Transparency, Dependability & Experience

Windows, Doors, Siding, Roofing, & Gutters

Family Owned & Operated Since 1956 MHIC #3414

Years In Business

Transform Your Maryland Home. Worry-Free, Guaranteed.

We’re Tension Seal Products, a family-owned company serving Maryland homeowners since 1956. Our stylish, energy-efficient products will boost your home’s beauty and comfort. Imagine – no more drafts, leaks, or fading! Expert installation ensures lasting quality, and our warranties means you’re covered for years to come. With the variety of products that we offer from Windows, Doors, Roofing, Siding, Seamless Gutter & Downspouts to Decks, we help you create the Maryland home you’ve always wanted. Get started with a free estimate today!

Bob

HomeOwner, Columbia, MD

I had windows and gutters installed, they gave me a written estimate within 3 days of request and the install was done in the time frame promised. The price was more than reasonable. The site was always clean and there was little interference from the work. I had a salesman from another company come by for an hour and never gave me an estimate. JP and his father were very easy to work with. Thanks again

Laura

HomeOwner, Westminister, MD

We had a really great experience with this company. Everything went smoothly. Thank you for a stress free install. We are looking forward to some new windows in the Spring!

Helen

HomeOwner, Catonsville, MD

From providing outstanding selection, expertise, and assistance in selecting a custom design for an octagonal window to demonstrating superior craftsmanship, JP and his father offered the finest quality in sales and workmanship

Julia

HomeOwner, Ellicott City, MD

Superior quality. Excellent craftsmanship. Unsurpassed attention to detail. JP and his father worked on the door as if it were their own front door. The value of the materials and work far surpassed the cost. I’m very much looking forward to working with them in the future. What a difference!

Home Improvement Solutions

Your Home, Your Style. Your Vision.

At Tension Seal Products, we believe every home deserves personalized solutions. Let’s tailor your dream windows, doors, and more. Enjoy custom designs, quality materials, and expert guidance – from your free quote to final touches.

Family-Owned Expertise

Craftsmanship You Can Trust, From Our Family to Yours.

Since 1956, we’ve treated every project like it’s for our own home. Our skilled crews respect your space, and dedicated Project Coordinators ensure a smooth journey from start to finish.

Lasting Peace-of-Mind

Worry-Free Beauty That Endures

When you choose Tension Seal Products, you’re investing in decades of comfort and curb appeal. Our durable products stand the test of time, backed by exceptional warranties.

Local Commitment, Lasting Value

The Maryland Difference: We're Your Neighbors

As a Maryland-based, family-owned company, we understand the unique needs of local homes. Our experts help you select the perfect products to combat our weather, enhance your style, and boost your home’s value.

Ready to Transform Your Home? Let's Start Today!

Experience the Tension Seal Products difference. Request your free estimate or schedule a design consultation, and let’s bring your vision to life, one beautiful upgrade at a time.

Built for Efficiency

Cut Energy Costs, Boost Comfort

Our windows, doors, and siding seal out drafts and maximize insulation for year-round savings.

Why We Do It

To Put The Warmth & Security Into Your Home

REASON ONE

To supply and install quality Energy Star products for every need of your home, and give your home the curb appeal it deserves…

REASON TWO

So you can have a stress free experience from the initial estimate to the final installation and inspection…

REASON THREE

Treat your home like it’s our own so you can be 100% satisfied and become a long lasting customer year-after-year…

REASON FOUR

So you can feel confident in recommending your family, friends, and neighbors to a reputable company that has been serving Marylanders like you Since 1956…

Products We Offer

Choose the company that has been serving Marylanders like you Since 1956

01

Windows

Whether your windows are drafty, hard to clean, or not operational, we have the right window for every budget. Our ENERGY STAR rated windows are custom sized to fit your existing window openings and are available in many different style configurations.

02

Doors

We offer all types of doors which include Entry doors (Steel & Fiberglass), Storm doors (Aluminum & Steel), Vinyl sliding patio doors, French style patio doors, and Fiberglass sliding patio doors. All our doors are ENERGY STAR rated and qualify for the Energy tax credit. Available in many different styles, colors, glass, and hardware options. Custom sizes are also available to fit any opening.

03

Siding & Trim

Protect your home from outside elements while adding Energy efficiency. Vinyl siding does not split, peel, or rot and never needs painting. Whether you expect the highest quality and performance or just looking for value, Tension Seal has the siding that will best meet your needs and budget. We carry all major brands of vinyl siding and accessories.

04

Roofing

Your roof is essential for protecting your home and valuables. Don't risk weather damage – new shingles offer superior protection, boost your home's value, and enhance its appearance. We carry all major brands in a variety of colors and styles.

05

Gutters & Downspouts

Protect your home's foundation and prevent costly water damage with a professionally installed gutter and downspout system. Many options available to complement your home's style.

06

Gutter Guards

PLYGEM’s Leaf-Relief gutter guards have proven effective and keep your gutters clean year-round. They are invisible from the ground, protect your home from water damage, and virtually eliminate routine maintenance.