Due to the closure of 3M Northallerton, this product is now discontinued. We do however have a short supply of remaining stock. Please contact our sales team for an updated stock quantity.
3M Clear Intumescent Sealer LS4000 CL is a clear sealer, for use with the 3M Scotchkote LS4000. Together, they provide a fire retardant coating to internal wooden substrates.
3M Clear Intumescent Sealer LS4000 CL formerly Thortex Pyro-Tech CS Lacquer, Copon LS4000 CL is a clear solvent based SEALER COAT FOR SCOTCHKOTE LS4000 which is fire-retardant and durable. It is specifically developed and MUST be in conjunction with Scotchkote Clear Intumescent LS4000 for internal wooden surfaces.
Fire retardant coatings are NOT designed to upgrade doors to fire doors, fire retardant coatings will provide Class O spread of flame but will NOT provide any minutes protection.
3M Clear Intumescent Sealer LS4000 CL is best used for interior wood and substrate surfaces where extra fire resistance is a necessity.
3M Clear Intumescent Sealer LS4000 CL can be applied using a brush, roller or airless spray and offers very good application properties. It provides moisture protection to the Scotchkote Intumescent Coating LS4000 without affecting the performance of fire resistance.
IMPORTANT INTUMESCENT PRODUCT NOTE: Always contact Promain’s technical team prior to purchase to obtain a tailored project specification and the advice necessary. The information displayed on this website should only be used as a guide. Promain UK Limited will not be held liable for any resulting damage to property, human life or monetary costs incurred due to incorrect specification, preparation, application or maintenance that has occurred due to negligence by either the purchaser or applicator. This includes your failure to have contacted us to obtain the relevant advice/specification.
Surfaces and Environment
3M Clear Intumescent Sealer LS4000 CL formerly Thortex Pyro-Tech CS Lacquer, Copon LS4000 CL is used for interior wooden surfaces and substrates which have been prepared and primed correctly in both domestic and industrial surroundings.
- Formerly Thortex Pyro-Tech CS Lacquer, Copon LS4000 CL
- A single pack solvent based durable clear sealer
- Specifically developed and MUST be used with Scotchkote clear intumescent LS4000 for internal wooden surfaces
- Offers good application properties by brush, roller or spray
- Available in a satin finish
- Provides a degree of moisture protection to the scotchkote intumescent coating LS4000 without detriment to the fire performance
- LS4000 CL is touch dry in 2 hours
- Theoretical Coverage rate 16.7m2 per litre
- Available in 5 litres
The manufacturers data sheets are available for download from this website. It is your responsibility to read and understand all aspects of the data sheets before you place an order and prior to application. Please pay special attention to the preparation, mixing and application temperatures of the product, cleaning of substrate and environmental factors such as temperature, rain etc. Quoted coverage rates are based on the manufacturers theoretical rates and may vary depending upon substrates absorption, texture and application. We always recommend a test is carried out to ensure suitability.
Customer further agrees that Promain have no liability for any errors or omissions contained within the Product Data Sheets and are not liable for failure due to misapplication or inadequate substrate cleaning and preparation. For more information please refer to our Terms & Conditions.