Category: Membrane

World’s Longest Tunnel Relies on DELTA®

The dream of constructing a tunnel 1.4 miles beneath Switzerland’s Gotthard mountain range arose shortly after World War II. Now, that dream has become a reality. On June 29, 2016 the inauguration of the Gotthard Base Tunnel invoked thoughts of Hannibal crossing the Swiss Alps 2,200 years ago. Of course, this route runs under, not over, the […]

How to Keep Basements Dry: Use Membrane Capillary Breaks Above Footings

It’s important to separate a foundation wall from damp soil so that migrating moisture does not reach the structure’s framing and/or interior. To preempt the costly problems from ground moisture reaching foundations, contractors routinely employ these solutions: Asphalt dampproofing on the exterior surface of foundation walls A layer of polyethylene and crushed stone under the basement […]

Why You Should Use Air and Moisture Barrier with Foam Sheathing

  There are a number of reasons why you need an air and moisture barrier over foam sheathing. Airtight exterior wall systems are critical to maximizing energy efficiency and gaining LEED points. However, certain characteristics of foam sheathing conspire to compromise airtight construction. The solution? Use foam sheathing together with a high-performing, moisture-resistive air barrier. As building […]

Challenging Open Joint Cladding Design

  The pyramid is one of the earliest forms of structure for human occupation, spanning the ages of the megalithic tombs of ancient Egypt and Mesopotamia all the way to today where visitors can see an aesthetically gorgeous confluence of design, form, and function. The Denver Botanic Gardens’ new Science Pyramid is now open to the public. Though […]

Rainscreens Create Structure and Separation to Protect Against Moisture

Without proper ventilation and drainage, moisture can accumulate between the water-resistive barrier and siding of a building. A rainscreen separates the cladding from the building, allowing drainage and moisture evaporation. Ventilated rainscreens are a support system in the building envelope that separates the cladding from the building, allowing for proper ventilation and drainage. It does […]

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