Improved Product – StoGuard® AirSeal

October 3, 2017

Sto Corp. is very pleased to announce a new feature of StoGuard AirSeal. StoGuard AirSeal can
now be used under EIFS (StoTherm®
ci) in addition to other claddings such as metal panels, stone
and brick veneer with a cavity, stucco or adhered masonry veneer over metal lath, and wood, vinyl or
fiber cement sidings.

This new feature makes Sto the only EIFS manufacturer to offer a high build fluid-applied air and
water resistive membrane that can be sprayed or roller applied.
StoGuard AirSeal offers various features and benefits including:

  • Vapor permeable (>12 perms)
  • Opaque: complete hide of substrate
  • High build application:
    • 20 wet mils – 12 dry mils for StoTherm ci
    • 50 wet mils – 30 dry mils for other claddings
    • 66 wet mils – 40 dry mils where specified
  • Easy application by roller or spray
  • Extended UV exposure to 180 days (90 days for StoTherm®
  • In-service temperature range: -40°F to 180°F (-40°C to 82°C)

Product Information

Item Number: 81210 – 510

Product Name: Sto AirSeal

Packaging: 5 gallon yellow pail


  • 90-110 ft² per pail at 66 wet mils (40 mils DFT)
  • 130-150 ft2
    per pail at 50 wet mils (30 mils DFT)
  • 320-380 ft2
    per pail at 20 wet mils (12 mils DFT)

Pricing: unchanged

Lead time: Atlanta -3 days

The product is available via eOrder. Material will ship from Atlanta.

Product Marketing Tools

  1. Hot Sheet
  2. Product Bulletin
  3. Application video
  4. SDS
  5. Press release
  6. Social media update
  7. Website update

The product bulletin, Safety Data Sheet (SDS) and video are available online at

Please contact your Sto Account Operations Specialist or Sto Sales Representative if you have any