Topcoat with Fireshield 1150. Fireproofing of steel constructions.

Topcoat Surface






Lightcems Topcoat is a grey ingrained fiber reinforced dry mortar. The mortar has water repellent and a diffusion open material. The product contains Portand cement, sand up to 0,5mm, PP-fibers and plasticizing and seal-ing additives. Topcoat does not contain brominated flame retardant materials.


The products bonding characteristics has been a primary focus in the development stage, a newly mixed plaster will bond to all porous surfaces like concrete and mountain sides. It will however not bond to polished surfaces like epoxy. When the wet plaster is placed on a surface, it will intrude into the pores, expanding under the hardening process, creating a very strong bond. A wash using high pressured water with a maximum of 300 bars, will give the product back its original appearance and structure.




Topcoat is a specially developed, surface protective mortar, which is used in places where one needs a strong and easily washa-ble surface. Topcoat effectively prevents intrusion of grease, oil and dust. The product can withstand frost and defrost fluctuations.






As with all applications it is essential to apply to a clean, sound surface free from grease, oil, dust and loose material. Due to Topcoats cement base, alkali sensitive primers and paint should be removed prior to application of Topcoat, if the paint cannot be removed, a sealing coat should be applied (See Lightcem for advice). All loose rust or paint should be removed prior to Topcoat applica-tion. Concrete substrates must be adequate-ly prepared, all surfaces containing grease or oil should be cleaned with detergent and care taken to ensure the oil/grease is re-moved and not spread around. Warm surfac-es should be carefully damped to prevent a too rapid hardening. If one is unsure of the type of surface, a test of the product is ad-vised.



Topcoat must be mixed with potable water by mechanical means, such as forced action mixers (Cretangle), or slow speed drill paddle mixers for about 5 – 10 minutes. Approximate-ly 5 – 8 liters of water is added per 25 kg of Topcoat, depending on the preferred con-sistency.

Add the majority of the water to the mixer prior to adding the Topcoat, add the remain-ing water during mixing. Never mix more ma-terial than you can use during a 30 minute period. Topcoat is sprayed using suitable equipment. Pumps such as a putsmeister P11 Vario Varm Pump, or a Lancy Pump PH9 are adequate for this type of spay application Spraying / application should take place directly after mixing.



Should take place at temperatures over +5 °C, and never under +2 °C the first 48 hours after application.





The information given within this product description is based NOT ONLY on work carried out in our own laboratories, but also on practical experience obtained during field work. It is offered without guarantee and no patent is assumed.



All equipment and tools should be cleaned once work is completed or during extended breaks.




For health, safety and environmental information, View/download the HSE-document from the downloads tab above.