Modern Flat Roofing, Managed End-to-End
Drainage, Weld Integrity, and Insulation Tuned for Midwest Weather.
A roof is called low-slope when its pitch is 3 in 12 or less. Water moves slowly across such decks, so standard shingles that rely on gravity cannot keep up. Instead, builders rely on membranes or multi-ply assemblies that fuse into a single watertight skin.
Four primary systems dominate today. Single-ply membranes (TPO, PVC, EPDM) arrive in wide rolls and heat-weld or adhesive-bond into one sheet. Modified bitumen layers torch-sealed asphalt rolls for extra foot-traffic muscle. Built-up roofing stacks hot-mopped asphalt and felt, then shields the surface with gravel ballast. Structural standing-seam metal uses tall ribs and concealed clips to channel water even on gentle slopes such as ½ in 12.
Low-slope solutions are common on commercial plazas and industrial plants, but the same waterproof science now tops modern residential designs, rooftop decks, detached garages, and additions framed with limited pitch. Properly installed, a low-slope roof delivers 20 to 30 years of service, passes Class A fire tests, and fits solar arrays, HVAC curbs, or living-roof trays with ease.
Our Low Slope Flat Roofing Process
Flat Roofs Built to Drain and Last.
Design & Code Check
Plans reviewed against Illinois energy, wind, and fire requirements.
Deck & Drain Scan
Slope mapping to plan insulation layout.
Material Staging
Tapered ISO, membrane rolls, and edge metal delivered zone by zone.
Insulation & Vapor Layer
Boards fastened, seams staggered, vapor sheet installed where code requires.
Membrane Welding
Sheets laid with laser guides, seams heat-welded and probe-tested hourly.
QA & Warranty Issue
Manufacturer inspector signs off, Cittrix provides lifetime labor certificate.
Low Slope Flat Roofing Advantages
Is Flat Roofing Right?
The Cittrix Difference
- Fast, Convenient Estimates
Call or submit a form and we’ll schedule a free inspection of your roof for the same or next business day. There’s no need for you to disrupt your busy schedule - you don’t even have to be at home.
Instead of sending a confusing estimate or sitting in your living room for hours with a high-pressure sales pitch, we’ll send you a clear video explanation of what’s going on with your roof and our recommendations that you can watch on your own time.
- Quick Turnaround and Guaranteed Timelines
Roof installation is scheduled and completed within ten days of approval—no delays, no surprises, just reliable scheduling you can count on.
- Flexible Financing Options
We offer simple, clear-cut payment options, including 0% financing with zero money down, making it easy to get the high-quality roof your family needs.
- Trusted Team of Professionals
We’re proud to work closely with leading manufacturers, ensuring every roof we install is the highest quality. Our crews are experienced, respectful, and held to the highest standards in the industry—because your home deserves the best.
- Malarkey Emerald Premium Certified Contractor
- Proud Member of the Roofing and Solar Reform Alliance
- A+ rating with the Better Business Bureau
- HAAG Certified Roof Inspector
- 5-Star Google Rating
- 5-Star Thumbtack Professional
- Lifetime Roof Warranties
We stand behind our work with robust warranties that cover labor and materials, offering long-term protection and peace of mind.
- Speedy Cleanup and Safety Precautions
Our teams take extra care to minimize disruption and keep your family and pets safe during every step of the process.
- Locally Owned, Family-Run Business
Based in Buffalo Grove, Illinois, and serving neighbors throughout Lake County and the Chicago suburbs, we’re proud to serve our local community with integrity, hustle, transparency, and heart.
We’ll do everything in our power to ensure you’re informed and confident through every step of the process and will always make recommendations based on what’s best for you. We’re humbled by the positive feedback we’ve received from thousands of happy customers and look forward to serving you and your family.
Trusted By Over 10,000+ Satisfied Customers
Pick Your Low Slope Flat Roofing System
Roof System Options & Installation Essentials.
Cittrix pull-tests every deck, models wind uplift, and presents at least two code-compliant assemblies so owners balance weight, reflectivity, and budget with clear data.
- Single-Ply TPO / PVC Membranes
Bright, heat-welded sheets ideal for energy credits.
Install notes: Fully adhered or mechanically attached over high-density cover board; seams probed and logged for warranty. - EPDM Rubber Membrane
Flexible black or white sheet that excels in freeze–thaw climates.
Install notes: Fully adhered with bonding adhesive; seams taped; ballast optional for wind zones. - SBS / APP Modified Bitumen
Torch-bonded or peel-and-stick rolls that handle daily foot traffic.
Install notes: Two-ply base plus granule cap; bleed-out inspected; prefabricated flashings at curbs. - Cold-Process Built-Up Roofing (BUR)
Multi-ply asphalt and felt topped with gravel for maximum redundancy.
Install notes: Solvent adhesive between plies for low odor; river-washed stone spread at 27kgm². - Standing-Seam Structural Metal
Concealed-clip ribs channel water on slopes as low as ½ in 12.
Install notes: Continuous panels roll-formed on site; clips fastened to deck; ribs seamed to 180 degrees for coastal wind zones.
Request More Information
Fill Out the Form and One of Our Local Roofing Experts Will Contact You Right Away.
