Waffle foundations are an above-ground mat foundation system that is characterized by its concrete slabs, which, when arranged, resemble a waffle pattern. Additional concrete is then poured into the grooves between each slab. These foundations have become a popular choice due to their structural integrity, even over soft or rocky soil and can help provide load-bearing support over difficult terrain.
However, this building style also comes with unique challenges, especially when it comes to managing moisture. This style requires under-slab vapor barriers for waffle foundations, which not everyone realizes during the construction phase.
Need more details? Don’t worry, the team at Americover is here to break it all down for you:
What Is A Vapor Barrier?
Vapor barriers are used in construction to limit the amount of water vapor that’s allowed to travel up from the soil and into your concrete slabs. If left on its own, water vapor can lead to moisture buildup in your slabs as well as structural damage. This can then snowball into any number of problems, ranging from flooring issues to offensive odors and even mold growth on your property.
Related Article: Your Installation Guide to Underslab Vapor and Gas Barriers
Why Waffle Foundations Are So Challenging
When it comes to waffle foundations, their distinctive grid-like design can actually lead to more moisture buildup than a typical foundation would. That’s because the concrete slabs have open voids underneath them to help accommodate the terrain. These voids act as vents for the soil below, channeling evaporating moisture up into the slabs.
Related Article: Why Should I Install an Underslab Vapor Barrier?
The Right Vapor Barrier For Waffle Foundations Makes A Difference
But all hope isn’t lost. What if we told you there was a way to still enjoy the benefits of a waffle foundation without compromising on vapor protection for your property? The right vapor barriers for waffle foundations act as a protective shield, preventing moisture and ensuring the longevity of your structure. Under slab vapor barriers protect a building’s foundation from damaging environmental conditions like moisture, pests, extreme temperatures, and more.
Our Top Picks
At Americover, we’ve been helping clients choose the right plastic sheeting for decades, so we know a thing or two about vapor barriers for waffle foundations. Here’s a closer look at our top product picks for 2024:
Pro Crawl Anti-Mold Vapor Barrier with MPT™
The Pro Crawl Anti-Mold Vapor Barrier stands out as one of our customers’ top picks if you need vapor barriers for waffle foundations. This class 1 vapor barrier passes ASTM E1745 class A, B, and C standards. With a perm rating that blocks more vapor transmission than leading competitors, it provides exceptional defense against moisture.
VaporBlock® Plus™ 20 Mil Vapor Barrier
The VaporBlock® Plus™ 20 Mil Vapor Barrier is another highly-recommended choice, as it also passes ASTM E-1745 Class A, B, and C requirements. Its 20 mil thickness makes it highly effective in protecting against moisture, and it doubles as a gas barrier as well.
VaporBlock® Vapor Barrier
Our final pick is the original VaporBlock® Vapor Barrier. This high-performance under-slab vapor barrier has been a client favorite for years and boasts exceptional moisture blocking ability with a lighter price tag. It passes all ASTM E-1745 Class A, B, and C requirements, and is a fantastic option for waffle foundations.
Find The Right Vapor Barrier For Waffle Foundations With Americover
As an Americover customer, you will receive the personalized support of a dedicated account manager to simplify the ordering process and ensure the best solution for every one of your projects.
Our friendly, knowledgeable staff is here to answer your questions and fulfill orders Monday-Friday from 7 a.m. to 4:30 p.m. Pacific Standard Time. For more information or a free sample, call us at 760-388-6294 or visit our Contact Us page.