See the Fortress Difference.
Quality Glass and Windows with 10-Year Peace of Mind.
Tired of Glass and Window Companies That Lock You Into One Expensive Option?
You've been there before. Window contractors who show up with a single supplier catalogue, pressure you into "today only" deals, or disappear after installation when problems arise. Or maybe you've dealt with the frustration of drafty windows, sky-high energy bills, and being told you need to replace everything at once - even when your budget says otherwise.
Here's what Southern Alberta homeowners really need:
Real choices, not just one supplier's products
Clear pricing with options that fit your actual budget
Energy-efficient solutions that actually save money long-term
Respectful crews who treat your property like their own
That's Exactly What Fortress Roofing, Exteriors & Glass Delivers
Our Simple 3 Step Process
Step 1
Free Consultation & Honest Assessment
We start with a thorough evaluation of your current windows, identifying energy loss, damage, and opportunities for improvement. No high-pressure sales tactics - just honest recommendations from Southern Alberta's only exteriors company with a dedicated, in-house windows and glass team.
Step 2
Transparent Quote & Clear Timeline
You'll receive detailed options from multiple suppliers, not just one. Whether you're upgrading for energy savings, curb appeal, or property value, we'll show you exactly what fits your budget and goals. If you're a property manager, we'll provide bulk pricing and efficiency projections for your rental or multi-family properties. If you're dealing with insurance, we'll help you understand exactly what's covered and work with you to bridge any gaps.
Step 3
Professional Installation & Complete Follow-Up
Our skilled, in-house crews (never subcontractors) arrive on time, work efficiently, and treat your property with respect. We handle everything from permits to cleanup, keeping you informed throughout the process. After completion, we conduct a final walkthrough to ensure you're 100% satisfied.
Choice & Flexibility You Won't Find Elsewhere
You're not locked into one supplier's limited options. We source from multiple manufacturers, giving you the best fit for your style, performance needs, and budget. From basic replacements to high-end custom glass solutions, we have options that actually work for real Southern Alberta homeowners.
Energy Savings That Actually Matter
With 24 years of experience in Southern Alberta, we know which window solutions deliver real energy savings in our climate. Our energy-efficient upgrades don't just look good on paper - they cut your heating bills and boost comfort year-round. Property managers see fewer tenant complaints and lower utility costs across their portfolios.
Peace of Mind That Lasts
From initial consultation to years after installation, we're your long-term windows partner. Our 10-year "no excuses" workmanship guarantee isn't just a promise - it's proof that we stand behind every installation.
About Fortress Glass
Since 2001, Fortress Roofing, Exteriors & Glass has been Southern Alberta's premier exteriors contractor, and we're the only company in the city with a dedicated, in-house windows and glass team. We serve homeowners, landlords, and property managers throughout Calgary, Airdrie, Lethbridge, Cochrane, Okotoks, and surrounding communities. We specialize in:
Residential Window Replacement & Installation
Energy-Efficient Window Upgrades
Multi-Family & Commercial Glass Solutions
Custom Glass Applications
Storm Damage Window Repairs
Skylight Installation & Replacement
Our mission is simple: treat every window installation like it's our own home. With best-in-class certifications, an A+ Better Business Bureau rating, and a track record of community impact, we're more than just contractors - we're your neighbors, committed to keeping Southern Alberta homes comfortable and energy-efficient.
What sets Fortress Glass apart:
24 years of Southern Alberta exteriors experience
Only company with dedicated, in-house windows team
Multiple supplier relationships = more choices for you
10-year "no excuses" workmanship guarantee
A+ BBB rating and best-in-class certifications
Don't Let Energy Bills Keep Rising
Ready to Upgrade Your Glass or WIndows?
Southern Alberta winters are tough on old windows, and energy costs aren't getting any cheaper. Whether you're dealing with drafty windows, planning energy-efficient upgrades, or managing multiple properties, Fortress Windows & Glass is here to help.
Get your free, no-obligation consultation today and discover why Southern Alberta homeowners and property managers have trusted us for over two decades.
Free consultation with honest assessment
Multiple supplier options to fit any budget
10-year workmanship guarantee
A+ BBB rating and 24 years of experience
In-house installation team (never subcontractors)
Frequently Asked Questions
How long does a typical window replacement take?
Most residential window installations take 30 minutes to 1 hour per window for standard replacements. A whole house typically takes 1-2 days, depending on the number of windows and any customizations required. We'll provide a specific timeline during your free consultation and keep you updated throughout the project.
What if I can't afford to replace all my windows at once?
Unlike companies that push expensive whole-house packages, we work with your actual budget. We can prioritize the most important windows first (like those facing harsh weather or in main living areas) and create a phased replacement plan. Our multiple supplier relationships mean we have options at every price point.
What's included in your 10-year workmanship guarantee?
Our guarantee covers all installation-related issues for a full 10 years. If any problems arise due to our workmanship, we'll return and fix them at no cost to you. This is in addition to manufacturer warranties on materials. Because we use our own in-house team (never subcontractors), you can count on us being here to honour that guarantee.
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