GAF TOPCOAT Surface Seal SB Primer – White, 55-Gallon Drum
SKU: 17877575433

GAF TOPCOAT Surface Seal SB Primer – White, 55-Gallon Drum

Sale price$164.84 Regular price$183.15
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Description

GAF TOPCOAT Surface Seal SB Primer – White, 55-Gallon DrumTOPCOAT Surface Seal SB Primer, White (55 gal) Solvent based, sprayable thermoplastic rubber primer that cures into a seamless, reflective membrane. Designed to protect and flex with roof movement, ideal for modified bitumen and compatible roofing systems. Key Features: Seamless Protection: Cures to a continuous thermoplastic rubber membrane for durable roof sealing High Reflectivity: Helps reduce surface temperatures and protect roof substrates

TOPCOAT Surface Seal SB Primer, White (55 gal)

Solvent-based, sprayable thermoplastic rubber primer that cures into a seamless, reflective membrane. Designed to protect and flex with roof movement, ideal for modified bitumen and compatible roofing systems.


Key Features:

  • Seamless Protection: Cures to a continuous thermoplastic rubber membrane for durable roof sealing
  • High Reflectivity: Helps reduce surface temperatures and protect roof substrates
  • Flexible Formula: Accommodates temperature-driven expansion and contraction
  • Pro-Ready Application: Sprayable solvent-based primer for efficient coverage
  • Tested & Approved: Meets ASTM standards; CRRC, Energy Star, Miami-Dade, Florida Building Code, UL, and FM approvals

Specifications Table:

Specification Details
Color White
Packaging 55 Gallon Drum
Coverage Area 100 Sq. Ft. (9.3 Sq. m)
Technology Solvent-based sprayable thermoplastic rubber primer/sealant
Membrane Cures to a seamless rubber membrane
Approvals/Certifications CRRC Approved; LEED; Energy Star; Miami-Dade County Approved; Florida Building Code Approved; UL Classified; FM Approved
Standards ASTM D412; ASTM B117; ASTM C794; ASTM G21; FTMS 141.6271; ASTM D2196; ASTM D1475; ASTM E1644
Style/Category Adhesives, Caulks & Sealants
Manufacturer Number 89SD920WP
Product Number GAFTCSSSBWHG55

Frequently Asked Questions (FAQ):

Q: What surfaces is this primer intended for?
A: It’s formulated for roofing applications and commonly used as a primer on modified bitumen and compatible substrates per GAF guidance.


Q: How is it applied?
A: It is a sprayable, solvent-based product; follow the product data sheet for equipment, coverage rates, and application conditions.


Q: What is the color and packaging?
A: White color, packaged in a 55-gallon drum.


Q: What approvals and standards does it meet?
A: It aligns with ASTM D412, B117, C794, G21, D2196, D1475, E1644 and holds CRRC, LEED, Energy Star, Miami-Dade, Florida Building Code, UL Classified, and FM Approved statuses.


Q: What coverage can I expect?
A: Listed coverage area is 100 sq. ft. (9.3 sq. m). Actual coverage varies by substrate and application method.


A Gleaming, Seamless Shield for Modern Roofscapes

This primer sets the stage for a roof that reads crisp and refined, casting a clean white sheen that elevates the skyline. I love its thermoplastic rubber chemistry—supple yet resilient—creating a continuous skin that moves elegantly with the building. Pair it with cool, minimal metal details and charcoal coping for a chic, high-contrast finish. It’s the quiet luxury essential that protects while polishing the entire silhouette.


Elevate and protect your roof with TOPCOAT Surface Seal SB—order the 55-gallon drum today for seamless, high-performance coverage.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 17877575433

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Jason Dusterwald
Lexington, US
★★★★★ 4
Fine Simple Product, Works as Advertised
Size: 3-Panel
Performs as advertised, a simple upright divider. I use it to mark my "office" space when working from home. Assembly was straightforward and well documented. One person can do it, but a second person can be helpful when sliding the fabric divider pieces onto their poles. Part quality is fine for the price point. The only mild annoyance is that the upright poles can start getting loose from the metal feet, and need to be retightened occasionally (Allen wrench is included, keep it handy for retightening). It's fairly lightweight and easy to reposition, but the feet are heavy enough to keep it steady once placed. All in all, a good product. I was pleased enough to buy a second one when my son wanted something to block sunlight from behind his computer desk.
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Reviewed in the United States on August 18, 2025
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Sheila Cash
Lexington, US
★★★★★ 1
Wobbly and Poor Design
Size: 1-Panel
Update: nope! Not worth the money. My cat simply brushed against the divider, and it fell, knocking breakable things over. Not safe! It serves it's purpose, but...the screws were basically glued to the packaging. It took me longer to get the screws out of the packaging than it did to put it together. The assembly was easy. I am not mechanically inclined by any means, but the instructions, despite being very hard to read (I have over 40 eyes), were pretty simple. Structurally, it is very wobbly. I think they should have designed it with a middle rod to keep it more stable. I find that the attachments to the rods are wobbly and should have been screwed rather than popped into an attachment hole without reinforcement. That would have also made the room divider more stable. I have cats, but the material is easy to clean. I took a damp cloth to it, and it came right off. As far as see-through...I think it does a great job of masking theO other side of the room.. I just wish it was a little longer and closer to the floor stand. I like that it came with extra parts. It's just a very cheaply made item, and I don't think the price for the item reflects how cheaply it is made, how wobbly and unstable it is, or the poor design.
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Reviewed in the United States on March 15, 2025
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David T Stark
Omaha, US
★★★★★ 5
Very good room divider
Size: 6-Panel
I ised this to isolate a storage area in my apartment. Looks better than boxes.
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Reviewed in the United States on January 22, 2026
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Jodie
Pawtucket, US
★★★★★ 3
Taking forever but worth it
Size: 1-Panel, Size: 1-Panel
Love the product. However, trying to take the screws etc out of its box, it’s almost impossible due to the adhesive inside it. I have neck and arm issues so for me it was even more difficult. Adhesive stuck to each washer and screw so I had adhesive all over my hands then I had to get it off of the items.
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Reviewed in the United States on April 21, 2025
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Lyssetic
Alexandria, US
★★★★★ 5
Favorite Socks Ever
Size: Medium, Color: Black/Assorted, Size: Medium, Color: Black/Assorted
I absolutely love these socks, they compress in the middle which is my favorite thing about them! Keeps them from slipping off my feet and also adds support, love love love how they feel and how long they last! This is my second pack that I’ve purchased, I had the multi colored ones before and they’ve lasted me two years before finally starting to wear out and fade and get holes. Definitely going to be routinely buying these every year. Good to wear with my work out shoes...winter boots, Nike sandals, and my everyday adidas sneakers. These are so worth it!
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Reviewed in the United States on May 28, 2019

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