Columbia, MD's Trusted Exterior Home Remodeling Contractor

Alco Products has been helping homeowners in Columbia, MD, and across Howard County upgrade their homes for 70 years. As a third-generation, family-owned exterior remodeling company, we know that inviting someone to work on your home takes real trust, and we don't take that lightly. Whether you're replacing worn siding, upgrading drafty windows, or putting a new roof over your family's head, we bring the same care to your home that we'd want brought to ours. We hold James Hardie Elite Preferred Contractor status and CertainTeed Select ShingleMaster certification, and we back every qualifying project with a limited lifetime labor warranty. 

Exterior Remodeling Services in Columbia

Alco Products is a one-stop shop for exterior home remodeling in Columbia. Count on us for: 

Siding Replacement

Siding replacement is one of our specialties. As a James Hardie Elite Preferred Contractor, we install James Hardie fiber cement siding to the highest standards. We also install CertainTeed vinyl siding for homeowners looking for a low-maintenance option at a different price point. Fiber cement siding is built to last and holds up beautifully over time, while vinyl siding offers great performance in a wide range of colors and profiles.

Replacement Windows

Window replacement is one of our top priorities, and for good reason. Older windows can make your home feel drafty in the winter and stuffy in the summer, and they do a number on your energy bills. We offer energy-efficient replacement window options and oversee everything from precise measurements to the finishing trim. Many Columbia homeowners pair window replacement with siding work to take care of the full exterior in one smooth, coordinated project. 

Entry Doors, Patio Doors, and French Doors

Consider Alco Products your trusted source for exterior door replacement. We carry Marvin entry doors in fiberglass and wood-clad, ProVia entry doors, and Marvin patio doors. French doors are a popular choice for Columbia homeowners who want to create a more open, natural flow between interior living spaces and the outdoors. 

Roof Replacement

We install CertainTeed asphalt shingle roofing systems and hold the CertainTeed Select ShingleMaster certification, which means our roofers meet rigorous standards for product knowledge and installation. We'll help you find the right roofing system for your home's style and your budget. 

Why Columbia Families Have Chosen Alco for Nearly 70 Years

Alco Products was founded in 1956 and is still family-owned and operated, now in its third generation of local leadership. That kind of continuity matters. We're not chasing volume or trying to be the biggest exterior contractor in town. We're protecting a reputation built over decades right here in this community, one project at a time. We hold one of the oldest active home improvement licenses in Maryland and back most projects with a limited lifetime labor warranty.

Our certifications reflect a genuine, ongoing commitment to staying sharp on the products we install. James Hardie Elite Preferred Contractor status, Marvin Certified Installing Retailer standing, CertainTeed Select ShingleMaster certification, and NARI Contractor of the Year recognition all come with real continuing education requirements and installation standards we maintain year after year. Every installation is completed by trained, certified installers, with a dedicated on-site project manager ensuring everything runs smoothly. Read what our customers have to say or take a look at past projects to see for yourself. 

Common Questions from Columbia Homeowners

How do I know what type of siding is best for my Columbia home?

James Hardie fiber cement and CertainTeed vinyl are the two siding options we install, and both are excellent choices depending on your priorities. Fiber cement holds up extremely well over time and offers a broader range of architectural profiles. Vinyl delivers solid performance at a more accessible price point. We provide digital renderings so you can compare how each material will look in your actual home before making any decisions. 

Does Alco Products handle the permits for my project?

Yes, permit coordination is part of our process. We handle the administrative and logistical steps so you don't have to navigate municipal requirements on your own. You'll always know where things stand, but the heavy lifting is on us. 

Can homeowners visit a showroom before committing to a project?

Absolutely. Our North Bethesda showroom at 4921 Wyaconda Road is open for in-person consultations where you can see materials up close, explore product options, and talk with our team. We recommend calling ahead to schedule a time. 

Talk to a Columbia Exterior Home Remodeling Expert

Columbia, MD, homeowners have trusted Alco Products for nearly 70 years because we show up, do what we say we will, and make the process stress-free from start to finish. Whether you're thinking about new siding, replacement windows, a front door refresh, or a full exterior overhaul, we'd love to be the team you call.

Request a free consultation online or give us a call. Don’t forget to check out our current offers and financing options!