SUMMER 2006 NEWSLETTER

$2 Million Waterproofing & Concrete Restoration Project Adds Value for Owner & Tenants

Parking garage waterproofing and concrete ENGINEER’S REPORT restoration isn’t the most glamorous type of DETAILS DETERIORATION construction project, but key improvements can greatly impact the usability and safety of a A well-known Fortune 100 company in facility. That in mind, waterproofing and concrete has been experiencing the effects restoration can do more than bring a facility up of two deteriorating parking garages on their to structural standard; it can also serve the campus near the Galleria. As happens to most functional needs of owners and their tenants. parking structures over time, parts of the concrete and steel decking, as well as the walls, Due to their utilitarian nature, parking structures began deteriorating due to rust forming on parts are sometimes ignored, yet they can pose a of the steel within. Given the nature of the unique set of expensive repair problems if not problems, a structural engineering firm was maintained properly. brought in to evaluate Heavy automobile the overall condition traffic wears out the After of the garages. The concrete surfaces and engineer’s report deteriorates the joints found several areas that are designed to of the concrete drive provide both parking and surface along with waterproof protection to the underlying steel the occupants of the decking in critical garage. The heavy load need of repair. imposed by a large The report also number of parked detailed other vehicles, wet weather, Before issues related to hot temperatures and the waterproofing extreme cold can further of the concrete Parking deck before and after waterproof traffic coating was applied. damage a garage components that INSIDE structure. The parking garage’s concrete, steel needed to be addressed to ensure structural this issue decking and expansion joints, therefore, must be integrity and to help prevent further deterioration adequately maintained. If neglected, the short- and of the structure. long-term effects of deferred maintenance can be very costly. ( Continued pg. 2...see GARAGE RESTORATION) Waterproofing & Concrete Restoration...... 2

Back to Basics...... 3 & 5 CONSULTANT’S Back To Basics: Factors to Consider When Designing a Building Envelope Preparing for Severe CORNER: Of the many factors that must be considered in the design of a Weather ...... 4 building envelope, there are a few basic truths of science with which architects, engineers and contractors must deal. When Safety Program ignored, these cause the most problems with waterproofing. Recognized ...... 5

A building envelope is comprised of the walls, roof and floor foundation (including below-grade walls and slabs-on-grade). By Claire McIntyre, AIA Projects in Progress...... 6 McIntyre & McIntyre, Inc. Different exposure factors for each of these lead to different ( Continued pg. 3...see BACK TO BASICS) WWW.CHAMBERLINLTD.COM ( GARAGE RESTORATION Continued from pg. 1 ) PHASE III BEGINS Before Sr. Project Manager Todd Eads with The original plan was to color code each Jones Lang LaSalle, led the building parking level by painting one wall on infrastructure reinvestment, which, in each floor a different color, but after the addition to the garage restoration, building owners saw the vast improvement included a complete air handling and that the color made, they chose to have HVAC renovation, elevator upgrades and all remaining walls in the garage painted various external repairs. “The garages white to provide a lighter, more were the single biggest portion of the secure environment. campus improvement project at over three million dollars,” said Eads who When construction was completed in hired Turner Construction as the general December of 2005 on Garage A, the contractor for the rehabilitation project. building owners were pleased with their beautifully restored parking garage and Chamberlin has completed many wanted Garage B to be equally as secure successful projects with Turner over for their employees, protected from the the years including The Calpine Center, After elements and structurally sound. “The vote Hilton Americas Convention Center Hotel was unanimous to utilize the Turner and and the Galleria Expansion project. Chamberlin team on Garage B,” said Because of Chamberlin’s proven track Eads. “We learned some valuable lessons record and wide range of waterproofing on Garage A and it was important for us to services, Turner entrusted the firm to be apply that knowledge to the second garage the single source contractor for the with a team that understood the project entire garage restoration project, with and our expectations from the beginning.” the exception of the electrical work. SECURE AND CONCRETE AND STRUCTURALLY SOUND STEEL DECK REPLACEMENT Garage B is an exact replica of Garage A Work commenced on Phase I of with very similar problems, so Turner and Garage A in November of 2004. Chamberlin knew exactly what to expect. Chamberlin began by removing and Steel deck before and after waterproofing and restoration. Restoration on Garage B began in March replacing deteriorated areas of the 2006 and is anticipated to be complete concrete and steel deck on five levels several weeks ahead of schedule in and patched portions of the concrete October of 2006. Upon completion, walls that were crumbling. All cracks in Chamberlin will have performed over the concrete that were less severe were $2.3 million of waterproofing and concrete strengthened with epoxy injections. restoration on both garages. “Our Metal doors and frames were replaced success on this project is due to our as well as sections of the metal deck wide range of waterproofing services, and various other steel components. experience and teamwork from everyone involved,” said Shane Hubbard, Phase II included pressure washing Chamberlin Senior Project Manager. all surfaces, vehicular traffic coating, striping parking spaces, caulking the Chamberlin is a single source provider entire garage and installing a new of complete garage restoration services. perimeter cable barrier system to Technically speaking, we provide the comply with revised building code expertise and attention to detail necessary restrictions. Chamberlin crews also to complete restoration projects up coated the steel joists attached to the to the highest standards. On a more underside of the deck to protect it from personal level, we’re proud that offering further oxidation. Upon completion, they this service contributes to creating a moved on to Phase III of the project: safer, more friendly structure for those interior concrete wall painting. Applying vehicular traffic coating to parking deck. that use the garage.

HOUSTON 2 ACTIVE MEMBERS OF:

AMERICAN SUBCONTRACTORS ASSOCIATION ( BACK TO BASICS Continued from pg. 1) designs and materials being selected Materials expand and contract with to waterproof each separate area. changes in temperature. Some materials are more stable than BASIC TRUTHS OF SCIENCE others, however. These differentials in temperature movements can stress In order to create a weatherproof the skins of walls and roofs resulting building envelope, the design in small microscopic cracks or large professional and contractor must not openings. Even small cracks in forget the fundamental laws of physics masonry or plaster walls will allow and thermodynamics. No matter what water intrusion from capillary action or new materials are developed, there rain being blown directly into the wall. are some basic truths that have always been and always will be Allowances must be made for these actions that must be accommodated factors to design and construct an in building envelope design and exterior veneer wall that will function Graphic A illustrates some basic truths of science. construction. Some of them are properly. Graphic A (at right) illustrates Source: National Institute of Building Sciences Whole Building as follows: these truths. Design Guide Web site article by Daniel J. Lemieux, AIA and Paul E. Totten, PE, Wiss, Janney, Elstner, Associates Inc. Water will seek the lowest level. If it DOUBLE INDEMNITY http://www.wbdg.org/design/env_wall.php happens to “bottom out” at a window or door head or sill or at the base of Okay, so we’ve established that water a wall cavity, then it must be directed will get through the exterior veneer and back to the exterior before it can into the wall cavity, whether due to come in contact with the interior movement cracks, blowing wind and wall components. capillary action or construction error. Now what? The answer is to provide a Wind creates differential pressures. secondary weather resistant barrier as These pressures can drive rain a drainage plane to the flashing that through a seemingly waterproof directs water back out. exterior wall and into a building interior. Air travels from high pressure to low The exterior veneer is the first line of pressure, and that pressure can drive defense for walls. It should not be quite a lot of water through very small relied upon as the only protection cracks in an exterior veneer. from the elements. Photo 1 (at right) illustrates what not to do. In the “old Air molecules move from warm to cold. days” this secondary wall membrane Photo 1: Construction Don’t! No Secondary Warm air holds more moisture than was often building paper (asphalt weather barrier and open joints in sheathing are an open invitation for water damage. Notice the lack of cold. Condensation forms when warm, impregnated sheets) lapped shingle flashing at the base of EIFS and the top of the stone. moist air is cooled to the dew point style to shed water. New products And look at all that mortar in the cavity space! (the temperature at which the air and code regulations have made the This building leaked like a sieve. cannot hold the water molecules). selection process more complicated. The dew point temperature is dependent on the relative humidity Once in the cavity space, water can of the air. Areas of low humidity will come in contact with the sheathing have a lower dew point temperature layer (the outside face of the wall than areas of high humidity. The arid behind the veneer) and travel to the desert air must cool to a much lower insulation, the interior wall layer and temperature to condense moisture interior base molding. Water reduces than humid air of a tropical climate. the effectiveness of insulation. If any of these materials are organic (such Water travels by capillary action. as the paper layer on gypsum board, Wind can send rain into cracks in plywood sheathing, wood base, wood a masonry or plaster veneer. Skin studs), mold can develop. friction between the sides of the crack and the water molecules allows the We all have heard a lot about mold Photo 2: Construction Don’t! No flashing on shelf angle moisture to be wicked into the in the last several years. This has above window head. More mortar clog. Water ran down material and into the wall. become a particular problem as codes this sheathing face to window head and into building. required buildings and homes to be ( Continued pg. 5...see BACK TO BASICS )

3 Preparing for Severe Weather

If a hurricane or tornado tore off your roof today, would you know what to do? We do!

Here are six recommendations to help you prevent potential severe damage to the roof of your buildings that may develop from high winds and heavy rain that could be generated by hurricanes, tropical storms or tornados:

1. Airborne objects cause the most damage to buildings 3. Proper drainage of your roof system is critical. Clean during high winds. Walk your roof and remove all all gutters and check downspout drainage. debris that might become airborne. 4. Many roofs are lost to high winds because the 2. Severe ponding of water on roofs can lead to total roof perimeter sheet metal has not been adequately collapse. Check all drains and clean all debris in and secured. Inspect metal coping and secure all loose around them to maximize water runoff from the roof panels and joints. during periods of heavy rains. Keep in mind that the dead-load weight for one gallon of water is equal to 5. Critical components of mechanical equipment can be 8.33 pounds. A 200 sq. ft. pond on your roof at an lost during a storm if not properly secured. Secure all average depth of three inches increases the dead-load HVAC access panels and loose parts. bearing weight upon a structural deck system close to 3,000 pounds. This weight can be concentrated in 6. Large projectiles can cause a huge amount of damage a relatively small area in and around the drains. This during severe storms. Secure all common area items condition can significantly decrease the designed such as trash containers, benches, urns, etc. that are safety load that was intended for the structural decking not secured to the property. system and has been the major contributing factor in roof collapses in the past.

Chamberlin technicians are available the material necessary to temporarily ultimately protect your building to our clients 24 hours a day, stop the water from entering your and tenants when severe seven days a week. In the event of building and minimizing damage weather strikes. a roofing emergency we can survey to the contents. your property, assess possible damage and make any necessary Call your local Chamberlin office temporary repairs within 24 hours or today to create an emergency plan less depending on the severity of the and secure priority service for your storm and the volume of requests urgent roofing and waterproofing for help. We keep an inventory of needs. A little preparation now will

4 ( BACK TO BASICS Continued from pg. 3) Chamberlin made “tighter” in an effort toward SELECT & INSTALL WISELY better energy efficiency. Blocking Safety Program is air infiltration is great for energy The design professional and efficiency. However, if these air contractor must be fully informed Recognized by ABC barriers also act as a vapor barrier, in order to make a proper selection there can be trouble. regarding the installation of secondary weather resistant Although effective as air barriers, membranes and flashing materials. vapor barriers can trap moisture in Know the manufacturer’s intended the wall. All vapor barriers are air use of the material and any barriers but all air barriers are not product restrictions. And follow vapor barriers. Water molecules are the manufacturer’s instructions larger than water vapor molecules for installation. therefore a particular material can be an effective air barrier yet not BASICS FOR OWNERS block moisture vapor. All of this must be considered when selecting Owners, know your design and installing a secondary weather professional and your contractor. resistant membrane to provide An experienced architect, engineer double protection. and contractor can mean the difference between a successful FLASH, FLASH, FLASH project and a headache. Project Managers Bryan Payne and Chad Morgan receive the Gold STEP Award. Somehow flashing has been forgotten The difference is in the details and by some design professionals and the attention to the basics. Let’s all contractors. This critical element get back to basics. Happy building! Chamberlin recently received the Gold must be installed to direct water Safety Training and Evaluation Process outward. Photo 2 (on pg. 3) shows Claire McIntyre holds a B.S. in Architectural (STEP) Award from the ABC National Safety a shelf angle above a window head Engineering from the University of at Committee. STEP recognizes the efforts without flashing installed. Austin and is also a licensed architect and of ABC members that strive to achieve real estate broker. She has been professionally effective safety practices within their firms. Flashings begin at the exterior involved in the design and construction It also provides contractors with a tool to wall sheathing six to eight inches industry for over 30 years. Claire was one above the base of walls, heads of objectively evaluate their safety programs, windows and doors and above shelf of the first to qualify by examination as policies, procedures and training. angles and extend across the cavity a Certified Construction Specifier by the space. The flashing top must be Construction Specifications Institute. The STEP program is industry practices overlapped by the secondary developed and written by contractors drainage membrane. The outside McIntyre & McIntyre, Inc., her Austin, Texas for contractors. It gives companies an edge of the flashing material must firm with her husband/partner, provides organized approach for analyzing and extend under the exterior veneer. architectural and engineering (structural, developing safety and loss prevention mechanical, electrical and plumbing) programs. It also provides a valid and Weep holes must be provided through design services for commercial buildings. unbiased method for measuring safety the exterior veneer at regular intervals Their practice has included work on program improvements. to allow water to drain. And, please, schools, hospitals, parking garages, office joint sealants are not a substitute buildings, apartment buildings, high rise for flashings. At Chamberlin, we believe that no project construction and expert witness testimony. can be considered successful if one of EIFS (Exterior Insulation & Finish our people is injured or if our client’s System) has received much notoriety Claire can be reached at 512-699-9912 property is damaged during the course from involvement in water intrusion or [email protected]. of our work. That is why we continually and mold lawsuits. The problem is strive to address the constant challenge not inherent with the EIFS, but with of working safely by providing on-going the lack of flashings and drainage. safety education to all of our field These errors occur with all types of operations teams on the job and in materials, not just EIFS. Water will the classroom. get in and it must be directed out by the flashings.

5 PROJECTS IN PROGRESS

MERCY HEALTH SYSTEMS – Rogers, AR CLEAR LAKE HEART HOSPITAL – Webster, TX New Construction Roofing & Waterproofing New Construction Roofing Contract Amount: $1,300,000 (approx.) Contract Amount: $950,000 (approx.) LOCATIONS: Owner: St. Mary-Rogers Memorial Hospital Owner: HCA - The Health Care Company Architect: Perkins & Will Architect: Perkins & Will Call the nearest local office General Contractor: J.E. Dunn Construction Company General Contractor: DPR Construction or 1-800-749-1432 Scope of Work: Modified Bitumen roofing system, flashing and sheet Scope of Work: Modified Bitumen roofing and architectural sheet metal metal, wood blocking, water repellents, cold-applied waterproofing, Project Description: Hospital with 11 roof elevations dampproofing and joint sealants and pedestrian bridge HOUSTON Project Description: Eight-story hospital 7510 Langtry CAUSEWAY PLAZA – Metaire, LA Houston, Texas 77040 DALLAS MORNING NEWS – Dallas, TX Remedial Waterproofing Ph. (713) 880-1432 New Construction Waterproofing Contract Amount: $250,000 (approx.) Fax (713) 880-8255 Contract Amount: $100,000 (approx.) Owner: The Feil Organization Owner: Dallas Morning News, LP Architect: Israel Berger & Associates, Inc. Architect: The Austin Company General Contractor: Charles C. Brandt Construction Co. DALLAS/FT. WORTH General Contractor: Austin Commercial Scope of Work: Remedial caulking, elastomeric coating and wet-glazing 2346 Glenda Lane Scope of Work: Sheet waterproofing, concrete sealer, joint sealants, Project Description: Six-story commercial office building renovation Dallas, Texas 75229 Ph. (214) 273-9110 / (817) 237-1927 fire-stopping, epoxy flooring, expansion joints and site paving sealant Fax (214) 273-9120 / (817) 237-2676 Project Description: Newspaper collating facility FRITZ G. LANHAM FEDERAL BUILDING – El Paso, TX New Construction Waterproofing JESSE H. JONES LIBRARY – Houston, TX Contract Amount: $300,000 (approx.) AUSTIN Remedial Waterproofing Owner: City of El Paso 204 West Powell, Bldg. 1, Ste. C Contract Amount: $450,000 (approx.) Architect: BPLW Architects & Engineers, Inc. Austin, Texas 78753 Owner: City of Houston General Contractor: Caddell Construction Ph. (512) 275-1600 Architect: Prozign Architects, Inc. Scope of Work: Architectural expansion joint system, pond liner, Fax (512) 275-1603 General Contractor: 3D/International pavement joint sealants, cold-applied waterproofing, water repellents, Scope of Work: Hot fluid-applied waterproofing, concrete rehabilitation, fire-stopping and sealants epoxy resin injection, joint sealants and temporary waterproofing Project Description: Eight-story El Paso federal courthouse building SAN ANTONIO Project Description: Restoration of Public Library MESQUITE SPECIALITY HOSPITAL – Mesquite, TX 1999 Gulfmart, Ste. 528 HREVEPORT ONVENTION ENTER OTEL – Shreveport, LA New Construction Roofing San Antonio, Texas 78217 S C C H Ph. (210) 822-6536 New Construction Waterproofing Contract Amount: $250,000 (approx.) Fax (210) 822-8211 Contract Amount: $350,000 (approx.) Owner: Ernest Health, Inc. Owner: City of Shreveport Architect: Perkins & Will Architect: HCI Architecture, Inc. General Contractor: M.J. Harris, Inc. General Contractor: Walton Construction Company, L.L.C. Scope of Work: TPO roofing system and sheet metal OKLAHOMA CITY Scope of Work: Paver system, caulking and fire-resistant joint systems Project Description: Three-story long-term acute care hospital 4310 SW 33rd St. Project Description: 12-story hotel and convention center Oklahoma City, Oklahoma 73119 EVON NERGY ALL – Norman, OK Ph. (405) 680-0506 D E H Fax (405) 680-0508 PATIENTS MEDICAL CENTER – Pasadena, TX New Construction Waterproofing New Construction Roofing Contract Amount: $400,000 (approx.) Contract Amount: $450,000 (approx.) Owner: University of Oklahoma Owner: Patients Medical Center, Ltd. Architect: Miles & Associates Also licensed in Architect: Ascension Group Architects General Contractor: Boldt Construction Arkansas and Louisiana General Contractor: Rogers-O’Brien Construction Company, Ltd. Scope of Work: Dampproofing, waterproofing, fire-stopping Scope of Work: Single-ply EPDM roofing system and sheet metal flashing and joint sealants Project Description: 93,000 sq. ft. hospital and professional building Project Description: College of Engineering building on the OU campus

SPECIALTY CONTRACTING SERVICES: ROOFING/SHEET METAL WATERPROOFING/CAULKING BUILDING/GARAGE ROOF MAINTENANCE/LEAK REPAIR • BUR • Joint sealants RESTORATION •Roofing & waterproofing expertise • EPDM • Membrane waterproofing • Concrete/Masonry restoration • Roof & waterproofing surveys • Modified Bitumen • Elastomeric wall coatings • Exterior cleaning & coating • Custom roof maintenance plans • PVC/TPO Thermoplastic •Traffic coatings • Epoxy & grout injection • Maintenance budgeting assistance • Metal standing seam • Expansion joints • Bearing pad replacement • Service 24 hours/365 days a year • Roof related sheet metal • Dampproofing/flashing • Structural repair •Free estimates • Gutters/downspouts •Water repellents/metal flashing • Paver repair & replacement