Determining what moisture barrier product to use

Exterior Insulation and Finish System Installation Process

Determining what moisture barrier product to use

There are several moisture barrier products out there these days and determining which one to use has a lot to do with what type of EIFS application you are going to be using. Are you going to be applying over OSB, Brick, a Block wall. The budget can also a determining factor. There are two good products which are; a rolled on air and moisture barrier and a wrap. The wrap is known as StuccoWrap® which is a lot like traditional Tyvek® , but it has ridges in it to help drain moisture. And the rolled application which all manufacturers have a version of. I personal like to use Senergy’s Senerg-Shield-R® version of the product. Either way you go they both work great. It is mandatory that you use Stucco Flashing Tape around the windows and doors. Stucco tape is a moisture barrier tape that is a rubberized asphalt membrane and it’s top layer is polyester which Alpha Base Coat adheres to very well.

Sener-Shield-R®

  • DensGlass Gold®
  • OSB
  • Block Wall
  • Brick

Stucco Wrap

  • OSB
  • DensGlass Gold®

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Keeping your tools clean

EIFS Repair Tip Of The Day for 3-11-2011

Keeping your tools clean.

For an EIFS applicator it can be hard to keep the tools clean. On a really hot day it only takes a matter of minutes for the alpha base coat or finish coat to dry up on the tools. After the material is dry on the tools it is a task to get it off. There is an easy fix to this problem. Simply carry a bottle of WD-40 with you and spray the back side of your hawk and trowel with it. The base coat or finish will dry on the tools but it scraps right off. With a layer of oil between the trowel and the mud it allows the mud to fall right off very easily.

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Apply 100% acrylic polymer finish coat over alpha base coat

EIFS – Exterior Insulation and Finish System installation process

Applying the Finish Coat

The EIFS Finish Coat is applied over the Alpha Base Coat. The finish is troweled on and floated with a plastic float. It is very important to have a smooth surface for the finish to be troweled over, as the finish is only about a 1/16 of an inch thick. There are a few textures to choose from. The main three textures are Fine (which has a small aggregate and looks smooth or fine) , Medium (medium has a slightly larger aggregate and has a pebble look), and Coarse (coarse has even a larger aggregate and has a classic stucco look).  When floating the finish it is very important that all floaters use the same technique (every one uses 9″ circles) to keep the wall looking the same everywhere.

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Embed fiber glass cloth in the Alpha Base Coat

Exterior Insulation and Finish System installation process

The Alpha Base Coat is troweled on to the foam by an approved EIFS applicator and a fiber glass mesh is embedded into the base coat. The base coat is applied 1/8 of an inch thick. The fiber glass cloth comes in 38 inch and 48 inch rolls and is overlapped 2 inches. There can not be any eps foam that is not covered with fiber glass mesh. Including all corners. The base coat should be troweled on smooth and a corner tool used on all corners for a nice sharp look.

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A quick overview of the EIFS installation process

EIFS installation process

An overview of the Exterior Insulation and Finish System or EIFS installation process

Exterior Insulation and Finish System / EIFS  installation process is as follows:

EIFS (Exterior insulation and Finish Systems) also known as synthetic stucco.

That was a quick overview of the EIFS process

Kick out flashing is a very important part of the EIFS install that seems to be over looked by contractors. We have an article explaining kick out flashing including what it is used for and how it should be installed.

Another important aspect of an EIFS installation is a water drainage system which we have covered in depth for you in a separate article as well. The Water Drainage System is very important to get right because if you don’t the substrate of the structure could be damaged if it is not used. We have taken the Water Management System on huge step further with our Water Prevention System.

EIFS installation process

Print an EIFS Quick Reference Guide

EIFS installation processEIFS Repair – Exterior Insulation and Finish System – Synthetic Stucco