Need more information? Call us! 1.519.453.1000

Western Ontario Sprayed Systems logo
530 Admiral Dr.,
London, ON   N5V 0B2
Phone: 1-866-575-9677
Fax: (519) 453-2739
Email: info@WOSS.ca

Your project deserves quality materials, expert craftsmanship and results – on budget and on time.

  • fireproofing

Fire Protection Systems

Fire-ratings, acoustic comfort and safety are critical to each and every construction project.  They rely on a powerful combination of the right materials and trade expertise.  We are proud to supply the best fireproofing, intumescent coatings, soundproofing materials and insulation in this area.  We also have the expertise and certification to ensure they are applied according to the highest quality assurance.

We offer the industry standard in heating, moisture, cold and fire protection with these systems:

  • Fireproofing:  Choice of thicknesses and densities to meet a range of construction needs and achieve varied specifed fire ratings.
  • Thermal:  Applications for every situation using recycled materials and zero-harm compounds to ensure construction projects meet code without sacrificing health.
  • Sound:  Green, non-combustible, anti-bacterial and mold resistant applications that offer thermal benefits and acoustic control.
  • Intumescent:  Technologically-advanced and extremely durable interior and exterior coatings for passive fire protection without sacrificing aesthetics.

J.A. Macdonald enjoys a long-standing partnership with Cafco Industries as an approved applicator of its products and systems.  All of our sprayed systems are tested and measured for quality assurance.


Welcome to the home of Western Ontario Spray Systems (WOSS). We are the industry solution to heating, moisture, cold and fire protection. At WOSS, we provide the services, skills and materials to ensure that every aspect of your job is done correctly. We offer consistent quality work regardless of time and budget.