DOWSIL™ Case Study Cornish Commons – Seattle, Washington

Cornish Commons residence hall with unique rainscreen design - Seattle, WA
Cornish Commons residence hall with unique rainscreen design – Seattle, Washington

A premier college for the visual and performing arts, Cornish College of the Arts’ main campus is located in Seattle’s popular South Lake Union neighborhood, where the 20-story Cornish Commons opened in 2015.

The new residence hall and academic building includes a unique rainscreen design featuring 3/16-inch thick architectural aluminum cladding on cold-form framing. The innovative building design boasts thermal performance 40% better than required by current Seattle Building Code.

Cornish Commons’ Challenge

To achieve its ambitious thermal performance, the rainscreen design includes 2-inch, continuous R-8, exterior insulation to supplement the R-32 interior batt/cavity insulation. But that created additional challenges to be compliant with the Seattle Building Code, which dictates use of insulation outboard of the metal framing. The proposed design needed an air barrier with high permeability to ensure water vapor was not trapped in the wall cavity.

Additionally, staying on schedule – in spite of challenging Seattle weather conditions – was critical. Minimizing product incompatibility issues also was important.

Cornish Commons’ Solution

Ankrom Moisan Architects, Inc. selected the 100% silicone DOWSIL Silicone Air Barrier System to ensure enclosure airtightness performance, durability and compatibility.

When we learned about the option of a fluid-applied silicone air and water barrier, we realized that DOWSIL DefendAir 200 was ideal for our needs. Not only did the spray-applied product simplify installation and eliminate the need for traditional membrane materials, its high permeability ensured our design’s compliance with Seattle Building Code.

Eric Bressman, Architect, Ankrom Moisan Architects

Unitized Construction

To keep the Cornish Commons project on schedule, the design called for a combination of unitized rainscreen panels and traditional construction techniques. The use of unitized panels assembled off-site in a controlled manufacturing environment enabled continued productivity, regardless of weather.

An external cladding contractor’s licensed use of a patented, universal joint system (U.S. Patent 8,943,773) facilitated construction of the unitized panels. This system is designed with interlocking joints that mitigate improper installation conditions that increase the risk of failure.ß The joint system relies on DOWSIL sealants for enhanced performance.

The panels used DOWSIL silicones exclusively: DOWSIL DefendAir 200 as an air barrier and DOWSIL 791 Silicone Weatherproofing Sealant for unit sealing. The quick cure capability of the DOWSIL products helped keep unit assembly on schedule. The unitized rainscreen system was used from the third floor to the 20th floor – using 30 units per floor – with approximately 50,000 square feet protected by the DOWSIL Silicone Air Barrier System.

All-Weather Installation

Construction on-site continued into late fall, due in part to the low-temperature installation capability of DOWSIL DefendAir 200, which can be applied at temperatures as low as 20°F (-6°C).

The ability to use spray-applied product was much easier, said Jerry Jensen, Project Manager. Its cold-weather ability allowed us to continue construction into inclement fall weather.

In addition to the unitized rainscreen panels, on-site work totaling nearly 8,000 square feet used the DOWSIL Silicone Air Barrier System on the first and second floors.

Confidently Build A Better Barrier – Simple. Compatible. Silicones.

Because it is not uncommon to face challenges with varying interfacing construction materials, having a compatible all-silicone solution from Dow was appreciated and advantageous.

Having exclusively silicone products ensured compatibility. Rather than an ‘origami’ of incompatible materials around openings, having all-silicone materials simplified construction and eliminated uncertainty. It is straightforward. We can get answers from a single, trusted manufacturer, without unproductive back-and-forth exchanges with multiple suppliers. It’s helpful to have the continuity and support – and the confidence of warranty protection – from [Dow.]

Jerry Jensen, Project Manager, external cladding contractor

Additionally, the all-silicone compatibility of the DOWSIL Silicone Air Barrier System allowed materials to be applied in any order, eliminating sequencing delays and expenses.

Learn More About DOWSIL Silicone Air Barrier System

Dow High Performance Building solutions include proven and innovative materials for structural and protective glazing, weatherproofing, insulating glass, high-efficiency insulation, and window and door fabrication. Learn more about the DOWSIL Silicone Air Barrier System and other High Performance Building solutions from Dow.

Citations

Last Modified: October 12, 2019

How To Apply MasterEmaco® T 1060 Repair Mortar

The Master Builders Solutions brand of advanced chemical solutions for construction includes concrete admixtures, waterproofing solutions, concrete repair and protection solutions, performance grouts and performance flooring solutions. BASF Construction Chemicals division manufactures these construction products.

BASF Master Builders Solutions MasterSeal (Sonneborn)

MasterSeal® HLM 5000 Liquid, Cold-Applied Elastomeric Waterproofing Membrane SystemThe Master Builders Solutions brand of products includes MasterSeal® waterproofing sealants, watertight deck membranes, and air/water-resistive barriers; and the MasterKure® curing agents for concrete.

TYPE PRODUCT
Waterproofing MasterSeal HLM 5000 (Formerly: Sonoshield HLM 5000)
Dampproofing MasterSeal 610, 614, 615 (Formerly: Hydrocide 600, 700, 700B)
Concrete Finishing MasterKure HD 200WB (Formerly: Kure-N-Harden)
MasterKure HD 300WB (Formerly: Lapidolith)
Concrete Curing MasterKure
MasterKure CC 250SB (Formerly: Kure-N-Seal 25LV)
MasterKure CC 300SB (Formerly: Kure-N-Seal 30)
Joint Sealants MasterSeal NP 1 (Formerly: Sonolastic NP 1)Watch Application Video
MasterSeal NP 2 (Formerly: Sonolastic NP 2)Watch Application Video
MasterSeal SL 1 (Formerly: Sonolastic SL 1)
MasterSeal SL 2 (Formerly: Sonolastic SL 2)
MasterSeal NP 100Watch Application Video
MasterSeal NP 150 (Formerly: Sonolastic 150 VLM)
MasterSeal TX 1 (Formerly: Sonolastic TX 1)
MasterSeal CR 195 (Formerly: Sonolastic Ultra)
Primer MasterSeal P 173 (Formerly: Sonolastic Primer 733)Watch Application Video
Traffic Coatings MasterSeal Traffic 1500 (Formerly: Sonoguard)
MasterSeal 658 (Formerly: Tuf-Trac)

BASF Master Builders Solutions MasterProtect (Hydrozo)

MasterProtect® H 200 Clear, Water-Based, 20% Silane Penetrating SealerMaster Builders Solutions construction products include MasterProtect® penetrating water repellent sealers, to protect commercial buildings from water and chloride intrusion. These high-performance, clear, water-based silane/siloxane systems are designed for vertical concrete, brick and other masonry surfaces. Advantages include providing for the highest degree of water repellency, VOC compliant, environmentally friendly, breathable, does not alter surface appearance, and is easy to apply. Penetrating water repellent products are specifically designed for various concrete and masonry surfaces and environmental conditions. Applications include horizontal surfaces used on stadium floors, food courts, plazas, parking garages and other interior/exterior applications.

TYPE PRODUCT
Penetrating / Water-Based Sealers MasterProtect H 200 (Formerly: Enviroseal 20)
MasterProtect H 400 (Formerly: Enviroseal 40)Watch Application Video
MasterProtect H 107 (Formerly: Enviroseal 7)
MasterProtect H 177 (Formerly: Enviroseal Double 7 for Brick)Watch Application Video
Solvent Based Sealers MasterProtect H 440VT (Formerly: Hydrozo Clear 40 VOC)
MasterProtect H 440HZ (Formerly: Hydrozo Silane 40 VOC)
100% Silane Sealers MasterProtect H 1000 (Formerly: Hydrozo 100)
Graffiti Repellant MasterPel®

BASF Master Builders Solutions MasterProtect (Thoro)

MasterEmaco® A 660 Water-Based Acrylic Bonding and Modifying AdmixtureThe Master Builders Solutions brand of construction products includes the MasterProtect line of high-build acrylic coatings, elastomeric waterproof coatings, cement-based waterproof coatings (both for positive and negative side), concrete-repair patching compounds, concrete underlayments, plasters and stucco, and water repellents, water repellents, stains and paints, patching compounds.

TYPE PRODUCT
Maintenance of Concrete MasterEmaco® A 660 (Formerly: Acryl 60)
Concrete & Masonry Coating MasterProtect HB 400 (Formerly: Thorocoat)Watch Application Video
MasterProtect FL 749 (Formerly: Thoro Block Filler)
Elastomeric Coating MasterProtect EL 750 (Formerly: Thorolastic)Watch Application Video
MasterProtect EL 750AA (Formerly: Thorolastic A+)
Cementitious Waterproofing MasterSeal® 582 (Formerly: Thoroseal Foundation Coating)
Concrete Rehabilitation MasterEmaco N 426 (Formerly: Thorite Rapid Vertical)
Steel Reinforcement Primer & Bonding Agent MasterEmaco P 124 (Formerly: Emaco P24)Watch Application Video
Waterproof Coating MasterProtect C 350
Traffic Repair Mortars MasterEmaco T 1060 (Formerly: 10-60 Rapid Mortar)Watch Application Video
MasterEmaco T 545 (Formerly: Set 45)Watch Application Video
Product Selector Guide [PDF] BASF Master Builders Solutions Repair Mortar Product Selector Guide 4-6-17

*Chart NOT representative of ALL product offerings. Please call if you do not see what you are looking to find, (800) 347-5767.

Multi-Story concrete building under construction using Master Builders Solutions products
Master® Builders Solutions
University of Oregon Jordan Schnitzer Museum of Art Courtyard Reflecting Pool - Eugene, OR
Project: JSMA, University of Oregon – Eugene, OR

Last Modified: October 2, 2019

How To Apply MasterEmaco® T 545 Repair Mortar

BASF MasterEmaco T 545 Chemical Action Repair Mortar packaged in a 50 pound bag
BASF MasterEmaco T 545 Chemical Action Repair Mortar packaged in a 50 pound bag

Watch how to apply MasterEmaco T 545 chemical action repair mortar (Video Transcript). Then learn more about the materials, tools and accessories required to do the job safely and efficiently.

MasterEmaco T 545 Repair Mortar Application Video Transcript

  • Concrete must be structurally sound and fully cured. Surface should be prepared following current ICRI Guideline No. 310.2R surface preparation guide.
  • Add 4 pints (1.9 L) of potable water into a clean mixing container
  • Gradually sift in powder, 1/3 of the bag at a time, while mixing continuously at a slow speed
  • Mix material for 90 seconds to ensure a uniform, lump-free consistency
  • Work material firmly into the bottom and sides of patch. Avoid feather edging.
  • Placement time is approximately 5 minutes
  • Level MasterEmaco T 545 and screed to the elevation of surrounding concrete. Minimal finishing is required.
  • No curing is required. Protect from rain immediately after placing.
  • Refer to the MasterEmaco T 545 technical data guide for more information.

Repair Mortar Application Materials, Tools and Accessories

Materials, Tools and Accessories – Shown

  • Protective Gloves – 4-mil nitrile, disposable glove
  • Protective Clothing – Long-sleeve sweatshirt
  • MasterEmaco T 545 Repair Mortar – Very rapid-setting, chemical action, repair mortar
  • Mixing Container
  • Cordless Drill
  • Mixing Paddle
  • 2″ x 4″ Screed Board.

Precautionary Accessories – Not Shown

Refer to the MasterEmaco T 545 Safety Data Sheet (SDS) for more information.

  • Eye Protection
  • Face Protection
  • Respiratory Protection – In case of inadequate ventilation.

Citations

Last Modified: September 13, 2019

How To Apply MasterEmaco® P 124 Primer

BASF MasterEmaco P 124 Steel Reinforcement Primer & Bonding Agent packaged in a 6-gallon kit
BASF MasterEmaco P 124 Steel Reinforcement Primer & Bonding Agent packaged in a 6-gallon kit

Watch how to apply MasterEmaco P 124 steel reinforcement primer and bonding agent (Video Transcript). Then learn more about the materials, tools and accessories required to do the job safely and efficiently.

MasterEmaco P 124 Primer Application Video Transcript

  • Concrete must be structurally sound and fully cured
  • Remove all oxidation and scale from the exposed reinforcing steel in accordance with Technical Guide No. 310.1R
  • Surface to be repaired must be saturated-surface dry (SSD) prior to the application of MasterEmaco P124, when used as a bonding agent with ICRI Technical Guide No. 310.1R
  • Precondition all components to 70 degrees Fahrenheit (21 degrees Celsius)
  • Pour contents of Part A and Part B into a clean mixing bucket
  • Blend the components for 2 minutes
  • Slowly add all of Part C. Use the appropriate drill to thoroughly mix the components.
  • Apply MasterEmaco P 124 using a stiff brush or broom
  • Work the bonding agent thoroughly into the substrate
  • When applying to rebar, two coats of 10 mils (0.25 mm) are required
  • Protect the bonding agent from direct sunlight and temperature above 95 degrees Fahrenheit (35 degrees Celsius)
  • Refer to the MasterEmaco P 124 technical data guide for more information.

Primer Application Materials, Tools and Accessories

Materials, Tools and Accessories – Shown

  • Protective Gloves – 4-mil nitrile, disposable glove
  • Protective Clothing – Long-sleeve sweatshirt
  • MasterEmaco P 124 Primer – Water-based epoxy-cementitious bonding agent, also used to coat and protect rebar
  • Cordless Drill
  • Paddle – Jiffy Mixer or similar
  • Drill Attachment/Brush
  • Brush.

Precautionary Accessories – Not Shown

Refer to the MasterEmaco P 124 Safety Data Sheet (SDS) for more information.

  • Eye Protection
  • Face Protection
  • Respiratory Protection – In case of inadequate ventilation.

Citations

Last Modified: August 30, 2019

How To Operate An Albion® Engineering Rover Backer Rod Installer

Albion Engineering 1051-1 Rover Backer Rod Installer ready for operation
Albion Engineering 1051-1 Rover Backer Rod Installer ready for operation

Watch how to operate an Albion Engineering Rover Backer Rod Installer (Video Transcript). Then learn more about the materials, tools and accessories required to operate safely and efficiently.

Albion Engineering Rover Backer Rod Installer Operation Video Transcript

  • Achieve higher speed, quality, productivity, craftsmanship, and consistency than the traditional labor intensive method
  • Three passes are required along with downward force from the operator
  • [Supplemental Description:]
    • A single operator walks behind the Rover, pushing it forward. The Rover continuously inserts backer rod into a concrete floor expansion joint at a consistent depth, while feeding backer rod from an integrally mounted spool.
    • The operator breaks the backer rod at the end of a run and uses a Backer Rod Insertion Tool to finish the process of inserting and cutting the backer rod to length.
    • A similar procedure occurs at the start of a run. The operator uses the Rover to insert a short section of backer rod, stops, and uses the Backer Rod Insertion Tool to finish the new starting point, before resuming operation.
    • The single operator repeats the entire process for each section of concrete expansion joint.
  • Lightweight, portable and easy to set up
  • Larger wheel / hose for larger backer rod
  • Easy to get around manholes and other obstacles

Rover Backer Rod Installer Operation Materials, Tools and Accessories

Materials, Tools and Accessories – Shown

  • Backer Rod – Closed-cell, polyethylene foam, joint filler, 1/8 to 1-inch diameter
  • Albion Engineering Standard Model Backer Rod Insertion Tool – 640-5 with optional telescopic extension pole
  • Albion Engineering Rover Backer Rod Installer
  • Albion Engineering Backer Rod Insertion Tool – 640-4 Road Model with a reinforced resin handle to withstand rough use on horizontal surfaces.

Citations

Last Modified: August 23, 2019