Meet the Team - Juniper Windows West Covina

Meet the West Covina Team Behind Juniper Windows West Covina

We’re the crew that shows up in uniform, introduces ourselves by name, and treats your house like the place we have to answer for later. Every window and door we install in West Covina carries our names on the workmanship, which is exactly why we don’t rush. Our team lives in and around the San Gabriel Valley, works on ladders in the same summer heat you feel, and answers for every job under the 365-Day Done Right Promise. Sean Mackey, Owner, put this team together the old way: hire people who’d be comfortable working on their own mother’s house. Most of us have been doing this long enough to remember when vinyl replacement windows were a novelty. We learned the trade when it was harder, before the tools got smarter.

Call (350) 305-4609

Our People

Sean Mackey, Owner

Sean started installing windows in 2001, when impact-rated glass was still something you had to special order and explain to people in West Covina. He’s the one who answers the phone after hours, walks every finished job, and writes the quotes himself because he believes a written price is the only kind that means anything. Sean’s pet issue is solar heat gain. He’ll tell you exactly what a low-E coating does and follow it up with something like “which is a fancy way of saying your living room stops feeling like a solar oven in July.” Before window work, he framed houses. He still carries a framing square in the truck, mostly out of habit.

Luis R., Lead Technician

Luis has been setting windows and doors in the San Gabriel Valley for 17 years, and he’s the guy we send when the opening isn’t square, the rough sill is rotted, or the homeowner wants to know why the old window leaked. He’s certified in impact-rated window installation and has hung more Therma-Tru door slabs than he cares to count. Luis keeps a notebook in his tool bag with measurements and shim counts from every job. Ask him about a house on Woodgate Drive he did three years ago, and he’ll flip to the page. He’s also the crew’s unofficial lunch scout. His rule: if the salsa isn’t made that morning, keep driving.

Dana K., Senior Installer

Dana came up doing trim carpentry before moving to windows and doors, which is why her finished interiors look like the opening was always that size. She specializes in retrofit installations where the old stucco returns have to stay intact, a common situation in the older neighborhoods south of the 10 freeway. Dana handles the ViewLux and ES Windows lines most often because she likes the tighter tolerances on the frames. She has a reputation on the crew for being the one who makes rookies re-caulk a bead if it’s even slightly uneven. Outside of work, she restores mid-century furniture. Her glazing putty skills transfer over more than you’d expect.

Marcus T., Service Coordinator

Marcus is the voice on the phone when you call to schedule an estimate or ask why your sliding door sticks in the winter. He’s been with Juniper for six years and started as a runner picking up sealed glass units from our suppliers in the Inland Empire. Marcus runs the Relay Standard on every booking: live arrival time so you’re not sitting around wondering, before-and-after photos of the job, a written price before anything starts, and a digital invoice when it’s done. He’s got a dry sense of humor that comes through on the phone. If you ask whether the crew can make it by 8 a.m., he’ll tell you the truth, which is that traffic on the 10 is a coin flip before 9.

One Standard, Every Job

Across every Juniper location in California, the standard doesn’t bend by zip code. The crew in West Covina works under the same written rules as every other team: a written price before work begins, no surprises on the invoice, and the 365-Day Done Right Promise covering parts and labor in writing for a full year. If a window fails, a door binds, or a seal fogs inside that window, we come back. No charge for the second visit. No argument. That applies to every installation we hand off, whether it’s a PGT impact window on a canyon-facing wall or an ECO Window Systems slider in a 1970s ranch. Luis, Dana, Sean, and Marcus all sign off on the same follow-up: if it’s not right, Juniper makes it right.

Call (350) 305-4609 to schedule your free estimate. We’ll send a real person, with a written price, and we’ll stand behind it for a year.

Written by Sean Mackey, Owner at Juniper Windows West Covina, serving West Covina since 2001.