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Joint Movement & Leakage

Leaking or open joints — Expansion joints, gaps around windows and façades. Show 5 products ↓

  1. Step 1 (completed)Leaking or open joints
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Leaking or open joints
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Sikasil® WS-305 Black

Sikasil® WS-305 Black

Sika Confirm availability

Why: Sikasil® WS-305 S can be used for weatherproofing sealing applications where durability under severe conditions is required. (TDS p.1)

  • Meets requirements of GB/T 14683 and ASTM C 920 for Type S, Grade NS, Class 50 (movement capability ± 50 %)
  • Very good UV and weathering resistance
  • Adheres well to many substrates including glass, metals, coated and painted metals, plastics and wood
Surfaces
glass
Pack
INFORMATION Unipack 600 ml
System
Facade & Movement Joint Sealing
Data sheet Request a quotation for Sikasil® WS-305 Black on WhatsApp

Product facts on these cards are taken from the manufacturer data sheets (page cited on each card) and are being reviewed by our technical team. Always check the data sheet before use.

Step-by-step

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Balcony section with a waterproof coat under the screed and tiles, turned up the wall, and a railing post. Terrace and balcony waterproofing Balconies, terraces and open verandas that people walk on, usually finished with tiles. The waterproofing goes under the tile bed and turns up at walls, door thresholds and drains. 6 steps Retaining wall section with a coating on the soil side, a gravel drain and a weep pipe through the wall. Retaining walls Walls that hold back soil and water, such as boundary walls on slopes, ramps, and the walls of basements and underpasses. Waterproof the soil face, seal the joints, and treat the exposed face and any leaks. 7 steps Section of a new concrete swimming pool with waterproof coating and tiles on the inside, a sealed pipe and a floor joint New swimming pool (concrete shell) Build the pool shell watertight from day one: waterproof concrete, sealed joints and pipe entries, a cementitious waterproof coating, then pool-rated tile adhesive and grout. A structural engineer designs the shell itself. 7 steps Section of an underground sewage manhole with pipes, step irons and a protective lining on the inside faces Sewage tanks, manholes & septic tanks Sewage and wastewater structures leak out, let groundwater in and are eaten away by aggressive effluent. Plug and rebuild the concrete, waterproof it, and add a chemical-resistant lining where the effluent is aggressive. 7 steps Two treatment plant tanks: a covered clean-water tank with a thin lining and an open settling tank with a thick lining Water & wastewater treatment plants Clarifiers, filter beds, clear-water reservoirs and process tanks need watertight concrete, sealed joints and the right lining for each water type. Drinking-water compartments take only products approved for potable contact. 6 steps Cross-section of a lined canal with water, a waterproof coating on the concrete lining and sealed panel joints Canals, channels & open drains Irrigation canals, water channels, nullahs and storm drains lose water through cracked lining, open joints and eroded concrete. Repair the lining, waterproof it, and seal joints with sealants made for submerged use. 5 steps
See all 13 step-by-step guides
Two concrete slabs on columns with a gap between them sealed with orange sealant over a round foam rod Building expansion and movement joints The gaps between building blocks, slabs, walls and roofs that let the structure expand, shrink and settle. They need a sealant or tape matched to the movement, a correctly sized joint and a backer rod, or water gets in and edges break. 7 steps Floor joint with steel edge angles and orange sealant over a foam rod, and a heavy wheel rolling towards it Floor joints in car parks, warehouses and roads Saw-cut, expansion and connection joints in floors that carry people, cars, forklifts or trucks. The sealant must take both traffic and movement, and the joint must be sized for it. 6 steps Building facade panels with orange sealed joints, and a close-up of one joint with sealant over a foam rod in the rain Facade joints (concrete, block, precast and cladding) Movement and connection joints on outside walls: between precast panels, at floor slabs, around infill panels and in metal or stone cladding. A sound joint keeps monsoon rain out and lets the facade move. 7 steps Window in a brick wall with an orange sealant bead round the frame, and a close-up of the frame-to-wall joint Window and door frame sealing Sealing the gap between aluminium, uPVC, steel or timber frames and the wall, plus glass-to-frame and interior finishing joints. This is a common place for monsoon rain to get into a home. 6 steps Two double-glazed panels meeting at an aluminium mullion, sealed with orange silicone, with rain outside Glazing, curtain walls and shopfronts Weather-sealing joints in glass curtain walls, windows, shopfronts and metal cladding, and the specialist silicones used in structural glazing and insulating glass. This is professional facade work and needs project-specific adhesion tests. 6 steps Joint between two wall sections sealed on both faces with orange fire-rated sealant, with flames on one side Fire-rated joints Joints in fire-rated walls and floors, such as stair and lift shafts, compartment walls and plant rooms, must hold back fire and smoke for the rated time. The rating comes from a tested configuration, not from the sealant alone. 6 steps Pipe passing through a concrete floor slab with an orange sealing collar round it and orange sealant at the top Pipe and service penetrations Pipes, ducts and cables passing through basement walls, tank walls, roofs and fire-rated floors are weak points for water and fire. Seal each one for its job: watertight, weathertight, fire-rated, or a simple interior gap. 6 steps
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