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From our technical experts

Lo-Chlor Spa Leak Sealer


  • For minor leaks in Hot Tubs & Spas
  • For Concrete & Acrylic Spas
  • Very easy and economical to use


Spa Leak Sealer is a concentrated formulation to seal minor leaks in hot tubs and spas. It can be used for leaks in either the shell and/or internal plumbing system. Please note: Lo-Chlor Spa Leak Sealer should not be used when the hot tub water temperature is below 6 degrees Celsius (°C).

  • For minor leaks in Hot Tubs & Spas
  • It may be used with all known spa treatments
  • Very easy and economical to use
  • Can prevent unwanted spend on unnecessary works
  • For Concrete & Acrylic Spas
  • Concentrated formula
  • Full instructions on packaging
  • 450ml Bottle



  1. Remove all cartridge filters, or for sand filters select the BYPASS option (if applicable) prior to dosing the product.
  2. With the pump running add the required dose of Spa Leak Sealer (see dose rate below) slowly through the skimmer or in front of any other suction intake. AIR BLOWERS MUST NOT BE RUN DURING THE TREATMENT PROCESS.
  3. Spa Leak Sealer is very heavy and will sink to the deepest point, which in most cases will be below the bottom drain, therefore the product must be stirred back into suspension every 45 minutes, whilst the water circulates.
  4. Leave the water circulating for a minimum of 3 hours after which time check to see if the leak has stopped (if visible) and/or check the water level. If the leak has slowed down continue to run the circulation system for another 3 hours.
  5. When the leak has stopped turn off the pump and let any residue settle to the bottom of the spa – this can then be removed with a suitable spa vacuum.
  6. Replace the cartridge filters and let the system circulate for 45 minutes, after which time remove the cartridges and thoroughly clean with fresh water to remove any product residue from the filter veins.
  7. After the leak has stopped, it is recommended that the hot tub/spa is fully drained and left empty for a minimum of 48 hours for the product to cure.

N.B. The leak may be slowed down after one application, if this is the case we recommend a second application.

DOSE RATE: Spa Leak Sealer should be dosed at a rate of 225mls per 2,000 litres of water.

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Returns Policy

Your rights to return goods are protected under the EU Distance Selling Directive.

You are entitled to cancel your order and return the goods within 7 working days for a full refund not including the cost of delivery. Do this by contacting us by email or telephone and quoting the order number supplied to you. Your refund will be paid within 30 days. You are responsible for the cost and risk of loss or damage when returning the goods, so you should take out enough postal insurance to cover their value. This cancellation policy does not affect your rights when we are at fault - for example, if goods are faulty or incorrectly-described.

Exclusions: Bespoke items (made to measure items) are not included and cannot be returned. If a bespoke item is faulty then the product warranty /guarantee will take effect.

Any goods returned should be in saleable condition.

These terms apply to your order. We may change our terms and conditions at any time, so please do not assume that the same terms will apply in the future.

None of these terms affect your legal rights and these are not diminished in any way. If any term is held to be invalid under any applicable statute or rule of law, that term is automatically omitted from the terms to minimum extent necessary to comply with the law and without affecting the validity or enforceability of the remainder.

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