Residential · NW Chicago Suburbs

Natural & Synthetic Slate Roofing

The most architecturally distinguished roofing material available. Installed correctly, it outlasts everything beneath it.

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Why Slate

Quarried from the Earth. Built to Outlast the Building.

Mark has worked in roofing since 2000 and founded Black Square Roofing in 2007. Every project gets direct owner oversight — not a subcontract crew you’ve never met.

75–150 year lifespan

Hard slate verified on North Shore homes since the 1900s. Still weathertight today.

Class 4 impact / Class A fire

The highest ratings available — preferred by insurers on luxury properties.

Architecturally irreplaceable

No synthetic product fully replicates the depth and variation of genuine quarried stone.

Illinois freeze-thaw compatible

Hard slate handles expansion and contraction without cracking when correctly fastened.

Natural or Synthetic?
We Install Both.

The right choice depends on your home’s structure, budget, and aesthetic. We’ll tell you which fits your situation — honestly.

Option 1

Natural Slate

Quarried stone. Each tile is unique. The oldest and most prestigious roofing material still in use — and found on North Shore homes since the 1920s.

Lifespan

75–150+ years

Weight

700–1,000 lbs/sq

Impact Rating

Class 4

Fire Rating

Class A

Structure

May need reinforcement

Best For

Historic & period homes

Option 2

Synthetic Slate

Engineered polymer tile designed to replicate natural slate. CertainTeed Belmont is our primary recommendation — half the weight, Class 4 impact, 50-year warranty.

Lifespan

50+ years

Weight

~200 lbs/sq

Impact Rating

Class 4

Fire Rating

Class A

Structure

Standard framing

Best For

Renovations & upgrades

Performance

Why Slate on North Shore Homes.

Lasts a lifetime — literally

Hard slate installed before 1930 is still on homes in Winnetka, Lake Forest, and Glencoe today.

No ice dam damage

Hard slate doesn’t crack, lift, or absorb water. Illinois freeze-thaw cycles don’t affect it the way they affect asphalt.

Replace it once

A slate roof installed today won’t need replacement in your lifetime. Total cost compares favorably to 3–4 shingle cycles.

Architecturally expected

On North Shore luxury homes, slate signals permanence. Its absence is often noticed by buyers and appraisers.

What We Do
With Slate.

Full replacements, targeted repair, and synthetic upgrades. We work with existing slate roofs as often as we install new ones.

Full Slate Replacement

New natural or synthetic slate installation. We assess structural capacity, specify the correct grade for Illinois winters, and install with a 10-year warranty.

Slate Tile Repair

Individual cracked or slipped tiles replaced without disturbing the surrounding field. Most aging slate roofs need repair, not full replacement.

Copper Flashings

Slate and copper are natural companions. We fabricate all copper flashings and valleys in-house — a precise fit, not off-the-shelf.

Synthetic Slate Upgrade

Converting from asphalt to synthetic slate. Same architectural look at half the weight — no structural reinforcement required.

What Clients Say

Real homeowners. Real completed projects. No paid ratings.

Slate Roofing FAQ

Questions before your estimate.

How long does a slate roof last in Illinois?

Natural slate roofs last 75–150 years when properly installed. Hard slate varieties like Vermont and Welsh perform best in Illinois freeze-thaw conditions. Improper installation — not the material — is the leading cause of premature failure.

What is the difference between natural and synthetic slate?

Natural slate is quarried stone — each tile is unique and has genuine mineral depth. Synthetic slate (CertainTeed Belmont) replicates the look at half the weight and lower cost, with a Class 4 impact rating. Both are excellent; the right choice depends on your budget and home’s structural capacity.

Can my roof support natural slate?

Natural slate weighs 700–1,000 lbs per square. Pre-1960 North Shore homes were often built for slate and can support it. Homes built for asphalt may need structural reinforcement. We assess this during our on-site estimate — before any proposal.

Do you repair existing slate roofs?

Yes. Replacing individual cracked or slipped tiles is one of our most common services on North Shore properties. Most aging slate roofs need targeted repair — not full replacement — and we’ll tell you honestly which applies.

Slate That Lasts
Generations.

Natural or synthetic, full replacement or targeted repair — we’ll give you an honest assessment of what your roof actually needs. Winnetka · Lake Forest · Northbrook · Barrington · Hinsdale.

Phone

(877) 850-5292

mark@blacksquareroofing.com

Address

221 W University Dr
Arlington Heights, IL 60004

Hours

Mon–Fri 8am–5pm