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ALDOSEAL 399

ALDOSEAL 399 is a high solid, low VOC, one-part silicone elastomeric flashing grade specifically designed for use in sealing roof penetrations, curbs, seams, flashing areas and any other roof top areas of possible water infiltration. It is also the sealant of choice for any roof system that has been previously coated with a silicone elastomeric coating. Once applied, this silicone flashing grade provides a durable, seamless and flexible system that resists lateral movement, shear and will allow for normal expansion and contraction. ALDOSEAL 399 provides greater waterproofing protection than similar flashing grade silicone sealants and offers increased resistance to moisture penetration.

Product families

Ready-to-Use Products — Adhesives & Sealants
  • Caulks & Sealants

Other characteristics

Brand
ALDOSEAL
Product Type

1K (1 component) Coating, 1K (1 component) Sealant; 1K (1 component) Coating; 1K (1 component) Sealant

Application Area
Roofing Membranes
Application Method
Brush, Roller, Spray
Usage

ALDOSEAL 399 was specifically developed as a protective sealant for pipe boots, seams, flashing areas, curbs, exposed fasteners and all other breaches in a roof system that will allow water to enter a structure.. With excellent adhesion to other silicone products, ALDOSEAL 399 is proven to provide long term durability versus water based sealants.

Markets
Building & Construction
Shelf LIfe
12 Months (50°F - 85°F)
Technology
Ready-to-Use Products
Clean Up Solvent
Aldo Thinner II
Application Methods
  • Brush
  • Roller
  • Spray
Handling

Avoid contamination in sealed containers.; Store away from heat and sources of ignition.; Do not inhale vapor or mist; do not get on skin, in eyes or on clothing.

Ready to Use Product Features
  • Durable
  • Excellent Substrate Adhesion
  • Flexible
  • High Solids Content
  • Low VOC

Technical data

Table 1 of 1

12 rows
CharacteristicValueMethod
Total Solids (Volume)92 - 98%
Weight10.7lbs/gal
Flash Pointmin. 200°F
Viscosity150000.0cPs
Elongation (Initial)275.0%
Hardness45 - 55Shore A
Tensile Strength130.0psi
Permeability4.2perms
Service Temperature-25 to 175º F
Cure Time12.0 - 18.0Hours
Tack Free1.0 - 2.0Hours
VOCmax. 50g/l

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