Roof · Expansion Joint
Dseal SkyBridge
SkyBridge is Dseal's robust roof expansion joint system, engineered to absorb thermal movement and lock out weather across roof joints ranging from 50 mm to 500 mm wide.
Click image to zoom · 2D blueprint, 3D render & product photo
SkyBridge is a roof expansion joint system that bridges the structural gap where two roof slabs meet, allowing each section to expand and contract independently with temperature change. Built from anodised aluminium, sprayed aluminium, stainless steel or brass cover plates over a sealing assembly, it is installed on flat and pitched roofs of commercial, institutional and industrial buildings where thermal movement and water ingress must both be controlled.
SkyBridge accommodates joint widths from 50 mm to 500 mm and combines neoprene weather washers with PU seals and gasketed fasteners to form a continuous weatherproof barrier. Snow-load rated covers are available for high-altitude and hill-station projects, and the metal cover options let specifiers match durability, finish and corrosion resistance to the site environment.
Key Benefits
- Protects roof slabs from cracking by absorbing thermal expansion and contraction year-round.
- Keeps interiors dry with a layered neoprene-and-PU weatherproof seal at the joint.
- Handles a wide 50-500 mm range, suiting both modest and large structural gaps.
- Snow-load cover option safeguards roofs in hill and high-altitude regions.
- Choice of aluminium, stainless steel or brass finishes to match site exposure and budget.
- Durable metal construction means a long service life with minimal upkeep.
Applications
- Flat and pitched roofs of commercial complexes and office towers.
- Shopping malls, airports and large-span institutional roofs.
- Industrial sheds and factory roofing with long thermal runs.
- Hospitals, schools and government buildings requiring reliable weather sealing.
- Hill-station and high-altitude projects needing snow-load covers.
- Hotels, stadiums and exhibition centres with extensive roof areas.
Features & Construction
- Cover plates in anodised aluminium, sprayed aluminium, stainless steel or brass.
- Neoprene weather washers combined with PU seals for multi-stage water resistance.
- Gasketed fasteners that seal each fixing point against moisture penetration.
- Accommodates joint movement across a 50-500 mm width range.
- Optional snow-load rated covers for heavy environmental loading.
- Aluminium profiles conforming to ASTM B221-02 / ASTM 6063 standards.
Technical Specifications
| Type | Roof expansion joint |
|---|---|
| Joint width | 50 mm – 500 mm |
| Sealing | Neoprene washers + PU seals |
| Materials | Anodised/sprayed aluminium, SS, brass |
Installation Guide
- Clean and level both joint edges, removing debris and laitance from the slab faces.
- Position the base sealing assembly with neoprene weather washers along the gap.
- Set the PU seal to span the joint and confirm continuity at all transitions.
- Align the chosen metal cover plate centrally over the joint opening.
- Fix with gasketed fasteners at the specified spacing, sealing each point.
- Lap and bond cover sections at joints and direction changes for continuity.
- Inspect the run and apply sealant at terminations to complete the weather barrier.
Maintenance & Care
Inspect SkyBridge twice a year and after heavy monsoon or snowfall, checking that neoprene washers, PU seals and gasketed fasteners remain intact and that cover plates are firmly fixed. Clear leaves, silt and debris from the joint so water and movement are never obstructed.
Replace any cracked or aged seals promptly and re-tighten loose fasteners to preserve the weatherproof barrier. With routine care the anodised aluminium, stainless steel or brass covers from Dhawan Associates deliver long, dependable service across India's climate extremes.
FAQs
SkyBridge — Frequently Asked Questions
What is the Dseal SkyBridge roof expansion joint?
SkyBridge is a roof expansion joint cover system that lets adjoining roof slabs move with temperature changes while keeping water out. It uses metal cover plates over a neoprene and PU sealing assembly and is manufactured in India by Dhawan Associates.
What joint widths does SkyBridge cover?
SkyBridge accommodates roof joint widths from 50 mm to 500 mm. For projects outside this range, contact Dseal to discuss a tailored configuration.
What materials are the SkyBridge cover plates made of?
Cover plates are available in anodised aluminium, sprayed aluminium, stainless steel and brass, so you can match the finish and corrosion resistance to your roof environment.
How does SkyBridge keep the roof waterproof?
It combines neoprene weather washers with PU seals and gasketed fasteners, creating layered protection that seals both the joint opening and every fixing point against rain.
Is SkyBridge suitable for snowfall regions?
Yes. Dseal offers snow-load rated covers for SkyBridge, making it suitable for hill stations and high-altitude projects across northern India where roofs carry snow loads.
Which aluminium standard does SkyBridge comply with?
The aluminium profiles conform to ASTM B221-02 and ASTM 6063, recognised standards for extruded aluminium used in building expansion joints.
How is SkyBridge installed on a roof?
The base seal is laid along the joint, the metal cover plate is centred over the gap, and gasketed fasteners fix it down while sealing each point. Dseal supplies installation guidance with every order.
How do I maintain a SkyBridge joint?
Inspect it twice yearly and after heavy weather, clear debris from the joint, re-tighten loose fasteners and replace any aged seals to keep the weather barrier intact.
What is the difference between SkyBridge and the Roof Seal TPE?
SkyBridge is a metal-covered roof joint system for 50-500 mm gaps, while the Roof Seal TPE is a flexible thermoplastic seal supplied in roll form. SkyBridge suits structural metal-cover applications; TPE suits flexible roll-applied sealing.
Can SkyBridge be made in custom sizes?
Yes. As the manufacturer, Dhawan Associates can supply SkyBridge in custom widths, lengths and finishes to suit your specific roof design.
Who manufactures SkyBridge?
SkyBridge is manufactured by Dhawan Associates under the Dseal brand, India's leading maker of building expansion joint systems.
Where can I buy SkyBridge in India?
SkyBridge is supplied across India directly by Dseal (Dhawan Associates). Call +91 93109 97953 for pricing and project assistance.
Does SkyBridge handle thermal movement in both directions?
Yes. The system is designed to absorb both expansion and contraction as roof slabs respond to daily and seasonal temperature swings.
Is SkyBridge certified to quality standards?
Dhawan Associates is certified to ISO 9001:2015, ISO 14001:2015 and ISO 45001:2018, covering quality, environmental and occupational health and safety management.
Which finish should I choose for a coastal project?
For coastal or highly corrosive sites, stainless steel or brass covers offer the best resistance. Dseal can advise on the right finish for your location.
Can SkyBridge be used on both flat and pitched roofs?
Yes. SkyBridge is suitable for flat and pitched roofs across commercial, institutional and industrial buildings.
Explore More
Related Products
Roof Seal — TPE
TPE/TPV roof seal system delivering flexible, weather-resistant sealing for roof and exterior expansion joints.
View Product →
Water Barrier + Outlet
Expansion joint water barrier with an integrated outlet pipe to collect and drain water away from the joint.
View Product →
Bellow-Grade System
Watertight, durable and flexible below-grade expansion joint system for foundations, tunnels and subterranean structures.
View Product →
ParkGuard
Heavy-duty parking expansion joint system engineered for high-traffic parking structures, built from ASTM 6063 T6 aluminium with durable EPDM/nitrile seals.
View Product →
DriveFlex
Mechanical floor expansion joint for interior carpark levels, access ramps and slow vehicle traffic — flexible, hard-wearing and easy to maintain.
View Product →
StarGuard
Floor-to-floor expansion joint cover system delivering a robust, low-profile transition for interior floors.
View Product →