Siding & Exterior Building Materials Supplier in Newmarket, Ontario
Products
140+
Across 27 categories
Trusted Brands
10
James Hardie, Kaycan, Alu-Rex & more
Quote Turnaround
Same Day
Most requests back same day
Showroom & Warehouse
Newmarket
York Region, GTA & Simcoe County
New: Exterior Studio
Try our siding on your own house.
Upload a photo and tap any part of the house: siding, gables, stone, soffit, fascia, eavestroughs or trim. Real products go on in seconds, at their real size, under your photo's own light. Then send the look to us for a quote.
BeforeAfterAI-generated sample home
James Hardie ColorPlus® Colours
Find your James Hardie colour
All 19 Statement Collection® colours, baked on at the plant. Pick a product, then a colour, and see it on the real texture. Through us, Plank, Panel, Shingle and battens come in all 19, trim in 10 and soffit in 5; Artisan® and Architectural Panel are primed for paint.
2026 Colour of the YearIron Gray
Hardie® Plank Lap Siding · Select Cedarmill®
Previews use James Hardie's own colour values on the real texture and are approximate on screen.
1 · Product
2 · Colour
Rather see it in person? Our Newmarket showroom is at Unit 5, 1235 Journey's End Circle, open Monday to Saturday; ask the counter about samples. Get directions
Product Categories
Everything for the Exterior
From siding and cladding to rainware and building envelope - we carry the full scope of exterior materials for residential and commercial projects.
Vinyl Siding
One of Canada's most popular exterior claddings: durable, low-maintenance, and available in dozens of profiles and colours. From classic lap siding to board-and-batten, we carry vinyl siding from Kaycan, Mitten and CertainTeed, all backed by manufacturer warranties.
17+ products available
Browse Vinyl Siding
Simple Process
How It Works
Getting materials shouldn't be complicated. Here's what working with Exterior Pro Materials looks like.
Browse the Catalogue
Explore 140+ products across 27 categories. Filter by brand, material or type to find exactly what your project calls for, with spec sheets and installation details on the product pages.
Request a Quote
Tell us what you need - product, profile, colour, quantity, and your location. No account needed to get started. Residential, commercial, multi-family - all welcome.
Receive Your Pricing
We respond with accurate, project-ready pricing. Most requests come back the same day. Have questions? Our team is available by phone or email.
Ready when you are - no account required, no minimum order.
Start a QuoteAuthorized Dealer & Distributor
Brands We Carry
Authorized dealer and distributor for James Hardie, Kaycan, Alu-Rex and more: factory-direct pricing, real product support, and no grey-market workarounds.
James Hardie
HZ5 fibre cement, engineered for freeze thaw
Hardie Plank, Panel, Shingle and Artisan siding, Hardie Trim and battens, Hardie Soffit and Hardie Backer. The siding, trim and soffit are HZ5, the formulation James Hardie builds for snow, ice and freeze thaw, in up to 19 ColorPlus colours baked on at the plant.
Kaycan
Engineering the exterior for Canadian climate
Kaycan's catalogue runs deep: vinyl and aluminum siding, vinyl trim, soffit, rainware and vents, plus the CanExel prefinished wood and Versetta Stone lines Kaycan distributes. Our Kaycan range covers residential, commercial and architectural work.
Popular Products
Featured Products
A look at a few popular lines from our catalogue - browse by category or brand to see the full range.
Hardie® Plank Lap Siding
Hardie® Panel Vertical Siding
DaVinci™ Board & Batten
DoublePro® Gutter Guard
Why Contractors Choose Us
We're Built for the Exterior Trade
We're not a box store. We're a specialized exterior materials distributor - better product knowledge, more accurate specs, and pricing that works for contractors.
Contractors are our core customer
Whether you're framing a custom home or cladding a 40-unit complex, we understand exterior material requirements and project timelines.
Request a quoteWide Colour Selection
Hundreds of colour options across the brands we carry, from classic whites to bold architectural tones, including all 19 James Hardie ColorPlus® colours. We can arrange samples before you commit.
Complete Product Specs
Technical datasheets, coverage specs and installation details on the product pages, built from the manufacturers' own documents.
Warranty-Backed Quality
Manufacturer-backed lines from James Hardie, Kaycan, Alu-Rex, CertainTeed and more, many with limited lifetime warranties, giving you and your clients long-term confidence.
Responsive Sales Team
Questions about profiles, regional availability, or bulk pricing? Our team responds by phone or email - not a ticket queue.
Project-Ready Quoting
Submit your project details - we return with accurate pricing
Multiple products, colours, profiles, and locations in one request. Most responses come back the same day with no guesswork.
Project Portfolio
Work We're Proud Of
Real exterior projects completed with materials from our catalogue. Tap the hotspots to explore the products used.
New ConstructionHorizontal Vinyl Siding
View productsEngineered Wood Siding
View productsWindows
View productsModern New Build - Black Board & Batten Exterior
Kaycan DaVinci™ Board & Batten
CommercialStone Veneer & Cladding
View productsSoffit & Fascia
View productsVinyl Siding
View productsCommercial Renovation - Stone Veneer & Vinyl Siding
Stone Veneer Cladding · Vinyl Siding
Where We Ship
Serving York Region, Toronto & Simcoe County
Based in Newmarket, we supply contractors and builders across York Region, the Greater Toronto Area, Simcoe County, and surrounding communities, with deep local inventory and fast turnaround.
Cities & Communities We Serve
- Newmarket
- Aurora
- Vaughan
- Markham
- Richmond Hill
- King City
- Toronto
- Mississauga
- Barrie
- Innisfil
- Orillia
- Bradford
- Alliston
- Cookstown
- Georgina
- Uxbridge
- Whitby & Pickering
- Scarborough
- North York
- Rama & Lagoon City
Good to know
Frequently Asked Questions
Visit us in Newmarket
See the siding, trim and stone samples in person and price your list at the counter. Delivery is quoted with your order.
Unit 5, 1235 Journey's End Cir, Newmarket, ON L3Y 8T7
Mon to Fri 8:00 AM to 5:00 PM · Sat 8:00 AM to 4:00 PM
- Where can I buy James Hardie siding in Newmarket?
- At our showroom and warehouse at Unit 5, 1235 Journey's End Cir, Newmarket. We are an authorized James Hardie dealer and distributor and supply the range that ships to Ontario: Hardie Plank, Panel, Shingle and Artisan siding, Hardie Trim and battens, Hardie Soffit and Hardie Backer. The siding comes in 19 ColorPlus colours, the trim in 10 and the soffit in 5; our James Hardie colours guide shows which ones match.
- What exterior building materials does Pro Materials supply?
- Siding and the materials around it: vinyl siding, fibre cement, engineered wood, cedar shake, stone veneer, metal and aluminum siding, soffit and fascia, eavestroughs and gutter guards, exterior trim, house wrap and insulation, windows, railings, roof vents and cement backer board.
- Which brands do you carry?
- We are an authorized dealer and distributor for James Hardie, Kaycan, Alu-Rex, CertainTeed, GenStone, Foundry, Novik and MAC Metal Architectural. We also carry Mitten and our own Pro Materials line. See all brands.
- Do you deliver?
- Yes. We supply contractors, builders and renovators across York Region, the Greater Toronto Area and Simcoe County, and delivery is quoted with your order. See our service areas.
- How do I get a price?
- Send a quote request with the products, colours, quantities and your location, or call +1 (905) 836-7272. Most requests come back the same day.
- What are your hours?
- The counter is open Monday to Friday, 8:00 AM to 5:00 PM, and Saturday, 8:00 AM to 4:00 PM.
Ready to price your
next project?
Tell us what you're working with - the products, quantities, colours, and your location. We'll come back with accurate pricing, usually the same day.
- Multiple products in one request
- Colour and profile specifications accepted
- Residential, commercial, and multi-family
- Contractor accounts available