GUARANTEED ALUMINUM & VINYL

Guaranteed Aluminum & Vinyl is a Lowell shop that fabricates and installs aluminum and vinyl windows, doors, and screens — the call people make for a single cracked pane as often as a full house of replacements. The company describes itself, in its Better Business Bureau profile, as founded in 1960 and run by owner Richard R. Morin with a staff of four; its website separately says it has 60 years in business. Turnaround speed comes up again and again. In 2022, one reviewer dropped off a broken window pane at 8:15am on a Saturday and had it repaired and cleaned by 10:30am, for the price quoted over the phone. Quick glass and screen turnarounds show up in reviews from 2022 through 2024, and in 2023 one reviewer had 11 windows and a slider replaced — permits handled — in about four hours. On pricing, several reviewers call it fair or better than competitors; a 2023 review put a four-screen and sliding-door-screen job at about half the price of other companies. The owner and staff are described as friendly and knowledgeable across several years of reviews, and a 2023 reviewer said they'd been a customer since 1991. The same speed has come with some rough edges. A 2025 reviewer said staff wrote down the wrong window measurement and then blamed the customer rather than owning the mistake. The most recent review, from August 2026, said a repaired window panel came back dirty with rust still on the bottom of the frame, with no warning about it. A 2022 reviewer said the company turned down an 8-window job by email — citing that it wasn't going to drive out for what it called "2 windows" — despite the customer living 15 miles away. And a 2021 reviewer who'd had 30 windows installed said cracks appeared in the frames of 10 of them about six months later, and that the owner told them they were on their own. Guaranteed Aluminum & Vinyl looks like a strong call for glass, screen, and window-replacement jobs where speed matters — but get measurements confirmed in writing, and ask upfront what happens if something needs a callback after the job is done.