Is a water base masking compound that forms a tough, clear plastic film. Must be sprayed to a thickness of 3mm minimum. Controlled adhesion to plastic, canopies, windshields and windows. The SPRAY LAT is easily removed and gives excellent protection during storage and the construction process. Not to be used for paint masking. Cover with plastic spray, then cover with aluminum foil and tape down with duct tape. Apply by brush or spray. Not Hazardous.