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Swimming Pool Sealant:  




Neutral curing silicone sealant for swimming pools and permanently wet areas


Product Description


Sikasil-Pool is a one part neutral curing silicone sealant for use in swimming pools and permanently wet areas.




Sikasil-Pool is suitable for joints in and around swimming pools, areas under permanent water immersion and frequently wet areas, such as shower rooms in sports halls or leisure facilities, between ceramics, tiles, concrete, glass, metals and other typical building substrates, etc.


Characteristics / Advantages


Very high water resistance

High chlorine resistance (as required in swimming pools due to use of disinfecting solutions)

Extremely high resistance to fungal attack

Excellent UV and weathering resistance

High tear resistance


High elasticity and flexibility


Product Data






White and Transparent - 300ml Cartridges

Transparent, Grey and Blue - 600ml Sausages

(Grey and Blue only available in Sausages)




300ml Cartridges (Carton of 12). 600ml Sausages (Carton of 20)




Storage Conditions / Shelf Life


12 months from date of production if stored in undamaged and unopened original sealed containers, in dry conditions and protected from direct sunlight at temperatures between +10 C and +25 C.


Technical Data


Chemical Base         

Oxime silicone, neutral curing


1.05 kg/l (transparent colour) (DIN 53 479)

Skinning Time         

5 minutes (+23C / 50% r.h.)

Curing Rate            

2.0 mm/24h (+23C / 50% r.h.)

Movement Capability


Sag Flow                

< 2 mm (DIN EN ISO 7 390)

Service Temperature

-40C to +180C (Dry conditions)


Mechanical / Physical Properties


Tensile Strength      

1.5 N/mm2 (+23C / 50% r.h.) (ISO 8339)

Tear Strength         

4.0 N/mm2 (+23C / 50% r.h.) (DIN 24 method C))

Shore A Hardness              

20 (after 28 days) (ISO 868)


0.3 N/mm2 at 100% elongation (+23C / 50% r.h.) (ISO 8339)

Elastic Recovery

> 90% (+23C / 50% r.h.) (ISO 7389)


System Information


Application Details




Joint Design:

The joint width must be designed to be within the movement capability of the sealant. Movement joint widths with Sikasil Pool shall be > 10 mm and < 30mm. Sikasil Pool shall not be used in joints of more than 30mm width and a minimum depth or thickness of 6 mm must be applied.


Joint width

10 mm


Joint depth

8 mm


Joint length / 300 ml

~ 3.5 m


Joint length / 600ml




Substrate Quality


Clean and dry, homogeneous, free from oils and grease, dust and loose or friable

particles. Cement laitance must be removed.


Substrate Preparation / Priming


Stainless, steel, PVC, GRP, Stainless steel


Surfaces must be cleaned using a fine abrasive pad followed by SikaCleaner205 using a clean towel / cloth. There shall be a flash-off time of at least 15 min.


Concrete, tiles, glazed tiles:


Surfaces must be primed with SikaPrimer-3N using a brush. Before sealing the joint there shall be a flash-off time of at least 30 min. (max. 8 hrs.). For other substrates please contact the Sika Technical Service Department for advice.


Important note: Primers are only adhesion promoters. They neither substitute for the correct cleaning of the surface nor improve their strength significantly.


Application Conditions / Limitations


Substrate Temperature +5 C min. / +40 C max.


Ambient Temperature +5 C min. / +40 C max.


Substrate Moisture Content Substrates must be dry

Application Instructions


Application Method / Tools


Sikasil-Pool is supplied ready to use.

After suitable joint and substrate preparation, insert the Backing Rod to the required depth and apply primer if necessary. Insert cartridge into sealant gun and firmly extrude Sikasil-Pool into the joint making sure that it is in full contact with the side of the joint. Fill the joint and avoid air entrapment. Tool Sikasil-Pool firmly against the joint sides to ensure good adhesion.

Use masking tape where sharp and exact joint lines or exceptionally neat edges are required. Remove the tape whilst the sealant is still soft. Finish the surface of the joint with a suitable smoothing liquid for a perfect sealant surface.


Cleaning of Tools


Clean all tools and application equipment with Sika Sealant Remover / Sika TopClean-T immediately after use. Remove hardened / cured material mechanically.


Notes on Application / Limitations


Do not use on bituminous substrates, natural rubber, chloroprene, EPDM or on building materials which might bleed oils, plasticizers or solvents.

Do not use in totally confined space because Sikasil-Pool requires atmospheric moisture to cure.

Do not use Sikasil-Pool for structural glazing, insulated glazing, food contact applications, or for medical or pharmaceutical use.


Recommendation for use in swimming pools / warm water whirlpools:


Cure Sikasil-Pool fully before the filling of the pool, minimum 4 days up to 21 days.

(dependent on the temperature, ambient humidity and the thickness of the sealant applied). The required vulcanisation or curing time extends with the increasing thickness of the sealant applied.

The resistance of a sealant to chlorine is dependent on the pH value of the water and the amount of free chlorine.

Sikasil-Pool can be used in swimming pools and warm water whirlpools pools in which the pH value of the water is maintained between 6.5 and 7.6 and the free available chlorine is less than 5 mg/litre.
To reduce the risk of fungal attack of Sikasil-Pool, the free available chlorine level shall not fall below 0.3 mg/litre in swimming pools and 0.7 mg/litre in warm water whirlpools. Continuous water circulation is required to avoid variable chlorine concentrations in which local chlorine concentrations may fall below these minimum levels. (Note that short term exposure to water with free available chlorine of up to 10 mg/litre can be tolerated).

If there is a very strong smell of chlorine, check the p-H value accordingly.

Regular water circulation is required and must not be interrupted. If interrupted, partial or variable chlorine concentrations arise and may locally fall below the minimum concentration.

Do not use acid based detergents as they increase the danger of fungal attack.

In case of a fungal attack of the sealant must be removed completely when joints are reconstructed.


Value Base


All technical data stated in this Technical Data Sheet are based on laboratory tests. Actual measured data may vary due to circumstances beyond our control.


Health and Safety Information


For information and advice on the safe handling, storage and disposal of chemical

products, users shall refer to the most recent Material Safety Data Sheet containing physical, ecological, toxicological and other safety-related data.


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