Johns Manville TopGard 4000 White Acrylic Elastomeric Roof Coating, 5 Gallon Pail

This is a 5 gallon pail of Johns Manville TopGard 4000, a one-part 100% acrylic elastomeric roof coating in white used as a reflective top coat over smooth or mineral-surfaced asphalt systems, single-ply and metal roofing. White offers an initial solar reflectance of 0.83 and SRI of 104. Apply by spray, brush or medium-nap roller with TopGard Base Coat where required.

Key Features:

• Cool white reflectance: White offers 0.83 initial solar reflectance, 0.88 thermal emittance and SRI 104 initial.
• 100% acrylic: One-part acrylic elastomeric coating with asphalt bleed blocking.
• Title 24 compliant: Can be used to comply with 2019 Title 24 Part 6 cool roof requirements; UL Classified and Energy Star listed.
• Flexible and tough: 260% initial elongation, 270 psi tensile strength and zero fungi resistance rating.
• Broad compatibility: Use over smooth or mineral-surfaced asphalt, single-ply and metal roofing; component in BUR, APP, SBS, TPO, PVC and EPDM systems.
• Weather resistant: No cracking or checking after 1,000 hour accelerated weathering per ASTM D 6083 testing.
• Energy savings: Reflective top coat helps reduce life cycle costs and prolong roof life.

Specifications Table:

Coverage & How Much You Need:

A 5 gallon pail yields roughly 325-500 sq ft per coat on smooth-surfaced substrates (65-100 sq ft/gal) or 250-375 sq ft on mineral-surfaced substrates (50-75 sq ft/gal), applied in two coats at 20 wet mils each. Rates are approximate and vary with substrate and conditions.

Fit and Compatibility:

Use as a top coat over metal roofs directly, or over asphalt, modified bitumen and single-ply systems with TopGard Base Coat applied first at 20 wet mils. It is compatible with JM BUR, APP, SBS, TPO, PVC and EPDM systems per the data sheet; TopGard Base Coat is sold separately.

Frequently Asked Questions (FAQ):

Q: How much area does a 5 gallon pail cover?
A: Approximately 325-500 sq ft per coat on smooth surfaces or 250-375 sq ft on mineral surfaces; apply two coats at 20 wet mils each.

Q: Do I need a base coat?
A: Over metal, TopGard 4000 can serve as both base and top coat; over asphalt, modified bitumen and single-ply, TopGard Base Coat must be applied first.

Q: What temperatures apply?
A: Apply when temperature is 50°F (10°C) and rising, and do not apply within 24 hours of anticipated rain, dew or freezing temperatures.

Q: What are the reflectance values?
A: White has 0.83 initial solar reflectance, 0.88 thermal emittance and SRI 104 initial per the data sheet.

Q: How is it applied?
A: By spray, brush or medium-nap roller, with each coat allowed to dry 4 to 12 hours before the next.

Q: What approvals does it have?
A: UL Classified, Energy Star and Title 24 Compliant, and can be used to comply with 2019 Title 24 Part 6 cool roof requirements.

Expert Verdict — Reviewed by the SuperArbor Pro Desk

Apply TopGard 4000 in two coats at 20 wet mils each, letting the first dry 4 to 12 hours; on asphalt and single-ply systems, use TopGard Base Coat first to block bleed and ensure adhesion. Cooler temperatures and high humidity slow curing, so schedule work for dry weather at 50°F and rising. If FM Global or UL approval is required on the project, confirm the specific application rate through RoofNav or the UL Certifications Directory.

Avoid prolonged skin contact and eye contact, do not take internally, keep containers closed and consult the Safety Data Sheet and product label before use.

Order Johns Manville TopGard 4000 White roof coating in a 5 gallon pail to restore and cool your roof.