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Roof Expansion Joint Covers

6 products 10–280mm gap range $–$$–$$$ price range
filter showing 6 of 6 products
load type
movement
surface
fixing
watertight
budget
economy
genfoam
GENFOAM
gap range
30 – 280 mm
movement
±50%
mounting
recessed
fixing
no visible fixings
waterproof
yes
best for: basements, below-grade structures, car parks, tunnels.
$ economy
view →
standard
genfoam-a
GENFOAM-A
gap range
48 – 280 mm
movement
±50%
mounting
recessed
fixing
no visible fixings
waterproof
yes
best for: wall-to-floor transitions, column joints, and angular connections.
$$ standard
view →
standard
genfoam-s
GENFOAM-S
gap range
25 – 200 mm
movement
±50%
mounting
recessed
fixing
no visible fixings
waterproof
yes
best for: joints requiring sealant overlay, high-traffic areas needing enhanced bonding.
$$ standard
view →
economy
gna
GNA
gap range
10 – 60 mm
movement
±25%
mounting
recessed
fixing
no visible fixings
waterproof
yes
best for: budget-conscious projects, residential, and light commercial applications.
$ economy
view →
premium
r2001
R2001
gap range
38 – 188 mm
movement
±100%
mounting
surface mount
fixing
visible screws
waterproof
yes
best for: flat roofs, parapets, rooftop walkways, and building envelopes.
$$$ premium
view →
premium
r2003
R2003
gap range
50 – 250 mm
movement
±100%
mounting
surface mount
fixing
visible screws
waterproof
yes
best for: flat roofs, parapets, and rooftop applications requiring weatherproof expansion joint coverage.
$$$ premium
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Watertight roof expansion joint covers

Every roof joint is a waterproofing detail first and a movement detail second. The Genotek roof range - 6 dedicated systems for gaps from 10 mm to 280 mm, all watertight - closes the joint with a continuous weather barrier while accommodating thermal and seismic movement. Raised-curb covers protect the membrane upstand on flat roofs; low-profile systems suit terraces and walkable roofs; flexible membrane systems handle complex geometries and parapet transitions.

All systems are aluminium with UV-stable seals, engineered for the Gulf's demanding thermal cycling. Factory-formed corners, tees and end dams are available for every profile - the junctions are where most site-made roof joints fail. If your roof plan shows a joint crossing parapets, plant areas or level changes, send it across: we will detail every junction and return a complete bill of components, not just the straight runs.

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