Case Study: 10,000 SF MuleHide 100% Silicone Roof Repair and Recoat — 7363 E Tierra Buena Ln, Scottsdale Airpark
A 10,000 sq ft industrial-flex roof at 7363 E Tierra Buena Ln in the Scottsdale Airpark got a full silicone-over-silicone restoration — MuleHide 115 Cleaner prep with high-pressure wash, every crack and hole repaired with MuleHide 100% Silicone Sealant, every bubble cut open and re-filled, every penetration re-sealed, and a full topcoat of MuleHide 100% Silicone Roof Coating across the entire roof. 10-year no-leak warranty, no tenant closures.
Project Snapshot10,000 sq ft silicone roof repair and MuleHide recoat in the Scottsdale Airpark
7363 E Tierra Buena Ln sits in the heart of the Scottsdale Airpark — the roughly 2,600-acre light-industrial and executive-flex submarket that surrounds Scottsdale Municipal Airport. The building is a two-story, ~14,530 SF I-P Industrial flex property built in 1995, subdivided into several tenant suites: WG Henschen at Suite 100, American Telephone at Suite 140, Suite 110 running around 9,930 SF, and other tenants across the balance. The submarket around it is one of the most desirable industrial addresses in the Valley — medical device, aerospace, telecom, corporate flight departments, defense electronics, and professional services all share the same handful of streets, and vacancies are historically some of the tightest in Maricopa County.
10,000 SF MuleHide Silicone Recoat — 7363 E Tierra Buena, Scottsdale Airpark
| Property | Multi-tenant industrial / flex building in the Scottsdale Airpark submarket |
| Address | 7363 E. Tierra Buena Ln., Scottsdale, AZ 85260 |
| Building type | Two-story light-industrial / flex, ~14,530 SF total, built 1995, I-P Industrial zoning |
| Roof size | 10,000 sq ft flat aged-silicone roof |
| Scope | Clean with MuleHide 115 Cleaner + high-pressure wash, repair all cracks / splits / holes with MuleHide 100% Silicone Sealant, cut and re-fill all bubbles, seal all penetrations with MuleHide Silicone Sealant, full topcoat of MuleHide 100% Silicone Roof Coating, complete debris cleanup |
| Location | North Scottsdale, immediately west of Scottsdale Airpark and Loop 101 — the busiest industrial and executive-flex submarket in the state |
| Warranty | 10-year no-leak (materials + labor) |
| Completion | July 2026 |
The ProjectThe building, the client, and what we were solving for
7363 E Tierra Buena Ln sits in the heart of the Scottsdale Airpark — the roughly 2,600-acre light-industrial and executive-flex submarket that surrounds Scottsdale Municipal Airport. The building is a two-story, ~14,530 SF I-P Industrial flex property built in 1995, subdivided into several tenant suites: WG Henschen at Suite 100, American Telephone at Suite 140, Suite 110 running around 9,930 SF, and other tenants across the balance. The submarket around it is one of the most desirable industrial addresses in the Valley — medical device, aerospace, telecom, corporate flight departments, defense electronics, and professional services all share the same handful of streets, and vacancies are historically some of the tightest in Maricopa County.
The roof is a 10,000 sq ft flat low-slope system that had already been coated in silicone at least once in its history. By the time Vanguard was called in, the existing silicone topcoat had aged — chalking, hairline cracks around a few penetrations, and a handful of small bubbles from thermal cycling under the Scottsdale summer sun. The good news for the owner: an aged silicone roof is one of the highest-value substrates to restore. You don't need a tear-off, you don't need a full re-flash, you don't even need a primer in most cases. You clean it correctly, repair every failure point in the old coating, and then re-apply MuleHide 100% Silicone Roof Coating on top. Done right, that resets the warranty clock for another decade at a fraction of the cost of a re-roof.
The SystemThe system: MuleHide 115 cleaner + MuleHide Silicone Sealant repairs + MuleHide 100% Silicone Roof Coating topcoat
This was a MuleHide-labeled roof system from cleaner to topcoat. That matters for two reasons: MuleHide will only warrant a silicone recoat when their approved cleaner, sealant, and coating are all used together on a MuleHide-warranty-eligible contractor's job; and every step of the chemistry is designed to bond to the step before it. Substituting a generic degreaser for the 115 Cleaner or a hardware-store silicone caulk for the MuleHide 100% Silicone Sealant is exactly how a silicone recoat fails inside three years.
- Clean with MuleHide 115 Cleaner + high-pressure wash — the ready-to-use biodegradable roof cleaner sprayed with a low-pressure sprayer at 1 gallon per 100 sq ft, allowed to dwell 15 minutes, then rinsed at 2,000+ PSI with a power washer until no residue remained on the aged silicone substrate.
- Repair all cracks, splits, and holes with MuleHide 100% Silicone Sealant — high-solids non-shrinking moisture-cure silicone mastic brushed 1/4" thick minimum with feathered edges into every damaged area of the existing silicone field.
- Cut and re-fill every bubble — each thermal-cycling bubble opened, cavity dried, and re-filled with MuleHide Silicone Sealant so it never grows back under the new topcoat.
- Seal all roof penetrations with MuleHide Silicone Sealant — every plumbing vent, HVAC curb, skylight base, and roof projection re-detailed monolithically.
- Full topcoat of MuleHide 100% Silicone Roof Coating — the ASTM D6694-compliant 92% solids single-component silicone applied at spec across the entire 10,000 sq ft roof, cross-hatched application for full coverage.
- Complete debris cleanup and dispose — 5-gallon MuleHide silicone pails, application equipment, wash runoff containment, and all job-related debris removed at end of job.
Our ApproachThe approach: a silicone-over-silicone recoat is the highest-value move an owner can make on this kind of roof
Silicone roof coatings are the fluid-applied system of choice for aged Arizona flat roofs for three reasons: they don't degrade under UV the way acrylics do, they cure via absorption of atmospheric moisture (so they set fast in the humid monsoon-season air), and they can be re-coated over themselves indefinitely with proper prep. This building had already been on a silicone maintenance cycle at some point in its history, which meant the substrate underneath was already the ideal receiver for a fresh MuleHide silicone topcoat — no primer needed on aged silicone if the surface is properly prepped with 115 Cleaner and rinsed.
Vanguard's 6-step scope for the Tierra Buena silicone recoat
- Clean roof with MuleHide 115 Cleaner and high-pressure wash — the entire 10,000 sq ft prepped to a fully-clean silicone substrate ready to accept new coating.
- Repair any cracks, splits and holes in existing roof or coating with MuleHide 100% Silicone Sealant — monolithic silicone-to-silicone bond at every failure point.
- Cut out bubbles in existing roof material and re-fill — every thermal-cycling bubble opened, dried, and re-filled so it can't come back under the topcoat.
- Seal around all roof penetrations with MuleHide Silicone Sealant — every vent, curb, and projection re-detailed with fresh silicone mastic.
- Coat entire roof with MuleHide 100% Silicone Roof Coating — the ASTM D6694-compliant 100% silicone topcoat applied at spec across all 10,000 sq ft.
- Clean up and dispose of all job-related debris — 5-gallon pails, rinse containment, and site cleanup at end of every workday.
The on-roof photography tells the whole story: crew in the middle of the 115 Cleaner power-wash step with the aged silicone substrate visible under the rinse, followed by the staged 5-gallon MuleHide silicone pails ready for application against the McDowell Mountain skyline, then the completed bright-white silicone finish reflecting the Scottsdale evening light back off a perfectly detailed row of HVAC package units. What you're looking at across those photos is the entire silicone-recoat sequence — clean, repair, cut, seal, coat — executed on a working multi-tenant industrial roof in the Scottsdale Airpark.
The DetailThe detail: why MuleHide 100% Silicone is the right product for aged Arizona silicone
MuleHide 100% Silicone Roof Coating is a 92%-solids, single-component silicone that meets or exceeds ASTM D6694, cures through absorption of ambient moisture, has a Class A flame spread rating (ASTM E108), and shows initial solar reflectivity of 89 with a Solar Reflectance Index (SRI) of 113. In plain English: it's one of the most reflective and durable elastomeric coatings available anywhere, it handles ponding water in a way acrylics can't, it doesn't chalk or degrade under UV the way a lower-solids coating does, and it puts a Title-24 / ENERGY STAR-grade cool roof surface on top of a substrate that was previously absorbing summer solar radiation.
For a Scottsdale Airpark tenant with a rooftop full of package HVAC units — which is exactly what 7363 E Tierra Buena Ln looks like from above — that reflectivity translates directly into HVAC load reduction. Every package unit on the roof is sitting on a curb, and that curb is sitting on a roof surface that either absorbs solar radiation and radiates it into the return-air plenum or reflects it away. A fresh MuleHide silicone topcoat drops the roof-deck temperature by 40–60°F on a peak-summer day, which cuts the standby load on every unit up there and extends the life of the compressors. For a building with the kind of high tenant-mix and daytime cooling demand you see across the Airpark, that's real dollars per year, on top of the 10-year warranty coverage.
The Warranty10-year no-leak warranty backed by an Arizona commercial roofer since 1957
The 7363 E Tierra Buena Ln silicone recoat is covered by a 10-year no-leak material and labor warranty. If any covered part of the 10,000 sq ft coated roof surface leaks in the next decade due to coating failure, MuleHide sealant failure at a penetration or crack repair, bubble-repair failure, or workmanship defect — Vanguard returns to make it right at no cost to the owner. Vanguard Roofing AZ is a division of MSW Contracting LLC, a Chandler-based Arizona contractor on Valley roofs since 1957. AZ ROC CR-42 #289663 and R-62 #283025. GAF, Versico, ARMORCOAT, and MuleHide-Warranty-Eligible certified. A+ BBB.
The ResultsThe results — a 10,000 sq ft Airpark roof that resets for another decade of Scottsdale heat
The finished photography tells the whole outcome: a bright-white silicone topcoat across all 10,000 sq ft, sharp coating lines at every parapet edge, silicone-sealed HVAC curbs and skylight bases, clean uniform texture edge-to-edge, and the McDowell Mountains lit up in golden hour behind a working industrial-flex roof that never lost a tenant workday during the recoat. The owner gets a written 10-year no-leak warranty, an ASTM D6694 100%-silicone system, and a Title-24 cool-roof reflective surface that will keep the package HVAC units on this rooftop running cooler through every Scottsdale summer for the next decade.
Photo GalleryProject photos
Drone FlyoverSee the finished roof
FAQCommon questions
What was the scope on the Tierra Buena Ln silicone recoat?
Vanguard repaired and recoated 10,000 sq ft of aged silicone roof at 7363 E Tierra Buena Ln in the Scottsdale Airpark with a full MuleHide 100% Silicone Roof Coating System. The 6-step scope was: clean the entire roof with MuleHide 115 Cleaner and a high-pressure power wash to prep the aged silicone substrate; repair every crack, split, and hole in the existing roof or coating with MuleHide 100% Silicone Sealant; cut open every foam bubble and re-fill it with fresh silicone sealant; seal around every roof penetration with MuleHide 100% Silicone Sealant; apply a full topcoat of MuleHide 100% Silicone Roof Coating (ASTM D6694, 92% solids, SRI 113) across the entire 10,000 sq ft; and complete debris cleanup on site. Backed by a 10-year no-leak material and labor warranty.
Why silicone instead of an acrylic or a foam recoat?
Silicone is the right product for an already-silicone Arizona flat roof, and it's often the right product for aged single-ply or foam roofs too. Three reasons matter for this project: silicone doesn't degrade under UV the way acrylic coatings do (an acrylic recoat over aged silicone would chalk out in 5–7 years); silicone cures through moisture in the air, so it can be applied under a wider range of conditions than acrylics; and silicone is one of the few coatings that can be re-applied over itself indefinitely with a proper 115 Cleaner prep, which means the owner is looking at a maintenance cycle they can extend forever without ever needing a tear-off. MuleHide 100% Silicone Roof Coating is ASTM D6694 compliant, Class A flame-spread rated (ASTM E108), and comes in at 89 initial solar reflectivity with an SRI of 113 — a Title-24 / ENERGY STAR cool roof grade.
Why is the MuleHide 115 Cleaner step so important?
The 115 Cleaner step is the single most important part of a MuleHide-warranted silicone recoat, and it's also the step that gets skipped or done wrong most often on non-warranted jobs. MuleHide's manufacturer specification requires the 115 Cleaner — not a generic degreaser — applied direct to the roof with a low-pressure sprayer at 1 gallon per 100 sq ft, allowed a minimum 15-minute dwell, agitated with a stiff-bristle broom, then rinsed with a minimum 2,000 PSI power washer until no cleaner residue remains. Skip that step or substitute a hardware-store cleaner and MuleHide will not warrant the coating system, and the fresh silicone topcoat will fail to bond to the chalked substrate underneath. Vanguard is MuleHide-Warranty-Eligible and executes this step on every silicone recoat.
Why cut and re-fill every bubble instead of just coating over them?
Any bubble left in the substrate keeps expanding and contracting with thermal cycling and will eventually blister through the new silicone topcoat — sometimes inside the first year in the Arizona sun. The correct move is to open every bubble, dry out the cavity underneath, re-fill it with MuleHide 100% Silicone Sealant to match the surrounding roof plane, and feather the edges smooth before the topcoat goes on. That's what Vanguard did across the Tierra Buena roof. Doing it that way is the difference between a silicone recoat that holds for 10–15 years and one that fails inside the warranty period.
Was the building open during the recoat work?
Yes. 7363 E Tierra Buena Ln is a multi-tenant industrial-flex building — medical device and technology-adjacent tenants across several suites — all of which stayed open for regular business through the entire recoat. Vanguard staged all MuleHide product deliveries, wash containment, and application equipment away from tenant entrances and shipping doors, coordinated with the on-site property contact for any noise-sensitive windows, and swept the surrounding grade clean at the end of every workday. No tenant lost a workday during the project.
What is the cool-roof performance of MuleHide 100% Silicone?
MuleHide 100% Silicone Roof Coating is a Title-24 / ENERGY STAR-grade cool-roof surface. Independent testing to ASTM C1549 puts initial solar reflectivity at 89, initial thermal emissivity (ASTM C1371) at 90, and the calculated Solar Reflectance Index (SRI) at 113. In real-world Arizona-summer terms, that translates to roof-deck surface temperatures 40–60°F lower than an un-coated dark substrate on a 110°F day, which reduces the standby load on every rooftop package HVAC unit and extends the life of compressors and evaporator coils. For a Scottsdale Airpark building like this one with a full row of package units on the roof, that HVAC-load reduction is a measurable operating benefit on top of the 10-year no-leak warranty.