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Versi-Foam

VFS1 Versi-Foam Kit (Small)

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SKU:
VFS1
MPN:
VFS1
Condition:
New
Availability:
Usually Ships within 24 Hours
Weight:
3.00 LBS
Width:
10.00 (in)
Height:
4.00 (in)
Depth:
6.50 (in)
  • CRITICAL UNIT OF MEASURE FOR TUB SUPPORT COMPRESSIVE STRENGTH (PSI)
  • VFS1 Versi-Foam Kit (Small)
  • VFS1 Versi-Foam Kit (Small)
Frequently bought together:

Description

VersiFoam Logo
⚠️ CRITICAL UNIT OF MEASURE FOR TUB SUPPORT
COMPRESSIVE STRENGTH (PSI)
PSI — not density — is what holds up a fiberglass tub.
When a tub fills with water and a person steps in, the foam is being crushed. The only thing that matters is how many pounds per square inch the foam can resist without collapsing.
VersiFoam: 19.8 PSI    |    Single-Part Foams: ~9 PSI
That means VersiFoam is more than 2× stronger at resisting tub movement, flexing, and void formation. Density only tells you how much foam you sprayed — PSI tells you if it will survive the load.
FOAM UNDER FIBERGLASS TUBS: THE “PRO” WAY vs THE “CALLBACK” WAY
Buffalo Hump • Hidden Voids • Cracked Repairs
Many refinishers inject foam under fiberglass tubs for reinforcement. The problem isn’t “foam” — it’s using the wrong type of foam and creating voids that turn into failures.
The “Mushroom” Problem (and why pros wait)
With single-part foam, refinishers often drill relief holes on the tub bottom, inject foam, and watch it expand up through the holes — little “mushrooms.”

Here’s the trap: if you cut too soon and start filling/feathering repairs (fiberglass resin, Bondo/polyester filler, glazing putty), you can push down on the foam while it’s still moving. That creates a tiny gap between the foam and tub bottom — a void you manufactured while doing “good work.”
PRO RULE:
If you insist on single-part foam, wait until the next day before trimming and repairing. If you don’t, you risk hidden voids, flexing, cracked repairs, water intrusion, and callbacks.
WHY “BUFFALO HUMP” HAPPENS:
Without enough relief holes, foam expansion can push upward instead of flowing into voids. That can lift the tub bottom and create a visible rise — a mistake customers notice fast.
Why Voids Fail: Real Weight on a Tub
A “standard” tub often holds roughly 40–50 gallons in real use.
Water weight
40 gal × 8.34 lb/gal = 333.6 lb
50 gal × 8.34 lb/gal = 417.0 lb
Add a 200 lb person
40 gal scenario: 333.6 + 200 = 533.6 lb
50 gal scenario: 417.0 + 200 = 617.0 lb
Now add movement
Stepping, shifting weight, and flexing turns tiny voids into crack starters. That’s how “small shortcuts” become big callbacks.
A true professional avoids hidden weaknesses — because once the customer sees failure, your skill and knowledge get judged… and referrals vanish.
The Fix: Use a Professional Two-Part Foam Kit (VersiFoam)
Fast • Dense • Stronger Support
Two-part kits are designed as a closed-cell, in-place structural foam — not “air sealing foam in a can.” With VersiFoam you get higher in-place density, stronger compressive ratings, and an extremely fast set so you’re not fighting foam movement while doing your repair work.
THE PROFESSIONAL ARGUMENT:
If you can’t afford a two-part kit, you definitely can’t afford the callbacks and reputation damage caused by single-part foam shortcuts.
Quick Comparison (Density • Strength • Dry/Cure Reality)
Foam Type Use Class Density Compressive Strength (psi) Tack-Free / Handling Full Cure
VersiFoam (2-Part Kit) Professional in-place foam system Free Rise: 1.75 lb/ft³
In Place: 2.00 lb/ft³		 19.8 psi (parallel) 30–40 sec tack-free
30–40 sec rise time		 Fast set (designed for in-place application)
Great Stuff Pro™ Gaps & Cracks (1-Part) Air sealing / gaps 1.01 pcf (≈ 1.01 lb/ft³) 9.3 psi (parallel) 3–10 min tack-free
~1 hour trimmable		 Cure varies by bead size & humidity
Loctite® TITE FOAM® Gaps & Cracks (1-Part) Air sealing / gaps (Varies by product / not always shown) (Not typically stated on consumer TDS) 6–8 min tack-free
45–55 min cut time		 ~24 hours
Professional note: One-part foams are primarily designed for air sealing and gap filling. Tub support is a structural problem — so treat it like one.
Professional Checklist (No Callbacks)
  • Relief holes matter: without pressure relief you risk “buffalo hump” lift and incomplete fill.
  • Don’t rush trims/repairs: cutting or pushing on foam early can create hidden voids.
  • Think like an engineer: hundreds of pounds + movement = flex cycles that crack weak repairs.
  • Use the right tool: structural support calls for a professional 2-part closed-cell in-place kit.
TRUE PROS DON’T GAMBLE WITH HIDDEN VOIDS.
SharkGrip Coatings helps you understand the difference — so your work stays perfect.
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2 Reviews

  • 5

    100% Recommended!!

    Posted by Oscar on Aug 21st 2024

    Verdi-Foam is the best foam that I ever have used. It made the job so easy. Definitely, I will continue using it. Thanks E.A.H. Industrial for great products.

  • 5

    Versi foam

    Posted by Adam Werner on Apr 5th 2024

    Great! Easy to use. Provides excellent support for voids under tubs and showers

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