Frequently Asked Questions

Common issues include leaks around chimneys, skylights, valleys, or hips; missing, cracked, or slipped tiles; deteriorating mortar in ridges/hips/valleys; animal intrusion (squirrels/birds); moss/algae buildup; or damaged flashings. In Ontario’s freeze-thaw climate, small problems escalate quickly to water damage or structural issues. At Alexander Slate, our expert inspections catch these early—contact us for a thorough assessment to protect your luxury home.

Yes—Marley tiles (concrete-based) are no longer produced in Canada, but repairs are fully feasible. We source high-quality reclaimed Marley tiles or exact-match alternatives, ensuring seamless integration in color, profile, and durability. Our master artisans handle replacements without disrupting the roof’s elegance or performance, often extending lifespan by decades.

No—high-pressure washing can erode tiles, dislodge mortar, damage flashings, and force water under tiles, causing leaks. We use only gentle Soft Wash techniques with low-pressure, eco-friendly solutions to safely remove moss, algae, and stains while preserving your premium Marley roof’s integrity.

Costs vary by scope. As Ontario’s #1 rated luxury specialists, Alexander Slate provides transparent, no-hidden-fee quotes after inspection—repairs are often far more cost-effective than full replacement.

 Yes, many repairs (e.g., flashing, tile replacement, leak fixes) are possible in winter with proper safety measures and tarping. Ontario’s cold weather can worsen issues like ice dams, so prompt action prevents interior damage. We prioritize emergency winter repairs for discerning homeowners.

 With our premium methods—reinforced mortar beds, heavy-gauge flashings, custom closures, and precise installations—repairs often last 20–40+ years, matching or exceeding the original roof’s performance. We focus on permanent solutions: done once, done forever.

 Leaks typically stem from cracked/slipped tiles, shrinking/cracked mortar in valleys/hips/ridges, failed flashings at chimneys/skylights/walls, or poor animal-proofing at eaves. Freeze-thaw cycles accelerate these in Ontario. Our comprehensive repairs address root causes, not just symptoms.

 We recommend professional inspections at Bi annually or after major storms, plus 3-5 year gentle Soft Wash cleanings. Early detection prevents costly escalation—trust Alexander Slate, Ontario’s premier tile roof experts, for proactive luxury care.

 Yes—common in Ontario (squirrels, raccoons, birds). We install custom galvanized steel eave closures, seal entry points, and repair any resulting damage (chewed flashings, displaced tiles) while preventing future issues without harming animals.

 As Ontario’s #1 rated luxury roofing specialists, we deliver artisanal, permanent restorations using premium materials and techniques—no shortcuts or callbacks. From Toronto estates to GTA homes, we treat every Marley roof as a masterpiece. Schedule your private consultation today.

 Slate installation is an artisanal craft requiring precision for longevity (100+ years). We start with a solid deck (minimum 3/4" plywood or equivalent), install high-quality underlayment, add a cant strip at the eave for proper angle, and lay slates with exact headlap (typically 3"), staggered joints, and copper nails. No adhesives—only mechanical fastening ensures repairability. In Ontario's harsh winters, we emphasize proper ventilation and ice dam prevention for flawless performance.

 For a typical Toronto/GTA home, expect 2–6 weeks depending on roof size, complexity (hips/valleys), and weather. Preparation (deck inspection, underlayment, flashing) takes time, but our master artisans work efficiently to minimize disruption while delivering a masterpiece that endures generations.

 Absolutely—natural slate excels in freeze-thaw environments when installed correctly. We use thick, premium Canadian or domestic slates, ensure proper headlap/exposure, and install robust flashings/ice barriers to prevent cracks or leaks from ice dams. Our installations withstand Ontario winters with legendary durability.

 Slate requires a minimum 4:12 pitch (some systems allow 3:12 with special underlayment), but we recommend 6:12+ for optimal water shedding and reduced ice dam risk in Ontario. Steeper pitches enhance aesthetics and longevity on luxury estates.

 As Ontario's #1 rated luxury specialists, we source only the finest quarried slate, follow time-tested methods (e.g., proper blending for uniform appearance, no shortcuts), and guarantee permanent, watertight results. Contact us for a private consultation to elevate your property.

 We begin with deck preparation and inspection, install synthetic underlayment or ice/water shield (essential in Ontario), add battens for alignment, lay drip edge/flashing, then install interlocking or barrel clay tiles row-by-row with proper headlap (minimum 3") and fasteners. Valleys, hips, and ridges get custom flashings for seamless elegance.

 Clay tiles are highly durable against freeze-thaw cycles due to their density and low water absorption. We reinforce with premium underlayment, proper ventilation, and ice dam barriers to prevent cracking or shifting—ensuring your luxury roof remains watertight for 50–100+ years.

 Yes, but minimum pitch is typically 3:12–4:12 (with enhanced underlayment). For Ontario homes, we recommend 4:12+ to optimize drainage and reduce ice buildup risk. Our experts assess your roof to recommend the best system.

 Minimal— Bi annual inspections, gentle Soft Wash cleaning (never pressure washing), and prompt debris removal. Clay's natural resistance to moss/algae and fading makes it low-maintenance, preserving timeless beauty with occasional checks from our team.

 We deliver bespoke, high-end installations using premium clay tiles, precise layout, and Ontario-specific adaptations for harsh weather. No callbacks, only enduring sophistication—schedule your consultation today.