Concrete masonry units window and door flashing and installation
Concrete masonry units, CMU, windows and doors are flashed by applying a side flashing to the top and sides of the rough opening before blocking, applying a sill pan in the bottom of the rough opening, and then installing the window or door. Portions of the side flashings on the top and sides of the rough opening are then bent over the side and top window or door flanges so that a portion of the side flashings may be adhered or otherwise fastened to the flanges to provide a seal.
This application is related to provisional application No. 60/785,256 filed Mar. 23, 2006 by applicant and claims the priority date of that application.
This specification incorporates by reference the specification of co-pending U.S. patent application Ser. No. 11/621,618 (Provisional application No. 60/757,684) for “Apparatus and method for door and window side flashing” filed by applicant on Jan. 10, 2007.
FIELD OF INVENTIONThis invention relates to a door or window side flashing system, devices, and methods to direct moisture away from the inside of a CMU or Concrete Masonry Unit structure.
BACKGROUNDCMU or Concrete Masonry Unit, also called a concrete block, is a concrete (masonry) component for construction of certain type of walls. Buildings with exterior walls built with CMU are usually referred to as concrete block buildings or CMU buildings. Windows and doors are typically installed in CMU buildings with the assumption that the CMU construction materials are impervious to water. However, CMU materials are not impervious and thus water intrusion into the window/door rough opening may occur resulting in eventual water damage to the structure, including wood, insulation, drywall, and other materials. Water damage may also occur to the window or door frame, sill, or other structure.
SUMMARY OF INVENTIONThe current invention is a method and system for flashing to prevent damage by draining water to the exterior of the building. This drainage is accomplished by using proper flashing such as an extruded or other profile to seal against the water intrusion into the wall cavity and into the building structure.
These and other objects and advantages of the present invention are set forth below and further made clear by reference to the drawings, wherein:
The following elements are described in the specification and drawings:
CMU wall 102
Water migration paths 104
CMU rough opening 106
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- Rough opening sides 107, 108
- Rough opening top 109
- Rough opening bottom 110
Side Flash applied to upper portion of rough opening 151
Side Flash applied to side of rough opening 152, 153
Blocking applied to upper portion of rough opening 161
Blocking applied to side of rough opening 162, 163
Sill pan 200
Window 300
Window flange 301
Side Flash 400
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- rigid area of Side Flash 401
- flexible area of Side Flash 402
- fold grooves of Side Flash 403
- bent portion of Side Flash for interior of opening 404
This specification incorporates by reference the specification of co-pending U.S. patent application Ser. No. 11/621,618 (Provisional application No. 60/757,684 for “Apparatus and method for door and window side flashing” filed by applicant on Jan. 10, 2007. The '618 Application describes an extruded profile SideFlash™ from Suresill. Ltd. (www.suresill.com). Referring to
At step 1000, a side flash 151 is applied to the top portion of the rough opening.
At step 1100, side flash is applied to the sides of the rough opening.
At step 1200, blocking is applied to the top and side portions of the rough opening.
At step 1300, a sill pan is installed in the lower portion of the rough opening.
At step 1400, a window or door is installed in the rough opening.
At step 1500, the side flashing is bent over the side flanges of the window or door.
At step 1600, the side flashing is bent over the top flange of the window or door.
Building science recommends draining the moisture out of the wall assembly, and to the exterior of the building. In this embodiment, an extruded profile SideFlash™ (flashing) from Suresill. Ltd. (www.suresill.com) is constructed with a rigid portion that is retained within the rough opening prior to installation of the window unit and a flexible portion that is used to seal the window on the exterior surface frame.
Claims
1. A concrete masonry unit window structure comprising
- a rough opening comprising an interior, an exterior, a top, a first side, a second side, and a bottom;
- a top side flashing applied to the top of the rough opening;
- a first side flashing applied to the first side of the rough opening;
- a second side flashing applied to the second side of the rough opening;
- blocking applied to the top, first side, and second side of the rough opening;
- a sill pan installed in the bottom of the rough opening;
- a window installed over a portion of the sill pan and over a portion of the blocking, the window comprising a first side flange, a second side flange, and a top flange,
- such that a portion of the first side flashing is bent over at least a portion of the first side flange, and a portion of the second side flashing is bent over at least a portion of the second side flange, and a portion of the top side flashing is bent over at least a portion of the top flange.
2. The window structure of claim 1 wherein
- the first side flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the first side flange;
- the second side flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the second side flange; and
- the top flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the top flange.
3. The window structure of claim 1 wherein
- the first side flashing further comprises at least one fold groove.
4. A concrete masonry unit door structure comprising
- a rough opening comprising an interior, an exterior, a top, a first side, a second side, and a bottom;
- a top side flashing applied to the top of the rough opening;
- a first side flashing applied to the first side of the rough opening;
- a second side flashing applied to the second side of the rough opening;
- blocking applied to the top, first side, and second side of the rough opening;
- a sill pan installed in the bottom of the rough opening;
- a door installed over a portion of the sill pan and over a portion of the blocking, the door comprising a first side flange, a second side flange, and a top flange,
- such that a portion of the first side flashing is bent over at least a portion of the first side flange, and a portion of the second side flashing is bent over at least a portion of the second side flange, and a portion of the top side flashing is bent over at least a portion of the top flange.
5. The door structure of claim 1 wherein
- the first side flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the first side flange;
- the second side flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the second side flange; and
- the top flashing further comprises a rigid portion and a flexible portion, such that at least a portion of the flexible portion is bent over the top flange.
6. The door structure of claim 1 wherein
- the first side flashing further comprises at least one fold groove.
7. A method for sealing around a concrete masonry unit window installed in a rough opening having a top, first side, second side, and bottom; the method comprising
- installing a top side flashing on the top of the rough opening;
- installing a first side flashing on the first side of the rough opening;
- installing a first side flashing on the first side of the rough opening;
- installing blocking on the top, first side, and second side of the rough opening;
- installing a sill pan on the bottom of the rough opening;
- installing a window over at least a portion of the sill pan, top blocking, first side blocking, and second side blocking, the window having a top flange, a first side flange, and a second side flange; and
- bending a portion of the first side flashing over at least a portion of the first side flange;
- bending a portion of the second side flashing over at least a portion of the second side flange; and
- bending a portion of the top side flashing over at least a portion of the top flange.
8. The method of claim 7 wherein bending a portion of the first side flashing over at least a portion of the first side flange further comprises
- bending at least part of a flexible portion of the first side flashing over at least a portion of the first side flange.
9. The method of claim 8 wherein bending a portion of the first side flashing over at least a portion of the first side flange further comprises
- bending at least part of a flexible portion of the first side flashing at a fold groove.
Type: Application
Filed: Mar 23, 2007
Publication Date: Sep 27, 2007
Inventor: Mishko Teodorovich (Austin, TX)
Application Number: 11/690,130
International Classification: E04D 1/36 (20060101); E04D 13/14 (20060101);