Popular: Sikaflex · waterproofing · grout · data sheets
For basements, water tanks, pools and sewage works, make the concrete itself resist water with a low water–cement ratio, an integral waterproofing admixture and sealed construction joints. This is for new pours; it cannot fix a structure that already leaks.
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.
Keep the water–cement ratio below 0.5 and use a superplasticiser from the Sikament RB or ViscoCrete range to reach it (SikaControl-760 p.2). Sika ViscoCrete-3288 PK is noted for watertight concrete in dams and hydraulic structures (p.1); ViscoCrete-58 HT-PK for impermeable, dense concrete (p.1).
Production of site mixed During hot weather production of concrete with extended transportation or placing times Concrete with low water / cement ratio Concrete placement in congested steel reinforcement Self-compacting concrete Slim elements requiring a hi… (TDS p.1)
Sika® ViscoCrete®-58 HT-PK is mainly used for the following applications: For all Piling application including C.F.A, Concrete Containing GGBS, Micro Silica, Fly ash, Etc, Concrete in hot & windy weather with extended transportation and workability requirements, Production of Ready Mixed Concrete… (TDS p.1)
SikaControl-760 is a crystalline admixture: 1000 g per 100 kg of cement, or 5 kg per m³ for ready-mix, added with the cement and not into the gauging water (p.2). Liquid options: Sika Plastocrete N PK at 0.5 % of cementitious material (p.2), SikaControl-777 at 100–200 ml per 50 kg bag (p.2) or SikaPaver-707 at 200–400 ml per 100 kg (p.2).
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)
SikaControl®-777 can be used in all types of concrete and mortar that is used in all types of residential, commercial and infrastructural construction. (TDS p.1)
SikaPaver®-707 should be used in all structural concrete that is constantly or intermittently in contact with water such as sea walls, tunnels, basements, structural and pre-cast concrete in exposed superstructures. (TDS p.1)
Place a swelling sealant or profile in the centre of the joint. SikaSwell S-2 needs at least 8 cm cover on both sides in reinforced concrete (p.2); SikaSwell P Profiles need 10 cm (p.4). Neither is for movement joints (SikaSwell S-2 p.2; SikaSwell P Profiles p.3).
Joint sealing: Construction joints, Pipe and steel work penetrations through walls and floor slabs, Around all types of penetrations and construction joints, Construction joints in cable ducts, etc. Fixing / Adhering swellable profiles:, SikaSwell® A Profiles, SikaSwell® P Profiles. (TDS p.1)
To seal: Construction joints, Pipe and steel work penetrations through walls and floor slabs, Construction joints in precast concrete, Construction joints in tunnel segments, Construction joints in cable ducts, etc, Around all types of penetrations through concrete. (TDS p.1)
Where chlorides or aggressive water are present, Sika FerroGard CI 222 slows chloride and moisture ingress and protects the reinforcement (p.1); dose 5 L/m³ (p.2).
The right product here depends on your site. We confirm it before naming it.
Place the concrete quickly and compact it well (SikaControl-760 p.2). Agree joint positions with the engineer and avoid unplanned cold joints.
Ensure complete curing with a curing compound (SikaControl-760 p.2).
The right product here depends on your site. We confirm it before naming it.
For renders, screeds and masonry mortar, add Sika-1 PK at 1 part to 10 parts water, about 3 % of the cement content (p.2), or use Sikalite-101 PK powder in cement–sand mortars (p.1).
Sika®-1 PK is used for waterproofing of mortars and concrete, in particular for: Renders, masonry mortars and screeds, Reinforced and unreinforced concrete, Brick, concrete and stone substrates, Indoor and outdoor applications, such as basements, swimming pools, tunnels, water tanks, manholes, cu… (TDS p.1)
Sikalite®-101 PK is used to waterproof cement/sand mortars, screeds and renders for walls, facades, floor toppings and jointing mortars. (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 |
|---|---|---|---|
| 1. Design for low permeability | Sika ViscoCrete-3288 PK | 05 ltr jerry can | TDS p.1 · June 2025, Version 02.01 |
| 1. Design for low permeability | Sika ViscoCrete-58 HT-PK | 05 ltr jerry can | TDS p.1 · July 2026, Version 03.01 |
| 2. Add an integral waterproofing admixture | SikaControl-760 | SikaControl®-760 is available in 5 Kg & 25 kg pack. | TDS p.1 · March 2025, Version 04.01 |
| 2. Add an integral waterproofing admixture | Sika Plastocrete N PK | 05 ltr jerry can | TDS p.1 · February 2026, Version 01.01 |
| 2. Add an integral waterproofing admixture | SikaControl-777 | SikaControl®-777 is available in 5 litre & 220 kg. | TDS p.1 · March 2025, Version 04.01 |
| 2. Add an integral waterproofing admixture | SikaPaver-707 | 05 ltr jerry can 20 ltr plastic can 200 ltr drum 1000 ltr IBC Bulk supply in tanker is… | TDS p.1 · August 2026, Version 03.02 |
| 3. Seal construction joints and pipe penetrations | SikaSwell S-2 | 600 ml unipacs | TDS p.1 · May 2021, Version 02.01 |
| 3. Seal construction joints and pipe penetrations | SikaSwell P Profiles | — | TDS p.1 · May 2021, Version 01.01 |
| 7. Waterproof plaster, screeds and mortars | Sika-1 PK | 05 ltr jerry can 20 ltr plastic can 200 ltr drum 1000 ltr IBC Bulk supply in tanker is… | TDS p.1 · August 2026, Version 02.02 |
| 7. Waterproof plaster, screeds and mortars | Sikalite-101 PK | — | TDS p.1 · October 2023, Version 01.02 |
No. It is an admixture for new concrete and mortar (SikaControl-760 p.1). Existing leaks need crack injection or a surface waterproofing system; see our basement and crack guides.
For ready-mix, 5 kg per m³ is recommended; site mixes use 1000 g per 100 kg of cement (SikaControl-760 p.2).
SikaControl-760 states it does not reduce compressive strength (p.1). Plastocrete N PK lists increased strength and durability (p.1), but overdosing with extra water increases air and delays setting (p.2).
Yes. Construction joints and penetrations are the usual leak paths; SikaSwell S-2 is made to seal construction joints and penetrations in concrete (p.1).
Its TDS states that concrete containing it meets BS 6920 for contact with water (Sika FerroGard CI 222 p.1).
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.