Jumbo Building Products is your premier Canadian owned and operated supplier of quality exterior building products to homeowners, contractors and builders. The company has a large, well-stocked warehouse and showroom to display new products and building materials. Jumbo Building Products does not offer installation services, but can provide helpful tips for the DIY project, or refer customers to reputable contractors for installation services. 

Jumbo Building Products is a distributor of windows, doors, siding and seamless eavestrough, supplying the New Construction / Custom Homes and DIY markets at competitive prices. Many other products are available, including vinyl decking, railing and fencing systems, structural aluminum railing and retractable awnings.

Other services include custom bending of aluminum for fascia and window and door cladding as well as screen repairs.    Arrangements can be made to have most products delivered to your home, business or jobsite in Southwestern Ontario.

Experienced advise, along with house lot discounts and free estimates, compliment a professional service available to customers building a new home or addition.

Jumbo Building Products is proud to celebrate over 30 years of quality service and offering the latest technology and advanced product designs to discerning customers.

New for 2015:

  • Versetta Stone Products
  • RBS Celect Siding
  • Novik Stone Siding
  • 5 New stock Kaycan trough colours

      We Feature Top Quality Products By:

  • North Star - Vinyl Windows & Patio Doors
  • Tru Tech Steel & Fibreglas Entrance Doors
  • Gentek Aluminum Storm Doors
  • Kaycan & Gentek Vinyl Siding
  • Al-Mar Vinyl Deck, Rail & Fencing
  • Pro Built Aluminum Railings
  • Rolltec Retractable Awnings
Tru Tech Doors and NorthStar Window and Door Systems are Energy Star Certified

More Info Available Here





Click for the BBB Business Review of this Building Materials in St Thomas ON



We have expanded our window selection – we are now your local supplier of GreenView Windows.
These Vertex 3 High-Performance windows offer exceptional standard features including thermal efficiency that is 29 percent above industry standard
and lifetime coverage on accidental glass breakage
see these new windows on display in our store
Replacement Applications
GreenView windows can be ordered with a flush frame for quick and easy insertion into existing frames. Add internal extension jambs and a number of exterior options that will allow the window to easily fit your existing opening. Customize your replacement window even more with any of our four exterior options.
New Construction Applications
Our new construction windows come with a nailing fin only or a nailing fin and siding return for installation into a new wall. Integral jamb receivers allow for extension jambs to be added or for drywall to be returned into the window for a clean finish.
Tru Tech Fiberglass entrance doors are now available with several wood grain style door slabs that can factory stained. Choose from (8) fresh new colours. We have  samples in our store that show the actual colour of each stain !





New Classic T Vinyl Railing

with black aluminum balusters
  • The style of wrought iron, at a fraction of the cost
  • virtually no mainteneance
  • Available with white, beige or clay vinyl rails