| Substrate
Type |
Clean |
Prime |
1. MH Poly ISO
2
(felt facer only, no foil faced |
Sweep |
No |
2. High
Density Wood Fiberboard - coated six-sides (only) |
Sweep |
No |
3. Concrete (min.
30-day cure) |
Wash |
MH #121 Asphalt Primer |
4. Metal
(Deck)
Edge Metal |
Wash |
MH #121 Asphalt
Primer
Fast drying spray primer
(aerosol can) meeting ASTM D 41 |
5. New Plywood
Decking |
Sweep |
No |
6. New
O.S.B. – (must have rough surface face up)
Do not adhere to smooth waxed surface. |
Sweep |
No |
7. Aged Wood Surfaces |
Sweep |
MH #121 Asphalt Primer |
8. Dens-Deck® Prime |
Sweep |
MH #121 Asphalt Primer |
