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Corner flashing

a technology for corners and flashing, applied in the field of corner flashing, can solve the problems of reducing the efficiency of flashing installation, requiring additional material and fabrication time, and prone to leakage and water damage of roofs and exterior walls, so as to improve the efficiency of installation and reduce the cost of time and labor. , the effect of preventing moisture seepag

Inactive Publication Date: 2006-03-16
ADVANCED BUILDING PRODS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0007] For the reasons stated above, it is the object of the present invention to provide a corner flashing assembly that provides a water-impermeable seal around the corner at the base of a foundation wall that is easily adjustable to accommodate variations in the dimensions of construction blocks. It is a further object to provide such a corner flashing assembly that is easily and economically manufactured.
[0008] The objects of the invention are achieved by providing a corner flashing assembly that fits neatly around the inside or outside corner of a building wall. The corner flashing assembly according to the invention comprises an upper corner piece and a lower corner piece. Each corner piece is shaped such that it neatly fits around the contour of the corner and has a vertical and a horizontal section. The horizontal section of the lower corner piece provides an apron on the foundation base at the base of the corner; with the vertical section extending upward over the wall face of perhaps two courses of construction blocks. The horizontal section of the upper corner piece is placed on the top face of the upper block of the two courses, with its vertical section extending downward over the face of the construction blocks. The vertical section of the upper corner piece overlaps a portion of the vertical section of the lower corner piece. This overlap is great enough to allow adjustability and also, barring catastrophic flooding, to prevent moisture seeping in between the upper and lower corner pieces.
[0009] The corner flashing assembly is made of copper. Copper is a desirable material for use in flashing because it is water-impermeable, it forms a protective patina in the presence of oxygen that is desirable and has aesthetic appeal, and, most importantly, does not corrode under the influence of the acids and alkalines that are present in conventional construction materials. Ideally, sections of the corner flashing assembly that will come into contact with mortar are coated with an asphalt coating, which improves the adhesion of the mortar to the copper.

Problems solved by technology

Some areas of roofs and exterior walls are prone to leaks and water damage.
The disadvantage of the Edvardsen flashing is that the double fold requires additional material and fabrication time and provides greater bulk when the flashing is installed.
Because the dimensions of construction blocks typically used to construct foundation walls vary slightly from manufacturer to manufacturer, corner flashing is traditionally custom-fabricated off-site for a particular construction job, a costly and time consuming process.
Pre-cast corner flashing is known, but it has a disadvantage in that it is not adjustable to the varying heights of construction blocks.

Method used

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first embodiment

[0014]FIG. 1 illustrates a corner flashing assembly 100 that protects an outer corner CO at a foundation base B of a foundation wall W against water and moisture. The corner flashing assembly 100 comprises a lower corner 110 and an upper corner 120. The lower corner 110 is constructed as a single piece of copper material that includes a lower vertical section 111 that wraps around the outer corner CO, a lower horizontal section 114 that forms a flat apron on the foundation base B, and a lower vertical fold 118 that extends along the lower vertical section 111. Forming the lower corner 110 by vertically folding a single sheet of material creates a corner gap 135 in the lower horizontal section 114 that is bounded by a left edge 115 and a right edge 116. A gap panel 145, i.e., a flat square piece of copper, is soldered to the left edge 115 and right edge 116 to form a continuous, gapless horizontal surface that, when the lower corner 110 is installed, forms a flat apron along the foun...

second embodiment

[0017]FIG. 2 illustrates the corner flashing assembly 200 that protects an inside corner CI at the base of a foundation wall W. The corner flashing assembly 200 comprises a lower corner 210 and an upper corner 220. The lower corner 210 is constructed from a single piece of copper material that includes a lower vertical section 211 that fits within the inner corner CI, a lower horizontal section 214 that lies flat on the foundation base B, and a lower vertical fold 218 that extends along the lower vertical section 211. The lower vertical fold 218 is formed by creating a 90-degree fold along the vertical axis of the lower vertical section 211. The lower horizontal section 214 is then formed by folding a portion of the sheet perpendicular to the lower vertical section 211. This second fold creates an excess of material in the lower horizontal section 214. The excess material may be folded and trimmed to form the square lower horizontal section 214. Ideally, the material is folded and o...

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Abstract

A corner flashing assembly for providing a moisture barrier at corners at the base of a foundation wall. The corner flashing assembly according to the invention comprises an upper corner piece and a lower corner piece. The upper and lower corner pieces are dimensioned such that, when installed, the lower edge of the upper corner piece and the upper edge of the lower corner piece overlap a certain distance, thereby allowing adjustability to accommodate varying dimensions of construction blocks, yet providing an effective moisture barrier. Portions of the corner pieces that will come into contact with mortar are coated with asphalt to improve the adherence of the mortar to the flashing.

Description

BACKGROUND INFORMATION [0001] 1. Field of the Invention [0002] The present invention relates to the field of flashing for the building industry. More particularly, the invention relates to corner flashing to seal corners at the base of foundation walls. [0003] 2. Description of the Prior Art [0004] The use of flashing to protect buildings against water damage is well-known in the construction industry. Some areas of roofs and exterior walls are prone to leaks and water damage. These areas include an intersection between a chimney or window and a roof surface. Flashing, generally formed from a thin sheet of water-impermeable material, is used to protect a structure from damage by water. Edvardsen (U.S. patent appl. Pub. 2004 / 0103592 A1) discloses a two-part roof flashing kit for a roof-penetrating structure with two flashing portions that are adjustable to allow for use with roof penetrating structures of varying dimensions. Each of the two parts has a fold of material and the two pa...

Claims

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Application Information

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IPC IPC(8): E04D13/14E04D1/36E04D3/38
CPCE04B1/66E02D31/02
Inventor LOLLEY, KEITH A.ROY, KENNETH A.
Owner ADVANCED BUILDING PRODS
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