Datasheet

SurfaceDOW CORNING®
798 Cold & Clean
Room Silicone
DOW CORNING®
797 Weatherproofing
Silicone
DOW CORNING®
796 PVC-U, Wood &
Aluminium Silicone
DOW CORNING®
794 Plastics & Glass
Silicone
DOW CORNING®
787 Glass & Metal
Masonry
Concrete mortars¹P*Test/P*P*P*Not recommended
Brick¹No primer requiredNo primer requiredNo primer requiredNo primer requiredNot recommended
Granite¹Test/1200*No primer requiredTest/1200*Test/1200*Not recommended
G.R.C¹Test/Barrier*Barrier*Barrier*Barrier*Not recommended
Marble¹Test/Barrier*Test/Barrier*Test/Barrier*Test/Barrier*Not recommended
Limestone¹Test/Barrier*Test/Barrier*Test/Barrier*Test/Barrier*Not recommended
Sandstone¹Test/Barrier*Test/Barrier*Test/Barrier*Test/Barrier*Not recommended
Metals
Aluminium - mill finishedNo primer requiredNo primer requiredNo primer requiredTest/1200*Test/1200*
Aluminium - anodisedNo primer requiredNo primer requiredNo primer requiredNo primer requiredTest/1200*
LeadTest/1200*Test/1200*Test/1200*Test/1200*Not recommended
Mild steelTest/1200*No primer requiredTest/1200*Test/1200*Not recommended
Stainless steelTest/1200*No primer requiredTest/1200*Test/1200*Test/1200*
Galvanised steelTest/1200*Test/1200*Test/1200*Test/1200*Not recommended
CopperTest/1200*No primer requiredNo primer requiredTest/1200*Not recommended
Plastics
PVC-U³No primer requiredTest/1200*No primer requiredNo primer requiredTest/1205*
Plasticised PVC³Test/1205*Test/1205*Test/1205*Test/1200*Test/1205*
Molded nylon³Test/1200*Test/1200*Test/1200*Test/1200*Not recommended
Acrylic³Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
Polyester³Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
P.V.F2³Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
Polycarbonate³Test/1200*Test/1200*No primer requiredNo primer requiredNot recommended
Coatings/paints
Acrylic³No primer requiredNo primer requiredNo primer requiredNo primer requiredTest/1200*
Alkyd³No primer requiredNo primer requiredNo primer requiredNo primer requiredTest/1200*
Silicone³No primer requiredNo primer requiredNo primer requiredNo primer requiredTest/1200*
Polyurethane³No primer requiredNo primer requiredNo primer requiredNo primer requiredTest/1200*
P.V.F2¹ ³Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
Polyester powder¹ ³Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
Rubber & Sealants
E.P.M.D. butyl neoprene²Test/1205*Test/1205*Test/1205*Test/1205*Test/1205*
Polyurethane²
Polysulfide²
Acrylic²
Test/1205*Test/1205*Test/1205*Test/1205*Test/1205*
Silicone¤No primer requiredNo primer requiredNo primer requiredNo primer requiredNo primer required
Glazed surfaces
GlassNo primer requiredNo primer requiredNo primer requiredNo primer requiredNo primer required
Laminated/reflective glassFor advice, contact
Dow Corning
For advice, contact
Dow Corning
For advice, contact
Dow Corning
For advice, contact
Dow Corning
For advice, contact
Dow Corning
Glazed ceramic tilesNo primer requiredNo primer requiredNo primer requiredNo primer requiredNo primer required
PorcelainNo primer requiredNo primer requiredNo primer requiredNo primer requiredNo primer required
Vitreous enamelTest/1200*Test/1200*No primer requiredTest/1200*No primer required
Wood/wood finishes
Oak,pineTest/1200*Test/1200*Test/1200*Test/1200*Test/1200*
TeakBarrier*Barrier*Barrier*Barrier*Barrier*
Stained timber/micro-porous
finish
Test/1200*Test/1200*Test/1200*Test/1200*Test/1200*
¹ Natural variability in surface finishes and color can affect adhesion to these substrates. For further technical assistance, please contact your local
Dow Corning Regional Service Center.
² Compatibility testing of these elastomers may be required before application of Dow Corning Brand sealants.
³ Before use of a solvent on plastics or coatings, it should be ensured that the solvent is compatible and will not damage the substrate.
¤ In situations where acid curing silicones are placed adjacent to neutral curing silicones, adhesion of the neutral silicone may be impaired. Please contact
your local Dow Corning Regional Service Center for technical assistance.
Ref. no. 62-0965A-01
5 / DOW CORNING Construction Primer Guide