ClassicBond EPDM Rubber Roofing Primer

ClassicBond EPDM Primer:

• Cleans the membrane surface
• Prepares EPDM for pressure-sensitive products
• Improves tape and flashing adhesion
• Promotes strong seam performance
• Reduces the risk of splice failure

It is designed specifically for use with ClassicBond EPDM systems and pressure-sensitive accessories.

This primer:

• Must not be used to bond membrane to membrane without splice tape
• Is not a deck adhesive
• Should not be thinned

It is used only as part of a correct EPDM seam or flashing detail.

1. Remove dirt and debris from the membrane surface
2. Stir primer thoroughly (minimum 5 minutes recommended)
3. Apply a thin, even coat to the membrane only
4. Avoid puddles or excessive application
5. Allow to dry until it does not transfer to a dry finger touch
6. Install splice tape or flashing immediately after flashing off

Using more primer than required does not improve adhesion - full, even coverage is what matters.

Approximate coverage:

• Up to 47.5 linear metres at 100mm width per 1 litre
• Approx. 3.3 m² per litre

Example (250ml tin):

• ~6.5m of 3″ splice tape (both sides)
• ~6.5m of 6″ cover tape
• ~4.5m of 9″ uncured flashing

Coverage will vary depending on application thickness and membrane condition.

• Base: Synthetic Rubber
• Colour: Olive drab to dark grey
• VOC: 727 g/L
• Flash Point: 4.4°C (Flammable)
• Shelf Life: 9 months (5°C–25°C storage)

⚠️ This product is flammable and should be used with adequate ventilation.