Skip to content
ASC Silicone Primer 5 gal
Regular price $144.00Orders start at $399 — combine any items to reach the minimum. Learn more
ASC SP Silicone Primer, Gray, 5 Gallon Pail, Water-Based Acrylic Adhesion Primer
This is ASC SP Silicone Primer, a plasticizer-free, single-component, water-based acrylic primer supplied in a 5 gallon pail. It primes aged asphalt, SPF, metal, wood and concrete to improve adhesion and yield of sprayed polyurethane foam, and its breathable film is watertight while letting trapped moisture escape. Apply by spray, roller or brush.
Key Features:
- Boosts adhesion: Specialized polymers and wetting agents maximize adhesion and overall yield of sprayed polyurethane foam.
- Breathable membrane: Forms a watertight film that breathes, allowing trapped moisture to escape.
- Multi-substrate: Developed to prime aged asphalt, SPF, metal, wood and concrete surfaces.
- Plasticizer free: Single-component, water-based acrylic formula with no plasticizers.
- Low VOC: VOC/VOS content is less than 50 grams per liter.
- Easy cleanup: Tools and spills rinse clean with water.
Specifications Table:
| Specification | Details |
|---|---|
| Brand | ASC |
| Manufacturer model | ASCSP5 |
| Sell unit | 1 pail, 5 gal |
| Product type | Roof primer |
| Chemistry / base | Plasticizer-free, single-component, water-based acrylic |
| Color | Gray |
| Container size | 5 gallon pail |
| Solids content | 40% +/- 2% by volume |
| VOC | <50 grams/liter |
| Coverage rate | 0.5-1 gallon per square (1.9-3.8 L per 9.3 m²) depending on substrate |
| Application method | Spray (preferred), 1/4-1/2 in. nap roller, or synthetic filament brush |
| Dry / cure time | Cures only by water evaporation; drying time varies with wet film thickness, temperature, humidity and air movement |
| Compatible substrates | Aged asphalt, sprayed polyurethane foam (SPF), metal, wood, concrete |
| Weight per gallon | 9.4 lbs +/- 0.2 |
| Shelf life | One year from manufacture date in unopened containers |
| Storage | Not freeze-thaw stable; store between 50°F and 100°F; do not store below 45°F |
| Pack quantity | 1 pail |
| Manufacturer warranty summary | One-year warranty against manufacturing defects (product only; no labor or installation coverage) |
Coverage & How Much You Need:
Apply at 0.5-1 gallon per square depending on substrate, so one 5 gallon pail primes roughly 5 to 10 squares. Coverage varies with substrate porosity and surface condition.
Fit and Compatibility:
ASC SP is designed to prime aged asphalt, SPF, metal, wood and concrete surfaces ahead of sprayed polyurethane foam application. Use only on roofs with adequate slope, and do not apply below 50°F or if rain or dew is expected before the primer dries.
Frequently Asked Questions (FAQ):
Q: What is included in the order?
A: One 5 gallon pail of ASC SP Silicone Primer in Gray.
Q: How much area does one pail cover?
A: At the recommended 0.5-1 gallon per square rate, a 5 gallon pail covers approximately 5 to 10 squares depending on the substrate.
Q: How is it applied?
A: It is intended to be spray-applied, but can also be rolled with a 1/4-1/2 in. nap roller or brushed with a synthetic filament brush.
Q: Which surfaces does it prime?
A: Aged asphalt, sprayed polyurethane foam, metal, wood and concrete.
Q: Can it freeze?
A: No, it is water-based and not freeze-thaw stable; store between 50°F and 100°F and never below 45°F.
Q: How do I clean up?
A: Simply rinse tools and equipment with water.
Expert Verdict — Reviewed by the SuperArbor Pro Desk
Prime porous or chalky substrates before spraying foam to improve adhesion and stretch your foam yield. Apply to a clean, dry surface at the lower end of the rate on dense substrates and the higher end on porous ones. Because it cures only by water evaporation, plan application for warm, dry weather above 50°F with no rain or dew expected before it dries.
Harmful or fatal if swallowed and an eye, skin and respiratory irritant; use adequate ventilation, keep out of reach of children, and read the SDS before use.
Order ASC SP Silicone Primer in the 5 gallon pail to maximize foam adhesion on your next roof.
Product Documents:
All third party trademarks, including logos and icons, referenced on our website and product pages remain the property of their respective owners. Unless specifically identified as such, Arbor's use of third party trademarks does not indicate any relationship, affiliation, sponsorship, or endorsement between Arbor Home and the owners of these trademarks. Any references by Arbor Home to third party trademarks are to identify the corresponding third party goods.
