Modified Bitumen Silicone

Control asphalt bleed-through with a primer, then protect the roof with KoolFlex silicone. Modified Bitumen Silicone creates a continuous finish over prepared cap sheets where sunlight and standing water are key concerns.

Use this approach when you need a silicone finish on an asphalt-based membrane. It suits low-slope exposure after the roof has been checked for sound attachment, moisture and repairable defects.

Record scope

This page is the product-level record for Modified Bitumen Silicone. It separates this product from similar lines, variants and generations so that specifications and data sheets can be checked against the correct identity.

• Product family: Modified Bitumen
• Recorded applications: Modified bitumen roof restoration, Silicone coating system
• Market: USA
• Manufacturer: Kool Coats

Key recorded details

These values summarize reviewed manufacturer information. Use the linked source for tolerances, options, exclusions and complete assembly requirements.

• Existing roof: Modified Bitumen
• Coating chemistry: Silicone
• Finish / main coating: KoolFlex Premium Silicone

Matched current documents

The following current files are connected directly to this product record. Older revisions remain in the archive when moderators retire them.

• KF-600 KoolFlex Premium Silicone — Technical Data Sheet
• P-305 Asphalt BleedBlock Primer — Technical Data Sheet
• KF-460 KoolFlex Mastic — Technical Data Sheet

Design and specification coordination

Use these checks to connect the product record to a complete, project-specific assembly. The manufacturer documents and approved construction documents govern where they provide more specific requirements.

• Identify the existing substrate and verify adhesion, primer and repair requirements before coating.
• Confirm required coverage rate, wet and dry film thickness, number of coats and reinforcement at seams and penetrations.
• Record surface preparation, moisture limits, application temperature, weather window and cure time.
• Coordinate drainage, ponding-water limitations and treatment of rust, blisters, wet insulation and failed details.
• Use the current product data and safety data sheets together when planning storage, handling and application.

Submittal and field verification

A useful product record should allow a reviewer to trace what was specified, approved, delivered and installed. Include the following items when this product is proposed or verified.

• Use the exact product name and manufacturer identifier on the submittal; do not substitute a similar family name.
• Attach the current product data sheet and the applicable installation, safety, approval and warranty documents.
• Record selected options such as size, thickness, profile, color, finish, reinforcement and attachment method.
• Identify the tested or approved assembly and list each adjoining component needed to reproduce it.
• At delivery, compare labels and revision dates with the approved record and archive superseded files instead of overwriting them.

Selection, installation and existing-roof checks

Confirm the exact product name, generation and configuration before using any value on this page. Check the roof substrate, slope, attachment or adhesive, reinforcement, edge and penetration details, accessories, tested assembly and local approval that apply to the project. For an existing roof, compare labels, package records, original submittals and physical dimensions; appearance alone is not enough to identify a product.

Recorded applications

• Modified bitumen roof restoration
• Silicone coating system

Record scope

• Product family: Modified Bitumen
• Recorded market: USA
• Product code: Silicone coating system

Related services and guidance

• Flat Roofing Systems Texas

• Existing roof: Modified Bitumen (USA)
• Coating chemistry: Silicone (USA)
• Finish / main coating: KoolFlex Premium Silicone (USA)

Your roof substrate

Your modified-bitumen roof has asphalt-based membrane sheets joined at laps, with either a smooth finish or protective mineral granules. Heat, sunlight and repeated movement can leave cracks, worn cap sheets and stressed transitions. A restoration coating follows repair of those defects; it cannot dry wet insulation or secure a loose membrane.

Market: USA

Verify this information with the manufacturer source

Where to use this system

Use this approach when you need a silicone finish on an asphalt-based membrane. It suits low-slope exposure after the roof has been checked for sound attachment, moisture and repairable defects.

Market: USA

Verify this information with the manufacturer source

Preparation and adhesion

Remove dirt and loose material, repair open laps and splits, and check the cap sheet is firmly bonded. Investigate trapped moisture and persistent drainage problems before coating. For silicone, apply the specified asphalt bleed-block primer so oils from the roof do not discolor the finish.

Market: USA

Verify this information with the manufacturer source

How the coating layers work

Apply the specified P-305 Asphalt BleedBlock Primer over the prepared asphalt surface. Treat details with compatible materials, then install KoolFlex Premium Silicone. On granulated cap sheets, the primer also helps fill surface valleys before the finish coat.

Market: USA

Verify this information with the manufacturer source

Coating thickness

Specify the minimum cured silicone thickness for your chosen assembly and allow separately for primer and detail treatment. The KF-600 sheet has conflicting coverage and wet-film figures. Its 20-mil NSF entry is not a roof-warranty thickness schedule; use the corrected roof-system application schedule.

Market: USA

Verify this information with the manufacturer source

Guarantee options

KF-600 KoolFlex Premium Silicone offers full-system limited warranty options from 5 to 20 years. Select the written option for your roof, then confirm the required coating build, preparation, inspections and maintenance. A component sheet alone does not establish your project’s coverage.

Market: USA

Verify this information with the manufacturer source

Care and recoating

Inspect the roof at least twice a year and after severe weather or work on rooftop equipment. Keep drains clear, check flashings and penetrations, and repair damage with compatible materials. Confirm the surface preparation and compatibility requirements before any future recoat.

Market: USA

Verify this information with the manufacturer source

Your modified-bitumen roof has asphalt-based membrane sheets joined at laps, with either a smooth finish or protective mineral granules. Heat, sunlight and repeated movement can leave cracks, worn cap sheets and stressed transitions. A restoration coating follows repair of those defects; it cannot dry wet insulation or secure a loose membrane.

Compatibility considerations

Remove dirt and loose material, repair open laps and splits, and check the cap sheet is firmly bonded. Investigate trapped moisture and persistent drainage problems before coating. For silicone, apply the specified asphalt bleed-block primer so oils from the roof do not discolor the finish.

• Modified Bitumen Silicone coating system
• KF-600 KoolFlex Premium Silicone — Technical Data Sheet
• KF-460 KoolFlex Mastic — Technical Data Sheet
• P-305 Asphalt BleedBlock Primer — Technical Data Sheet