System and method for sealing joints between exterior wall panels

• US 20100071292A1
• Filed: 09/17/2009
• Published: 03/25/2010
• Est. Priority Date: 09/22/2008
• Status: Active Grant

• Current Assignee: Sanford Lloyd Futterman
• Original Assignee: Sanford Lloyd Futterman
• Inventors: Futterman, Sanford Lloyd
• Granted Patent: US 7,836,652 B2
• Time in Patent Office: Days
• US Class Current: 52/412
• CPC Class Codes: E04F 13/02 of plastic materials hardening after applying, e.g. plaster surface treatment in painting technique B44D; inorganic or bituminous masses C04B; organic plastics C08L ; implements for applying plasticised materials E04F21/02
• CPC Class Codes: E04F 13/04 Bases for plaster sub-ceilings with plaster-carrying means E04B9/06
• CPC Class Codes: E04F 13/042 Joint tapes
• CPC Class Codes: E04F 19/02 Borders; Finishing strips, e.g. beadings; Light coves for protecting edges of plaster E04F13/06
• CPC Class Codes: E04F 21/00 Implements for finishing work on buildings for working or treating building elements of stone or stone-like material B28D

Abstract

Buildings and walls are commonly constructed with exterior walls composed of specially treated engineered wood panels, cement panels, fiber cement panels, glass-matt-faced gypsum panels, and gypsum/cellulose sheathing panels. The spaces or edges between these exterior panels are sealed using the disclosed dual-tape-core joint treatment system and method of the present invention. After curing, a color matching acrylic-epoxy scratch coat or elastomeric primer followed by a textured finish coat is sprayed, brushed or rolled on the exterior panels.

Claims

1. A system for sealing the space between adjacent exterior wall panels, said system comprising:

a mastic placed in the space between the exterior wall panels;

a perforated foundation tape placed over the mastic in the space between the exterior wall panels;

a first mastic layer placed over and extending beyond the edges of said perforated foundation tape;

a finish tape having a width greater than said perforated foundation tape placed over said first mastic layer;

a second mastic layer placed over and extending beyond the edges of said finish tape.

2. The system as defined in claim 1 wherein the ratio of the width of said finish tape to said foundation tape is about 2:

1.

3. The system as defined in claim 1 wherein said mastic is an elastomeric acrylic sealant.

4. The system as defined in claim 1 wherein said perforated foundation tape is a semi-rigid polymeric tape.

5. The system as defined in claim 1 wherein said perforated foundation tape further includes fibers glued to the exterior surface thereof.

6. The system as defined in claim 1 wherein said finish tape is selected from a group including:

fabric, film, or a mesh/mat.

7. A method for sealing the space between adjacent exterior wall panels, said method comprising the steps of:

filling the space between the exterior wall panels with mastic;

placing a perforated foundation tape over the mastic between the exterior wall panels;

covering said perforated foundation tape with a first mastic layer;

placing a finish tape over said first mastic layer;

covering said finish tape with a second mastic layer.

8. The method as defined in claim 7 wherein the ratio of the width of the said finish tape to the width of said foundation tape is about 2:

1.

9. The method as defined in claim 7 wherein said mastic is an elastomeric acrylic sealant.

10. The method as defined in claim 7 wherein said perforated foundation tape is a semi-rigid polymeric tape.

11. The method as defined in claim 7 wherein said perforated foundation tape further includes fibers glued to the exterior surface thereof.

12. The method as defined in claim 7 wherein said finish tape is selected from a group including:

fabric, film, mesh/mat.

13. A two-layer tape for using over the space between exterior wall panels wherein the space between the exterior wall panels has been filled with a mastic, said two-part tape comprising:

a perforated foundation tape layer, said perforated foundation tape layer having a length dimension and a width dimension;

a finish tape layer having a length dimension and a width dimension, said width dimension being greater than the width dimension of said perforated foundation tape layer;

said finish tape layer being laid over and attached to said perforated foundation tape layer so that the length dimension of said finish tape layer is substantially parallel to the length dimension of said perforated foundation tape layer;

whereby when said two-layer tape is placed over the mastic filling the space between the exterior wall panels, the mastic will pass through the perforations in the perforated foundation tape layer and enter the space between said perforated foundation tape layer and said finish tape layer.