Class IV impact-resistant shingles for commercial and institutional roofs.
UL 2218 Class 4 systems that stand up to Montgomery County hail — and give your carrier a documented reason to lower the premium.
Not every commercial building is flat. Garden-style apartments, senior living campuses, churches, schools, hotels and low-rise offices all carry steep-slope shingle roofs, and in this hail belt those roofs are the single largest recurring claim line on the property policy. A Class 4 system changes that math in both directions: fewer claims, and a premium credit that compounds for the life of the roof. Call (281) 948-2208 or schedule an assessment.
P91 Zero-Leak GuaranteeWhat we deliver
- UL 2218 Class 4 rated systems — the highest impact classification
- Malarkey Vista AR, GAF Timberline AS II, Owens Corning Duration FLEX, CertainTeed NorthGate ClimateFlex, Atlas StormMaster Shake
- Manufacturer Class 4 certificate and photo documentation supplied for your carrier
- Full tear-off, deck inspection, synthetic underlayment, new flashing and boots
- Low-slope transitions detailed with the correct membrane, not shingled over
- Phased scheduling on occupied buildings — no section left open overnight
- Proven at scale: 40,000+ sq ft on an occupied 108-bed care facility
- 5-year P91 workmanship warranty plus the manufacturer system warranty
Why Class 4 pays on a commercial asset
On a single home the Class 4 upgrade is a nice-to-have. On a 40,000 square foot institutional roof it is a financial decision: the premium credit applies every year, the deductible you avoid on a marginal hail event is five or six figures, and the disruption you avoid on an occupied building does not show up on any invoice at all. We price the Class 4 option next to the standard system so ownership can see both numbers before committing.
Getting the carrier credit actually applied
Underwriters do not take a contractor's word for it. We supply the manufacturer's Class 4 certificate naming the exact product installed, dated installation photos, and the final invoice — the package your agent submits to have the wind and hail credit applied. The credit amount is set by your carrier and policy, not by us, so confirm the figure with your agent before you make the upgrade decision.
The products we specify
Malarkey Vista AR uses NEX rubberized asphalt, which stays flexible and absorbs impact rather than fracturing — it is what we installed on the Conroe care facility. GAF Timberline AS II, Owens Corning Duration FLEX, CertainTeed NorthGate ClimateFlex and Atlas StormMaster Shake are the other Class 4 systems we install regularly. Selection comes down to budget, color availability across a large field, and which manufacturer warranty ownership wants behind the asset.
Where shingles end and membrane begins
Most institutional buildings are mixed assemblies — a pitched shingle field with a low-slope section over an entry canopy, a mechanical well, or a rear addition. Class 4 shingles belong only on the pitched portion. The flat sections get TPO, PVC or modified bitumen, and the transition between them gets detailed properly. That junction is where the majority of the leaks we are called out to diagnose actually originate.
Installing over an occupied facility
We replaced roughly 40,000 square feet of Class IV shingle on an occupied 108-bed skilled nursing center in Conroe, between spring storms, without disrupting residents. The case study shows the phasing and the photos. The same approach applies to multi-family portfolios and senior living campuses.
FAQ
What does UL 2218 Class 4 actually mean?+
UL 2218 drops a two-inch steel ball onto the shingle twice in the same spot from twenty feet. A Class 4 rating means the mat did not crack or split — the highest of the four impact classes. It is a laboratory rating, not a guarantee against every hailstone, but it is the benchmark carriers recognize.
How much can a Class 4 roof reduce commercial insurance premiums?+
Most Texas carriers apply a wind and hail premium credit for a documented Class 4 roof, and on a large facility that credit compounds every year of the roof's life. The exact figure is set by your carrier and policy — we provide the manufacturer certificate and installation documentation your agent needs to apply it.
Which Class 4 shingles do you install?+
Malarkey Vista AR, GAF Timberline AS II, Owens Corning Duration FLEX, CertainTeed NorthGate ClimateFlex, and Atlas StormMaster Shake. All carry the UL 2218 Class 4 rating; we specify by budget, color availability and the manufacturer warranty the owner wants.
Does Class 4 apply to a flat or low-slope building?+
No — shingles need pitch. Class 4 is for the steep-slope portions of commercial and institutional buildings: garden-style apartments, senior living, churches, schools, offices and hotels. For low-slope sections we specify TPO, PVC or modified bitumen instead, and detail the transition between the two.
Can you install over an occupied building?+
Yes. We phase the work so each section is torn off and dried in the same day, keep entrances and transport lanes clear, and schedule loud phases around your operating hours.
What documentation do we get for the carrier?+
The manufacturer's Class 4 certificate identifying the exact product installed, dated photo documentation of the installation, and the final invoice — the package agents and underwriters ask for when applying the credit.
Planning a commercial roof project?
Assessment, condition report, and a phased budget you can take to ownership. Fully insured crews, 5-year workmanship warranty.