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genotek / drywall / genfoam
genfoam series

genfoam
genfoam series

sku: genfoam · wall
best for: basements, below-grade structures, car parks, tunnels.

Introducing the GENFOAM

The GENOTEK GENFOAM Series is a high-performance, lightweight compression foam system engineered from closed-cell ethylene vinyl acetate (EVA) copolymer to provide a durable, watertight primary or secondary seal for expansion joints. Designed for both horizontal and vertical applications, this UV-stable and chemical-resistant joint sealant is ideal for extreme conditions in bridges, parking garages, stadiums, and plaza decks. Featuring a non-invasive installation process that requires no drilling, the GENFOAM system ensures a dustproof, airtight, and thermally insulating barrier that effectively accommodates dynamic joint movement while maintaining structural integrity.
Watertight Seal Watertight Seal
Low Maintenance Low Maintenance
Corrosion Resistant Corrosion Resistant
Indoor / Outdoor Usability Indoor / Outdoor Usability
movement
01 — movement

seismic movement accommodation

designed to accommodate dynamic joint movement by compressing and expanding as needed while maintaining its structural integrity.

water barrier
02 — water barrier

water protection

the genfoam series is engineered to provide a reliable, monolithic barrier that is completely impermeable to water. this seamless, closed-cell structure creates a durable primary seal that is simultaneously watertight, airtight, and dustproof. by conforming to strict standards, the system maintains its integrity under extreme conditions while ensuring a maximum water absorption rate of only 1% over seven days.

load bearing
03 — load bearing

load bearing

the genfoam is specifically recommended for high-traffic areas such as bridge expansion joints, parking garage joints, and highway longitudinal or transverse joints. to enhance its performance under load, a tooled radiused edge on the adjacent concrete corners is recommended, which reduces the effects of impact loading from vehicles and prevents edge erosion or spalling.

assembly
04 — assembly

assembly in action

this video demonstrates the assembly process, perfectly designed for easy installation for durability and reliability.

Non-Invasive Installation

Designed for high-efficiency installation without the need for drilling or mechanical anchoring, which preserves the integrity of the surrounding substrate. This non-invasive system utilizes a high-strength, structural epoxy adhesive to bond the lightweight, preformed foam directly to the cleaned interface walls of the joint. By eliminating the need for invasive fasteners, the system allows for a faster, easier installation process that is particularly beneficial for preserving concrete in stadiums, bridges, and parking structures.
Non-Invasive Installation

Lightweight Material

Made of preformed closed-cell ethylene vinyl acetate (EVA) copolymer foam, making it easy to handle during the installation process.
Lightweight Material

System Drawing

Technical system drawing.
System Drawing
interactive tool

gap size calculator

enter your expansion gap measurement to see if this product is right for you.

💳
20mm ≈ credit card
✌️
50mm ≈ two fingers
100mm ≈ fist width
🖐️
200mm ≈ hand span
mm
genfoam covers gap sizes from 30mm to 280mm. enter your measurement above to see the movement capacity, profile width, and whether this product handles your requirements.

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technical data

profile specifications

model name joint width (mm) height (mm) sightline (mm) movement capability (%)
genfoam-100 100 80 120 ±50
genfoam-140 140 80 170 ±50
genfoam-180 180 80 220 ±50
genfoam-225 225 80 270 ±50
genfoam-50 50 80 60 ±50
alternatives

similar products to consider

genfoam-a standard
genfoam-a
genfoam-a series
wall-to-floor transitions, column joints, and angular connections.
gap range
48 – 280mm
movement
±50%
view →
genfoam-s standard
genfoam-s
genfoam-s series
joints requiring sealant overlay, high-traffic areas needing enhanced bonding.
gap range
25 – 200mm
movement
±50%
view →
gna economy
gna
ecoseal series
budget-conscious projects, residential, and light commercial applications.
gap range
10 – 60mm
movement
±25%
view →
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Documents & Resources

GENFOAM Technical Datasheet
PDF
GENFOAM Installation Instruction
PDF
GENFOAM-100
PDF
GENFOAM-140
PDF
GENFOAM-180
PDF
GENFOAM-225
PDF
GENFOAM-50
PDF
GENFOAM-100
DWG
GENFOAM-140
DWG
GENFOAM-180
DWG
GENFOAM-225
DWG
GENFOAM-50
DWG
GENFOAM-75
DWG
GENFOAM Material Safety Datasheet
PDF
SPEC.GENFOAM.R0
DOCX
Specs.L.GENFOAM.Short
XLSX
MAXMIN.L.GENFOAM.100-DWG
PDF
MAXMIN.L.GENFOAM.140-DWG
PDF
MAXMIN.L.GENFOAM.180-DWG
PDF
MAXMIN.L.GENFOAM.225-DWG
PDF
MAXMIN.L.GENFOAM.50-DWG
PDF

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