Rainscreens: 5 Things You Need To Know to Protect your Walls

What is a Rainscreen? How does a Rainscreen prevent moisture problems? Do you need a rainscreen? Take 2 minutes to learn about rainscreens and how they can prevent stucco & other moisture problems. Keep learning at https://www.MTIdry.com/rainscreen-101


In a typical rainscreen system the exterior deflects most of the moisture. A gap of at least 1/8″ behind the exterior allows any moisture that penetrated the rainscreen to drain out of the wall. Behind the drainage gap and on top of the sheathing the weather resistive barrier protects against moisture intrusion into the wall system.

Why not just use a weather resistive barrier (WRB)? Without the rainscreen drainage gap you don’t have a rainscreen system. Without the gap capillary action can hold moisture against the WRB, and find its way into imperfections and penetrations in the WRB, including at fasteners. Once water gets behind the WRB it has few opportunities to get out, and creates an environment that promotes mold and rot on the wall assembly. Using a rainscreen drainage product such as Sure Cavity ensures that there is a drainage and ventilation gap so that liquid water can drain out of the wall, preventing moisture related damage.

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Moisture Intrusion (Damp) & Mould Inspection

Here is the video clip from a recent home inspection we did where moisture intrusion and damp conditions were a big problem. The moisture ingress in this case was conducive to mould growth which necessitated the need for further air quality mould testing on that building interior. www.homeinspection.co.za

Stucco Moisture Intrusion – 763-546-1100 – Minneapolis MN

http://barrier-construction.com 763-546-1100 Moisture Intrusion Repairs – Minneapolis MN

Barrier Construction

At Barrier Construction in MN, it is our objective to educate our clients on the options available to you in the industry place, presented in a good, better or best value scale and allow you the home owner or buyer or home seller to make an informed decision on the market value of the repair strategy and selecting the best contracting partner for the job.

As it pertains to stucco and moisture intrusion issues, as a general rule, houses aging from the early 80’s until 2006 tend to be at the heart of the problem.
Although there is a stigma related to stucco homes, its important to note that other cladding’s might be affected also (Brick, stone, Fiber Cement, Engineered Wood, Cedar or Masonite, to name a few).

Roof structure Terminations with inadequate of (or incorrectly installed) kick out flashing’s tend to be locations with the highest failure rate.

Other areas like wood deck ledger, pillars, at grade terminations and minor breach areas in the cladding can have issues.

In our extreme Minnesota environment, bulk water (rain storm and melting snow) can be the major cause but airflow, humidity and water vapor can cause problems as well. Frost Pockets can show up in rim cavities, crawl spaces and attics if vapor and air flow is not taken care of properly by the proper mix of materials and construction.

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