Balsaloc is a water based emulsion that dries to a clear colourless film. It is applied to the airframe with a sponge and allowed to dry, at which point it forms a good heat seal adhesive.
Used as the adhesive to attach Fibafilm, Litespan and Airspan, and also on plywood and other hardwood surfaces to improve the adhesion of iron on coverings.
Apply very thinly with a scrap of foam on to the model framework and allow to dry. Then iron the covering in place. On solid sheet wood surfaces apply a very thin coat to the wood and to the back of the Fibafilm, Litespan or Airspan. Allow both to dry and then iron the covering on to the prepared wood, starting at the centre and working outwards. Make sure the covering is attached everywhere on the surface.