Foster 30-45N a grey vapour barrier sealant designed for use with rigid thermal insulation

Foster 30-45N Foamseal Sealant is a grey vapour barrier sealant designed for use with rigid thermal insulation including polystyrene foam. It remains flexible and tough in joints and will not shrink or crack during repeated cycles of high and low temperatures.

Foster 30-45N Foamseal Sealant seals the joints of cellular glass and other insulations against the entrance of moisture. When used as a bedding compound on iron or steel surfaces and as a joint sealant, Foster 30-45N Foamseal Sealant provides additional protection to the blocks of insulation. Damage to the insulation due to migration of moisture is minimized.

The product is water and weather resistant and is often used as a sealant and flashing compound where structural parts must penetrate an insulation surface. It is also suggested for use to seal seams in metal jacketing.

  • Polystyrene
  • Aluminium
  • Fibreglass
  • Steel
  • Galvanized Iron

* Store between 4°C and 38°C

* Apply between 10°C and 43°C

* Allow to cure one week before placing in heated service.

*At temperatures above 93°C the sealant may harden and become discoloured while maintaining its seal.

*Not suggested for use under sovent base elastomeric mastics and coatings, if minor surface discolouration and /or dirt pick-up would be objectionable. Discolouration can be minimized by allowing 24-48 hours cure time before top coating.

*Make certain this product is completely dry and the area free from product odour if food is involved.