including but not limited
to: PVC based,
Polystyrenes based, Rubber, silicone based, wood based and fibreglass based
mixtures, of
various sizes with the same profile.
3) The window pan drainage dam assembly of claim 2 which can also include but
not limited to a
single component or mixture Galvanized steel, metal products man made
composition,
composite materials natural or manmade, of various sizes with the same
profile.
4) The window pan drainage dam assembly of claim 2 and 3 will maintain the
same profile and
shape however can vary in dimensions and width to accommodate different wall
systems and
rough openings to receive windows of various sizes and widths.
5) The window pan drainage dam assembly of claim 4 which can be manufactured
by means of
manual fabrication, extrusion, mold injection, casting, 3D printing, CNC
fabrication or
templating.
6) The window pan drainage dam assembly communicate with each other to form a
continuous
window pan drainage dam profile continuous form end to end of the window sill
plate and up
the left and right vertical studs of the window rough opening.
7) The window pan drainage dam assembly of claim 6 which can be mechanically
fastened to the
sill plate and the left and right wall stud of the windows rough opening.
8) The window pan drainage dam assembly of claim 7 which is ready for primer
oil or latex based
and a peal and stick membrane that protects the sill plate and assembly of the
window from
moisture and water ingress.

9) The window pan drainage dam assembly of claim 8 which forms a complete
uninterrupted seal
and water management window pan drainage dam ready for window installation.
10) The window pan drainage dam assembly of claim 9 that channels and permits
moisture to drain
and air flow for drying the window pan and drainage dam area.

Description

CA 02810963 2013-03-28
1) Field of invention:
The invention relates to a system (and components) for a window pan drainage
dam system and
manages moisture and water buildup to redirect the water and moisture away
from the interior
of a structure out to the buildings envelope drainage plain to direct the
water back out and
away from the building. The object to the invention is to provide a
consistent, durable product
that is easy to install and inspect window pan and drainage dam resulting in a
contiguous sealed
window pan that promotes drainage away from the interior of a building
structure.
2) Description of related art:
Window openings of buildings are of reinforced concrete, steel, wood and
concrete like
materials have window openings in various chose locations of any building
structure. Where the
windows openings are located in the building they must integrate into and
become part of the
buildings envelope (exterior) protective system as a whole. A building
envelope is meant to
protect the building structure from water ingress, wind and thermal transfer
that causes
structural damage, mold, rot and decay of a building structure.
Certain types of walls of buildings have an inner cavity between the outside
cladding and the
inner wall consisting of a plaster board material. The afor said cavity
permits air movement with
the outside atmosphere to provide air pressure equalisation chamber, a thermal
break and
moisture vent conduit for moisture infiltration trough the exterior cladding.
Over time by action
of wind, rain, temperature freeze and thaw small cracks on the exterior of the
building allows
further water infiltration of that first defence is realised. With the window
pan drainage dam
system being tied into the building envelope of the building ensures water
ingress or thermal
moisture at the sill plate that occurs does not affect or damage the structure
of the building
water and moisture drains out to the drainage plain of the buildings envelope.
The window pan drainage dam consists of three components, the left and right
sloped angle
plates and the extruded sloped center plate creating a continuous window pan.
The assembly is
installed length ways to the sill plate and vertical stud of a windows rough
opening from the left
or right of the windows sill plate to create a continuous sloped base plate
that diverts water and
moisture away from a window opening creating a natural exit to the drainage
plain of a
buildings envelope.
Installation of the window pan drainage dam system does not require skilled,
specialized
workers or specialized equipment to be installed. The integrity and
consistency of the system is
not only in the discernible attributes of the design but also the durability
of the product. The
system is ideally engineered to existing water proofing primers and membranes
to enhance
current building and market performance.

CA 02810963 2013-03-28
Its simplest form this invention creates a safer more consistent system for a
window pan
drainage dam assembly, being easy to install, sustainability and
environmentally beneficial.

CA 02810963 2013-03-28
Description of drawings:
1) Shows end profile view of the sill strip that varies in length dependant
on the length of the
window.
2) Shows the right angled end of the system the left angle is the same only
reversed
3) Shows a side view of the right angled end of the system the left angle
end being the same only
reversed.
4) Shows the front of the right angle end of the system the left angle is the
same only reversed

Representative Drawing