Frisco has office, retail, medical and flex buildings with big low-slope roofs, plus plenty of rooftop HVAC. When those roofs come up for replacement, Johns Manville (JM) is one of the manufacturers owners and property managers ask about. JM has been around for 168 years and makes nearly every part of a commercial roof system.
I’m Blake Snow. I’ve been in roofing for 30 years, and we’re certified with Johns Manville. This post covers what JM publishes about its TPO and PVC systems and its Peak Advantage guarantee, in plain language, so you can compare bids on more than price.
What JM makes for low-slope roofs
According to JM’s commercial roofing page, JM offers:
- Single-ply: TPO, PVC and EPDM
- Bituminous (multi-ply): APP and SBS modified bitumen, plus built-up roofing (BUR)
- Insulation and boards: polyiso insulation and polyiso and other cover boards
That range is why JM can guarantee a full system (membrane, insulation and cover board) instead of just the sheet, as long as the spec qualifies.
JM TPO 60 mil: the published numbers
From JM’s TPO 60 mil data sheet:
| Item | JM’s published value |
|---|---|
| Standard | Meets or exceeds ASTM D6878 |
| Solar reflectance (white), CRRC | 0.77 initial / 0.70 after 3 years |
| Thermal emittance | 0.87 initial / 0.86 after 3 years |
| SRI (white) | 95 initial / 85 after 3 years |
| Peak Advantage guarantee terms | 5, 10, 15 or 20 years |
JM’s TPO and PVC guarantee requirement sheets show terms that reach 30 years for qualifying membranes and specs. Thicker membranes and better-attached systems usually qualify for longer terms. A 20-year roof and a 10-year roof might both say “TPO” on a bid, so ask what earns the term.
TPO or PVC? Both are heat-welded single-ply sheets. PVC is often picked for roofs exposed to grease or chemical exhaust, such as restaurants. TPO is the common choice for offices and retail. Our TPO vs. modified vs. coating guide walks through the trade-offs.
How a Peak Advantage guarantee actually works
From JM’s guarantee requirements and its owner’s guide:
- It’s NDL. JM says all of its single-ply guarantees are No Dollar Limit.
- It starts before the job does. The guarantee has to be applied for at least 14 days before work starts.
- JM inspects the finished roof. JM inspects only roofs that are registered for a guarantee, and the NDL guarantee has to be issued within 6 months of substantial completion.
- What’s covered: JM pays for repairs to stop leaks caused by natural deterioration of the guaranteed materials or poor workmanship installing them. That includes splits, fishmouths, ridges, buckles, wrinkles, membrane slippage, and damage from local wind gusts of 55 mph or less.
- Your side of the deal: notify JM in writing about leaks and any planned roof changes, and keep the roof maintained.
What’s not covered (read this before you sign)
JM’s owner guide lists exclusions, including:
- Natural events: hail, windstorm, flood, lightning, tornado and similar events
- Foot traffic, stored material and other physical abuse
- New penetrations or equipment added later unless done in a way JM accepts by an approved contractor
- Leaks through walls, copings and penetrations, and non-JM metal
- Ponding water, except on TPO and PVC with JM’s prior approval
- Condensation, and older materials left in place under a re-cover
Hail riders: JM’s PVC requirements sheet lists optional hail riders for 1”, 1.5” and 2” hail, plus higher wind-speed riders, at added cost. On guarantees with wind riders of 100 mph or more, JM requires a JM pre-manufactured metal edge system rated for that wind speed. If hail coverage matters to you or your lender, ask for the rider in writing. Otherwise, plan on hail being an insurance claim, not a warranty claim.
Selling the building? Transfers
JM’s owner guide says to submit a transfer request on JM’s website and pay the fee within 90 days. JM may inspect first. If it finds issues the guarantee doesn’t cover, the owner has 60 days to acknowledge them or the request is treated as withdrawn. Buyers and lenders often ask for this, so keep the guarantee file with your building records.
What we do differently on a Frisco commercial bid
- We list the membrane, thickness, attachment method, insulation and cover board, so you can see what earns the guarantee term.
- We offer both 10-year and 20-year NDL warranty options on commercial roofs, at different prices, and spell out which manufacturer and spec each one uses.
- We flag rooftop HVAC traffic paths, curbs and drains, since foot traffic and ponding are common exclusions.
- We tell you upfront whether hail or higher wind riders are available for your spec.
See our Frisco commercial roofing, TPO and PVC pages for more.
After a storm
Get the roof inspected and documented before anyone patches it, and keep tenants and vendors off damaged areas. Our commercial hail claims page covers what to record. In Texas you generally have one year from the date of loss to file a claim, but check your policy.
Talk to us about a JM roof in Frisco
We install Johns Manville TPO, PVC and modified bitumen systems on commercial buildings across Frisco, Prosper, Plano and Southlake. We’re certified with GAF, CertainTeed, Owens Corning, Atlas, Johns Manville, Carlisle, Tropical, Mule-Hide and Enviroshake, and we’re A+ rated with the BBB. Request a free inspection or call (817) 733-9228.
