Five systems. One standard: the assembly matters more than the shingle.
Atrium's engineered roofing systems are built around how your roof will actually perform — impact class, material behavior, energy performance, or warranty program — not around a one-size-fits-all tier ladder.
Which system fits your house?
Not a price ladder. Not a prestige ladder. Five configurations for five different priorities.
Organizing principle: Class 3 impact baseline
Representative manufacturers: Owens Corning, GAF, Malarkey, TAMKO, or Atlas
Warranty ceiling: Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, Malarkey Certified Pro Warranty, available at Emerald Pro standing, TAMKO MasterShield Enhanced Limited Warranty, available at TAMKO Pro Platinum standing, or Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing
The properly engineered standard without paying for an upgrade.
Organizing principle: Class 4 via backing-layer / mat technology
Representative manufacturers: Owens Corning, GAF, or Malarkey
Warranty ceiling: Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, or Malarkey Certified Pro Warranty, available at Emerald Pro standing
A UL 2218 Class 4 impact rating for insurance or exposure reasons.
Organizing principle: Class 4 via SBS- or polymer-modified rubberized asphalt
Representative manufacturers: Owens Corning, GAF, Malarkey, or Atlas
Warranty ceiling: Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, Malarkey Certified Pro Warranty, available at Emerald Pro standing, or Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing
Class 4 through rubberized-asphalt engineering that resists cracking.
Organizing principle: Class 4 via TAMKO HailGuard hail-specific engineering
Representative manufacturers: TAMKO
Warranty ceiling: TAMKO MasterShield Enhanced Limited Warranty, available at TAMKO Pro Platinum standing
A manufacturer with a hail-specific warranty program.
Organizing principle: Thermal / energy performance
Representative manufacturers: Atlas or standing seam metal
Warranty ceiling: Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing or metal-specific warranty terms
Cutting cooling costs with a reflective roof.
How registration and certification tiers decide what you're actually covered for: roof warranty guide.
Compare the five systems
| System | Impact rating (UL 2218) | Material path | Typical price vs FOUNDATION™ | Warranty ceiling | Best for |
|---|---|---|---|---|---|
| FOUNDATION™ | Class 3 | Impact-resistant architectural shingle | baseline | Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, Malarkey Certified Pro Warranty, available at Emerald Pro standing, TAMKO MasterShield Enhanced Limited Warranty, available at TAMKO Pro Platinum standing, or Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing | Engineered standard on a set budget |
| IMPACTSHIELD™ | Class 4 | Backing-layer or reinforced mat shingle | +$2,000 to $3,000 | Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, or Malarkey Certified Pro Warranty, available at Emerald Pro standing | Insurer or lender Class 4 requirements |
| STORMLOCK™ | Class 4 | SBS- or polymer-modified rubberized asphalt shingle | +$3,000 to $4,500 | Owens Corning Platinum Protection warranty, available only at Platinum Preferred standing, GAF Silver Pledge, Malarkey Certified Pro Warranty, available at Emerald Pro standing, or Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing | Long-term owners facing hail and heat cycling |
| LEGACY™ | Class 4 | TAMKO HailGuard designer shingle | +$5,000 to $10,500 | TAMKO MasterShield Enhanced Limited Warranty, available at TAMKO Pro Platinum standing | A hail-focused warranty program |
| THERMALGUARD™ | Class 3 (cool-roof shingle) or Class 4 (standing seam metal) | Cool-roof shingle or standing seam metal | quoted after inspection | Atlas Signature Select Roofing System Limited Warranty, available at PRO+ Gold Select standing or metal-specific warranty terms | Lower cooling load |
Every system comes in a different set of colors. See the shingle colors for each system.
Pick by priority, not by tier
- Want the properly engineered standard without paying for an upgrade? FOUNDATION™ is the Class 3 baseline.
- Want a UL 2218 Class 4 impact rating for insurance or exposure reasons? IMPACTSHIELD™ is Class 4 through backing-layer or mat construction.
- Want Class 4 through rubberized-asphalt engineering that resists cracking? STORMLOCK™ uses SBS-modified or polymer-modified rubberized asphalt to reach the same rating.
- Want a manufacturer with a hail-specific warranty program? LEGACY™ is built around TAMKO HailGuard and TAMKO Pro Platinum standing.
- Want to cut cooling costs with a reflective roof? THERMALGUARD™ is organized around thermal performance, not impact class.
All five systems share the same underlying assembly standard: enhanced same-manufacturer ridge caps and the same five-layer system described in “The system, not the shingle” on our roof replacement page. Standard ventilation, balanced intake and exhaust sized to code, is included in the replacement price. Enhanced ventilation, such as solar or powered attic fans or added intake beyond the standard design, is quoted separately. The system tier changes; the assembly discipline does not.
Where your system and certification tier qualify, the manufacturer warranty is registered in your name and delivered as part of the Power Package — up to five documents, depending on your roofing system. The warranty ceilings above are explained in full on our brands and certifications page, because the tier a contractor holds with each manufacturer is what decides which warranty you can actually get.
Engineered roofing system FAQs
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