Expansion Joint Waterproofing That Moves With Your Building
Expansion joint waterproofing protects the gaps deliberately left between sections of a building. These joints allow concrete and steel to expand in the heat and contract when it cools. In the UAE that movement is large and happens every day, which is why expansion joints are one of the first places a roof, podium or car park deck starts to leak.
Leak Lock Insulation Contracting reseals expansion joints with flexible systems that stretch and compress without tearing. We work on roofs, parapets, podium slabs and the junctions between old and new buildings, for facility managers, building owners and contractors who need an expansion joint sealing job in Dubai done once and done right.
Signs of a Failed Expansion Joint
For example, clients contact us for one or more of the following reasons.
- Leaks in a straight line: water appears below along the length of the joint.
- Cracked or missing filler: the old sealant has hardened and split.
- Loose cover plates: metal covers have lifted or lost their fixings.
- Rust stains: water is reaching the steel below the joint.
- Debris in the joint: sand and stones stop it from moving freely.
- Damp at building junctions: leaks where an extension meets the original structure.
Our Expansion Joint Sealing Services
Roof Expansion Joints
Joints across flat and metal roofs sealed with a flexible membrane loop.
Joint Cleaning & Preparation
In addition, old sealant and debris removed down to sound edges.
Flexible Sealant Systems
Backing rod and movement-rated sealant for narrower joints.
Membrane Bridging
Similarly, EPDM membrane laid across the joint with slack to absorb movement.
Cover Plate Works
Metal cover flashings fabricated, refixed or replaced.
Wall & Parapet Joints
Also, vertical joints treated so the seal is continuous from roof to wall.
Our Expansion Joint Waterproofing Process
Because every site is different, we adapt these steps to your expansion joint waterproofing project.
- InspectionBefore anything else, we measure joint width and movement and trace the leak path.
- RemovalThen, failed sealant, filler and loose covers are taken out.
- PreparationAfter that, joint edges are cleaned and repaired to give a firm bond.
- SealingAs soon as that is done, the flexible sealant or membrane system is installed.
- Protection & TestFinally, covers are fitted and the joint is water tested where possible.
Materials & Methods
The sealing method depends on the width of the joint and how much it moves. Narrow joints are sealed with backing rod and flexible sealant. Wider roof joints are bridged with EPDM membrane formed into a loop, so the membrane is never stretched tight. Metal cover flashings are made by our fabrication team where needed.
In short, the work includes the following.
- EPDM membrane bridging with a movement loop
- Backing rod and movement-rated sealant
- Fabricated metal cover flashings
- Edge repair before sealing
Why Choose Leak Lock for Expansion Joint Waterproofing
Above all, clients choose us for these reasons.
- Movement understood: systems are selected for the joint width and expected movement.
- Waterproofing plus metalwork: seals and cover plates handled by one team.
- Safe roof access: in addition, our team uses harnesses, lifelines and planned access for all expansion joint waterproofing work.
- Written quotation and warranty terms: as a result, you see the scope, price and warranty for your expansion joint waterproofing before work starts.
Areas We Serve
We seal expansion joints on roofs and slabs in Dubai, Abu Dhabi, Sharjah, Ajman, Umm Al Quwain, Ras Al Khaimah and Fujairah. As a result, one team can handle expansion joint waterproofing at all of your sites.
Dubai Abu Dhabi Sharjah Ajman Umm Al Quwain Ras Al Khaimah Fujairah
Expansion Joint Waterproofing FAQs
Questions about expansion joint sealing in Dubai. Also, you can call us with any other question.
The joint opens and closes with temperature every day. Sealants eventually harden under UV light and lose their stretch, then split or pull away from the edges, leaving a gap for water.
On roofs, yes. On trafficked decks we plan the work in sections so that access can be maintained.
Service life depends on movement, exposure and traffic. Warranty terms for your specific joint are stated in the quotation.
General-purpose silicone is not designed for the movement of a structural joint. A movement-rated sealant or a membrane system should be used.
Yes. Broken or crumbling edges are repaired first, because the seal can only be as good as the surface it bonds to.
Related Services
Concrete, Gravel & Tiles Roof Waterproofing
Waterproofing systems for flat concrete, gravel and tiled roofs.
Read MoreRoof Drain Waterproofing
Watertight detailing around roof drains and outlets.
Read MoreGlass Sealant Joints Waterproofing
Renewal of failed sealant joints around glass and glazing.
Read More
In addition, you can see all of our waterproofing and fabrication services. Otherwise, contact our team to discuss your project.
Seal Your Expansion Joints
Share the joint location and length. We will inspect it and propose the sealing system that suits its movement. After that, we will arrange a suitable time to visit.