# US 6,224,700 B1 · Methods for waterproofing architectural surfaces

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- Number: US 6,224,700 B1
- Document ID: US6224700B1
- Status: Granted
- Kind: B1
- Application number: 09/189,662
- Filed: 1998-11-11
- Granted: 2001-05-01
- Earliest claimed: 1998-11-11
- Assignees: Mar-Flex Systems, Inc.
- Inventors: Brett Oakley
- Web page: https://patentgrep.com/patent/US6224700B1

## CPC

- E04B 2/707: {obturation by means of panels}
- E04B 1/644: {Damp-proof courses (in combination with lintels E04C3/02)}
- E04B 2002/565: {with a brick veneer facing}
- E04B: GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS (border constructions of opening in walls, floors or ceilings E06B1/00; {electromagnetic shielding H05K9/0001})

## Abstract

A method for waterproofing an architectural component comprises the steps of applying a waterproofing composition to the component above a grade line to form an non-swelling elastomeric membrane having a tacky exterior and pressing a flexible, non-porous polymeric sheet onto the tacky exterior of the elastomeric membrane. The polymeric sheet is preferably stronger than the elastomeric membrane so as to protect the elastomeric membrane from punctures or tears. Exemplary waterproofing compositions include solutions of thermoplastic elastomers such as styrene/butadiene block copolymer in volatile organic solvents. Exemplary polymeric sheets include two-ply cross laminated high density polyethylene sheets. Preferably, an upper edge of the polymeric sheet is secured to the architectural surface by means of mastic or fiberglass-backed adhesive tape. According to one embodiment, weep holes are provided in a brick wall laid in front of the architectural surface to provide drainage from the space between the brick wall and the architectural surface.

## Claims

### Claim 1

A method for waterproofing an architectural component above a grade line comprising the steps of:
a) applying to an exterior surface of said architectural component above said grade line a waterproofing composition, said waterproofing composition hardening to form a non-swelling elastomeric membrane over said exterior surface, said elastomeric membrane having a tacky exterior; and
b) pressing a flexible, non-porous polymeric sheet onto said tacky exterior, said polymeric sheet having greater strength than said elastomeric membrane.

### Claim 2 (depends on 1)

The method as recited in claim 1 wherein said step a) includes spraying said waterproofing composition onto said architectural component.

### Claim 3 (depends on 1)

The method as recited in claim 1 wherein said step a) includes airlessly spraying said waterproofing composition onto said architectural component.

### Claim 4 (depends on 1)

The method as recited in claim 1 wherein said step a) includes painting said waterproofing composition onto said architectural component.

### Claim 5 (depends on 1)

The method as recited in claim 1 wherein said waterproofing composition of said step a) is a non-swelling thermoplastic elastomer dissolved in a volatile organic solvent.

### Claim 6 (depends on 1)

The method as recited in claim 1 wherein said waterproofing composition of said step a) is a styrene/butadiene block copolymer dissolved in a volatile organic solvent.

### Claim 7 (depends on 1)

The method as recited in claim 1 wherein said polymeric sheet of said step b) is a two-ply, cross-laminated high density polyethylene sheet.

### Claim 8 (depends on 1)

The method as recited in claim 1 including the additional step of:
c) securing an upper edge of said polymeric sheet to said architectural component.

### Claim 9 (depends on 1)

The method as recited in claim 1 including the additional step of:
c) securing an upper edge of said polymeric sheet to said architectural component with a securing aid selected from the group consisting of mastic and waterproof adhesive tape.

### Claim 10 (depends on 1)

The method as recited in claim 1 including the additional steps of:
c) laying bricks adjacent said polymeric sheet; and
d) forming weep holes along a lowest course of said bricks.

### Claim 11

A method for waterproofing an architectural component above a grade line comprising the steps of:
a) spraying a waterproofing composition of a non-swelling thermoplastic elastomer dissolved in a volatile organic solvent onto an exterior surface of said architectural component above said grade line to form an elastomeric membrane having a tacky exterior;
b) pressing a flexible, non-porous polymeric sheet onto said tacky exterior, said polymeric sheet having a strength greater than said elastomeric membrane;
c) securing an upper edge of said polymeric sheet to said architectural component;
d) laying bricks adjacent said polymeric sheet; and
e) forming weep holes along a lowest course of said bricks.