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Primer 1218 – Maxisil

TILE PRO RATING: GoodBetterBest

Used with Maxisil Pool

$72.00$220.00

Item No.: RDX2017B

attribute_pa_size: 8-4fl-oz-250ml

Item No.: RDX2017C

attribute_pa_size: 34fl-oz-1lt

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Primer 1218 Maxisil is a professional‑grade undercoat designed to promote maximum adhesion of Maxisil silicone sealants on porous, powdery, or difficult substrates. By pretreating stone, concrete, masonry, and grout joints, this fast‑drying primer ensures a long‑lasting, watertight seal that resists weathering, movement, and chemical exposure.

Key Benefits

  • Enhances bond strength between Maxisil silicone sealants and absorbent surfaces
  • Fast flash‑off time—ready for sealing in just 10‑15 minutes
  • Reduces edge staining on marble, granite, and limestone installations
  • Ideal for swimming pools, showers, façades, and exterior expansion joints
  • Available in convenient 250 ml and 1 L bottles

Typical Applications

Substrate Common Projects
Natural & engineered stone Countertops, backsplashes, façades
Ceramic & porcelain tile Showers, pools, spas
Concrete & masonry Expansion joints, precast panels

How to Apply Primer 1218

  1. Clean and dry the joint; remove dust, oil, and release agents.
  2. Shake Primer 1218 thoroughly.
  3. Brush or wipe on a thin, even coat. Avoid pooling.
  4. Allow to flash off for 10–15 minutes until the surface feels dry.
  5. Immediately apply the compatible Maxisil silicone sealant.

Helpful Resources

Read the full Primer 1218 technical information or contact our technical team for project‑specific advice.

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Primer 1218 Maxisil Safety & Storage

Primer 1218 Maxisil is a solvent‑based primer; always provide adequate ventilation, wear appropriate PPE, and keep away from ignition sources. Store unopened containers in a cool, dry location between 41 °F and 77 °F. When stored correctly the shelf life is 12 months from production date.

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