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ecoseal series

gna
ecoseal series

sku: gna · wall
best for: exterior areas with heavy pedestrian and light vehicular traffic, weather-critical joints, and joints with bends or gradients.

Introducing the GN A

Introducing the GN A Series, a versatile and cost-effective membrane sealing expansion joint system designed for a wide range of applications. This wingless, extruded seal is suitable for joint widths from 25mm to 75mm, making it an ideal solution for projects where concrete has already been cast without cutouts or filler formwork. The GN A Series offers excellent waterproofing and air-tightness, combined with ease of installation and adaptability to various site conditions. Available in both EPDM and TPV materials, the GN A Series provides unique advantages for different project requirements.
ECOSEAL GNA expansion joint cover
Economy Solution Economy Solution
Watertight Seal Watertight Seal
Horizontal and Vertical Use Horizontal and Vertical Use
Suits Bends and Gradients Suits Bends and Gradients
movement
01 — movement

movement absorption

the ecoseal gna closed-cell design gives the joint a +/-50% movement capability, accommodating thermal and settlement movement between the slabs while staying bonded and watertight.

water barrier
02 — water barrier

water protection

the continuous membrane nature of the gn-a series, combined with its innovative installation method, provides superior waterproofing. by eliminating anchor bolt penetrations, the system prevents water ingress at the finished floor level and protects the reinforcement layer of the slab from potential water damage

load bearing
03 — load bearing

load bearing

engineered to withstand pedestrian and light vehicular traffic, this system is well-suited to areas experiencing continuous use, reducing maintenance needs while maintaining integrity

assembly
04 — assembly

installation in action

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

Versatile Joint Width Accommodation

The GNA is drawn in three sizes for 25, 50 and 75 mm joint widths (GN-TYPE 1A, 3A and 7A), covering small to medium expansion joints in floor, wall and ceiling conditions.
Versatile Joint Width Accommodation

Surface-Level Installation

the GN A Series can be installed directly on the concrete surface without requiring cutouts or special preparation. This feature makes it particularly valuable for retrofit projects or where concrete has been cast without considering expansion joint requirements.
Surface-Level Installation

Adhesive Based Installation

High-quality adhesive ensures a secure bond between the expansion joint and the concrete substrate, enhancing watertightness and overall system integrity
Adhesive Based Installation

EPDM Construction

Made from EPDM or TPV, the GN-A offers durability, wear resistance and longevity, and resists road salts, fuel, lubricants, UV radiation and ozone.
EPDM Construction

System Drawing

System drawings for the GNA expansion joint seal cover GN-TYPE 1A (25 mm joint width), 3A (50 mm) and 7A (75 mm) for floor-to-floor, wall-to-wall and ceiling-to-ceiling conditions. Each size is downloadable as DWG and PDF.
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
gna covers gap sizes from 10mm to 60mm. 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 namejoint width (mm)height (mm)sightline (mm)movement capability (%)
gn-type 1a255738-40/+100
gn-type 3a506480-50/+100
gn-type 7a7589152-33/+150
from the technical datasheet

datasheet specifications

SeriesECOSEAL Series (GN-A)
System typeCompression Seal System
FixingBonded to the adjacent slabs with high-strength epoxy
Suitable movementThermal, Settlement
Movement capacityUp to +150 % (per type; see the system drawings)
Recommended forExterior areas where heavy pedestrian and light vehicular traffic are present; Areas where weather protection is critical; Areas having bends and/or gradients
ComponentsExtruded Elastomeric Rubber Insert which absorbs the expansion & contraction in the adjacent concrete slabs
Material: Elastomeric Rubber SealEthylene Propylene Diene Monomer (EPDM) or Thermoplastic Vulcanizate (TPV); finish: Smooth or Grooved Finish; black
Substrate toleranceSurface level within ±2 mm; gap level within ±5 mm
SizesPer the system drawings; profiles can be customized to requirements

Source: GNA technical datasheet. Sizes and dimensions: profile specifications above and the system drawings.

alternatives

similar products to consider

genb economy
genb
superseal series
exterior parking structures, multi-level car parks, stadiums, emergency and service vehicle areas and pedestrian bridges needing a watertight seal.
gap range
10 – 100mm
movement
±50%
view →
genfoam economy
genfoam
genfoam series
basements, below-grade structures, car parks, tunnels.
gap range
30 – 280mm
movement
±50%
view →
genfoam-s standard
genfoam-s
genfoam-s series
horizontal expansion joints in bridges, parking structures, highways and below-grade connections, including seismic, large-gap and retrofit joints.
gap range
25 – 200mm
movement
±50%
view →
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Documents & Resources

GN-A Technical Datasheet
PDF
GN-A Installation Instruction
PDF
GN-TYPE 1A
PDF
GN-TYPE 3A
PDF
GN-TYPE 7A
PDF
GN-TYPE 1A
DWG
GN-TYPE 3A
DWG
GN-TYPE 7A
DWG
GN-A Material Safety Datasheet
PDF
SPEC.GN-A
DOCX
SPEC_GNA_079513
DOCX PDF
Specs.L.GN-A.Short
XLSX
MAXMIN.L.GN-TYPE-1A-DWG
PDF
MAXMIN.L.GN-TYPE-3A-DWG
PDF
MAXMIN.L.GN-TYPE-7A-DWG
PDF
GNA_APPR_QIDDIYA-Water-Park-Hotel_Approval_20260103
PDF

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