Popular: Sikaflex · waterproofing · grout · data sheets
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.
General guidance based on the manufacturer data sheets. Site conditions differ: confirm the system with MCT before you start. Where we do not name a product, ask us and we will confirm the right one.
Divert or stop the flow. Remove silt, vegetation, loose concrete and old joint filler. Settled embankments or failed slopes need an engineer's assessment before relining.
SikaControl-760 (dams, canals, p.1) or Sika Plastocrete N PK (canals, p.1) in the concrete. Cast Sika Waterbar V-20 L SH into construction joints and O-20 SH into expansion joints; both list canals (p.1).
SikaControl®-760 should be used in all structural concrete that is constantly or intermittently in contact with water such as sea walls, tunnels, basements, structural and precast concrete. SikaControl®-760 can also be used as crystalline waterproofing admixture for cement mortars and plasters. T… (TDS p.1)
Sika® Plastocrete® N PK is recommended for use in waterproofing of masonry and concrete structures such as: Reservoirs and dams , Sewerage works , Canals , Culverts, tunnels , Water tanks, swimming pools and wherever waterproof concrete is required . (TDS p.1)
Sika Waterbar® V-20 L SH is used to waterproof construction joints in concrete structures such as those in water retaining structures, including reservoirs, canals, sewage plants, dams, swimming pools etc. (TDS p.1)
Sika Waterbar® O-20 SH are used to waterproof expansion joints in concrete structures such as those in water retaining structures, including reservoirs, canals, sewage plants, dams, swimming pools etc. (TDS p.1)
Stop water infiltration with a Sika-4a quick-set mortar (culverts, p.1). Rebuild spalled and eroded areas with SikaRep PK (p.1) or Sika MonoTop-612 PK, using chilled water above 35 °C (MonoTop-612 PK p.2).
The right product here depends on your site. We confirm it before naming it.
SikaSeal-105 PK lists sea walls and irrigation channels (p.1). For brackish or sea water, SikaTop-550 Seal lists coating seawater channels and protection against brackish water (p.1), and SikaTop-551 Seal also lists seawater channels (p.1).
SikaSeal®-105 PK is used as an economical and easy to use as waterproofing slurry both for external and internal applications. SikaSeal®-105 PK is suitable for the following applications: Water and sewage works, such as tanks and manholes, Basements and lift pits, Retaining walls and bridge struc… (TDS p.1)
As a waterproof lining for water retaining structures. (TDS p.1)
SikaTop®-551 Seal is ideal: To reface and even out variations in concrete surfaces, As a waterproof lining for water retaining structures, For coating seawater channels, Sealing and coating tie bar holes to ensure water tightness, To provide foundation protection, As a waterproof coating for wet … (TDS p.1)
Floor joints: Sikaflex-2c SL, self-levelling and listed for canal and reservoir joints (p.1); allow 3 days' cure and prime before immersion (p.2). Sloped or vertical joints: Sikaflex-1A, non-sag and listed for canal and reservoir submerged joints (p.1); allow full cure before immersion (p.5).
Intended for use in all properly designed working joints with a minimum depth of 1/4 inch. (TDS p.1)
Sealing joints for: Movement and connections, Facade elements, Vertical and horizontal applications, Window and door frames, Reglets, Flashing. (TDS p.1)
A starting point for a site proposal. Quantities, prices and the final specification follow a site visit or photos.
| Step | Product | Pack | Source |
|---|---|---|---|
| 2. New lining: watertight concrete and joints | SikaControl-760 | SikaControl®-760 is available in 5 Kg & 25 kg pack. | TDS p.1 · March 2025, Version 04.01 |
| 2. New lining: watertight concrete and joints | Sika Plastocrete N PK | 05 ltr jerry can | TDS p.1 · February 2026, Version 01.01 |
| 2. New lining: watertight concrete and joints | Sika Waterbar V-20 L SH | — | TDS p.1 · May 2021, Version 01.01 |
| 2. New lining: watertight concrete and joints | Sika Waterbar O-20 SH | 15 m rolls | TDS p.1 · May 2021, Version 02.01 |
| 4. Waterproof coating | SikaSeal-105 PK | — | TDS p.1 · February 2026, Version 02.01 |
| 4. Waterproof coating | SikaTop-550 Seal | — | TDS p.1 · March 2024, Version 01.01 |
| 4. Waterproof coating | SikaTop-551 Seal | SikaTop®-551 Seal is available in 20 kg double pack. Consisting of 5 kg Li- | TDS p.1 · October 2025, Version 03.01 |
| 5. Seal the joints | Sikaflex-2c SL | — | TDS p.1 · May 2021, Version 01.01 |
| 5. Seal the joints | Sikaflex-1A | 10 fl. oz. cartridge, 12 cartridges per box | TDS p.1 · May 2021, Version 01.01 |
No. Sikaflex-2c SL needs 3 days' cure and a primer before total immersion (p.2), and Sikaflex-1A needs full curing before immersion (p.5).
SikaTop-550 Seal lists protection against brackish water and coating seawater channels, and has high resistance to chloride ion diffusion (p.1).
Sikaflex-1A is a non-sag sealant (p.1), so it stays in sloped and vertical joints. Sikaflex-2c SL is self-levelling and ideal for horizontal joints (p.1).
SikaSeal-105 PK needs a sound surface with at least 1.0 N/mm² pull-off, pre-dampened (p.2). Weak brickwork must be repaired first. Ask us: it depends on site conditions.
Steps and product facts are taken from the manufacturer data sheets (page cited). Products are named only where the data sheet confirms the use; quantities follow a site visit or photos. General guidance: check the data sheet or ask us before you start.