Mon - Sat 8:00AM - 7:00PM

Sunday 9:00AM - 4:00PM

Niagara Trusted Siding

Windows and Exteriors

Our promise as a contractor is to build community

value into every project while delivering

professional expertise.

Siding Soffit Fascia and Eavestrough

We can update or repair your siding, soffit, fascia and eavestrough. Which in turn can dramatically change the look of your home for years to come. We offer a variety of styles and colours to choose from. Sleeth Exteriors has been installing Sliding in St. Catharines for many years over 10 years now. St. Catharines Siding Companies are a dime a dozen but, here at Sleeth Exteriors we want you to be happy with the end result.

Roofing Installation

We offer a top quality Roofing Installation process and clean up. There are many different types of shingles on the market. We use GAF products because we find it to be the best on the market. Durability ranges from twenty years to a lifetime. Sleeth Exteriors is a St. Catharines Roofing Company that makes sure the roof over your family and your heads is protected from the elements.

Windows and Doors

Sleeth Exteriors install a wide range of window styles that offer different benefits to suit your unique needs. In St. Catharines Windows and Doors are a huge factor, due to the high winds we get from Lake Ontario. We offer professional installation, affordable and quality doors and workmanship every time. Windows and Doors are a great investment in your family's home. To save on heating and cooling costs, also including a fresh look for your home.

DEL Windows & Doors is Canadian owned and operated with over 100 years of combined industry experience in PVC window and insulated steel door manufacturing. We service quality dealers, architects, lumberyards, and wholesalers throughout Ontario with innovative quality window products for home and office. We are dedicated to innovation and design, quality manufacturing and we are committed to providing excellent customer care by exceeding the needs and expectations of our customers. We pride ourselves in our relationships with our employees, customers and suppliers, and strive to build long-term partnerships.

Royal Building Products is a leading manufacturer and distributor of a broad range of state-of-the-art exterior building materials for the home remodeling, building and municipal construction markets. For over 40 years, we’ve committed ourselves to quality, innovation and customer relationships.

It’s how we’ve built loyalty and trust among a growing number of building professionals, homeowners, architects, engineers and distributors.

Siding Fort Erie Before and After

Sleeth Exterior's Approach

Canada’s climate and harsh elements, you the customer needs your Windows and Doors to be installed correctly the first time. A bad design, inadequate roofing ventilation and lack of proper insulation can disrupt the function of your home causing roofing and waterproofing products to break down prematurely.

Your Roof is the first line of defence against the elements and with Wind Storms that are getting stronger and stronger. Sleeth Siding, Windows and Exteriors strive to make sure Niagara’s families Roof installations are completed correctly.

Our mission is to identify these imperfections, educate the homeowner with a proper solution and provide a written estimate for any new Windows, Doors, Siding, Soffit and Roofing installation.

Niagara Region Is Our Work Place

IContact Our Sales Team today to get a FREE Quote on Siding, Roofing, Windows, Decks, Door Installation, and so much more.


Service Area: St Catharines, Thorold,

Welland, Niagara Falls, Fonthill,





  • Roofing Hamilton
  • Windows and Doors Stoney Creek
  • Siding Grimsby
  • Roofing Beamsville
  • Windows and Doors Wainfleet
  • Roofing Repair Lincoln
  • Roofing Pelham
  • Siding St. Catharines
  • Windows and doors Welland
  • Roofing Fort Erie
  • Windows and doors Port Colborne
  • Roofing Thorold
  • Siding Niagara Falls
  • Windows and doors Niagara-on-the-Lake
  • Roofing Ridgeway
  • Siding Virgil

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