Fluid Applied Air Barriers: 10 Benefits for Commercial & Residential Construction
The numerous benefits of a correctly applied, high-quality fluid-applied air barrier (FAAB), like Bautex AMB 20, in commercial and residential construction, guarantee a structure that is durable, energy-efficient and healthy. A further advantage of the Bautex AMB 20 FAAB, over other FAABs, is the Bautex AMB 20’s flexibility in the timing of application.
Air and Moisture Control Methods for Commercial and Residential Construction
Builders of both commercial and residential structures utilize several methods to control moisture and air infiltration within a wall system, including FAABs, commercial and house wraps, peel and stick membranes and laminated gypsum board with taped seams. However, there are limitations to some of these products.
Commercial and House Wraps: Windy days pose problems for commercial and house wraps because they are susceptible to damage when flapping in the wind. Wraps also have many joints and are prone to penetrations through the wall that may not receive proper attention.
Laminated gypsum board: Laminated gypsum board with taped seams is simple to apply; first, the board goes up, and the next and last step is to tape the seams. The problem with this method is the longevity of the seam tape is unknown.
Peel and stick membranes: Peel and stick membranes are the most expensive of all the products, including fluid-applied air barriers.
FAAB — The Better Option for Moisture Control in Commercial and Residential Construction
Fluid-applied air barriers offer many performance benefits and are an excellent option over commercial and house wraps, peel and stick membranes and laminated gypsum board with tape seam.
Ten Benefits of Fluid Applied Air Barriers For Commercial and Residential Construction
Fluid-applied air barriers prevent air leakage which lessens energy costs and condensation and improves occupant’s comfort.
Fluid-applied air barriers create a seamless moisture barrier. A seamless moisture barrier reduces installation errors that can cause holes, tears, or lap joints.
Fluid-applied air barriers protect the sheathing and rough openings from weather damage during and after construction, which minimizes repair or replacement costs.
Fluid-applied air barriers are simple to install and reduce labor costs because application of FAABs needs no special tools or skills.
Fluid-applied air barriers are durable and will not tear or lose its effectiveness when exposed to outside elements during and after construction.
Fluid-applied air barriers provide structural and full adherence, which creates rigidity and stability against strong wind events.
Fluid-applied air barriers double as an air barrier and moisture barrier in the wall assembly.
Fluid-applied air barriers allow for pressure-equalized or pressure-moderated wall design, which lessens the risk of rainwater penetration through the wall system.
Fluid-applied air barriers are less expensive than peel and stick membranes.
Most Fluid-applied air barriers including the Bautex AMB 20 are water based so safe to use and easy to clean-up.
Bautex AMB 20 — A Best Practice for a Fluid-Applied Air Barrier
There are many fluid-applied air barriers products on the market today, which differ mainly in their thickness. The Bautex AMB 20 fluid-applied air barrier falls in the middle for thickness. Bautex AMB 20 works exceptionally well on roughly textured products, like Bautex Blocks, but also on other wall systems like concrete masonry units, (CMU), wood and DensGlass sheathing.
The Bautex Block is composed of polystyrene and cement and creates a very thermally efficient product. However, because the Bautex Block is porous with dimpling in the block, it requires an air and moisture barrier material, like the Bautex AMB 20, to ensure sufficient coverage.
Importantly, what sets Bautex AMB 20 apart from other fluid-applied air barriers is its flexibility in the timing of application. Contractors can apply the Bautex AMB 20 pre- or post-taping, or caulking of the wall. An attribute that is quite helpful since often project’s schedules don’t go as planned.
Bautex AMB 20 Air and Moisture Barrier
The Bautex AMB 20 product line is a single-component system sprayed directly to the exterior wall substrate in a single 40 – 45 mil wet coat. Application of Bautex AMB 20 to Bautex Block, concrete, concrete block (CMU) or exterior sheathing materials using a standard airless spray system is quick and efficient.
Application of the Bautex AMB 20 fluid-applied air barrier on the Bautex Block Walls ensures the commercial or residential building’s envelope has four control layers: bulk water rejection, air infiltration, water, and vapor permeability, and thermal.
Notably, the thermal component of the Bautex Wall system provides a tremendous amount of insulation power that is two and a half times what the 2018 energy code requires in Central Texas. Placement of the Bautex air and moisture barrier product on top of the Bautex Wall is the last step to providing both bulk water rejection and protection from air and moisture infiltration.
The many benefits a high-quality fluid-applied air and moisture barrier, like Bautex AMB 20, in commercial and residential construction, ensure moisture and air management in wall assemblies. Proper application of the FAAB is also essential to the integrity of the structure, indoor environmental quality, and energy efficiency of commercial and residential buildings. Please visit Bautex Wall Systems for more information on the benefits of fluid-applied air barriers.
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