Patio Enclosures by Great Day Improvements
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Serving Greater Washington D.C.

We proudly serve the Greater Washington D.C. Metro area including Northern Virginia and Maryland. Contact our Washington showroom for your next Patio Enclosures project or simply fill out our online form to schedule your free in-home estimate.

  • About Us
  • Products & Services
  • Local Reviews
  • Specials & Financing
  • Local Photo Gallery

Patio Enclosures by Great Day Improvements

7345 Lockport Place
Lorton, VA 22079
License #:DC 420214000016;
VA 2705157137; MHIC #132308

Washington Patio Enclosures Manager

Managed by Alan Kane

Specials & Financing

Sunroom Financing Learn More

Location Details

Patio Enclosures Washington Location

Our Products

Our Sunroom Products Learn More

Contact Information

Local: 703-690-2000 Toll-free: 800-230-8301 Email:

Hours of Operation

  • Monday
  • Tuesday
  • Wednesday
  • Thursday
  • Friday
  • Saturday
  • Sunday
  • 8:30 a.m. - 5 p.m.
  • 8:30 a.m. - 5 p.m.
  • 8:30 a.m. - 5 p.m.
  • 8:30 a.m. - 5 p.m.
  • 8:30 a.m. - 5 p.m.
  • By Appointment
  • By Appointment

Certifications & Associations

  • Qualified Remodeler's Top 500 of 2014 (Ranked 15th)
  • Angie's List
  • NARI
  • Licensed, Bonded, Insured

Payment Options

  • Visa
  • MasterCard
  • Amex
  • Discover
  • Cash
  • Check
  • Financing Available

Greater Washington Location Overview

Our corporate office and manufacturing facility has grown in Macedonia, so we GDI/Patio Enclosures/Stanek Windows has served the Metropolitan Washington DC and Washington areas for over 3 decades with over 15,000 satisfied customers. As a full service remodeler, we understand the comfort our customers have knowing they’re dealing with a business that can give them “Big Company Support”. And at the same time, we are a family business who takes great pride in each individual project no matter how modest or grand so we also understand the comfort our customers have in knowing they get “Small Town Service”.

As building codes and construction techniques have changed over the years, it is more important than ever that you choose someone who will take responsibility for your project through the following steps:

  • Idea
  • Design
  • Permits
  • Manufacturing/Ordering
  • Installation
  • Clean up
  • Service and warranties

Unfortunately in today’s marketplace, people equate “free in-home estimate” with a three-hour “high-pressure sales pitch”. At Great Day Improvements LLC, we do not operate that way. We appreciate every opportunity to meet with homeowners and discuss the projects & dreams they have in mind. We will evaluate your situation, make suggestions and show you how we would approach it. Sometimes this can be done on our initial visit. Sometimes it might take several visits. Whenever you decide you’re ready to move forward, we want to be the ones you choose.

If you’re ready to explore the possibility of building that sunroom you’ve always wanted or upgrading your windows and siding to energy efficient product. If you’re ready for a deck that you don’t have to maintain every year. If you have a deck or a patio but it’s just too hot to use and you want to cover it with a retractable awning. If you’d like something a little more decorative than that cracked concrete slab in your back yard or if you just need additional living space for your growing family, you owe it to yourself to set aside an hour or so and let one of our professionals give you an honest, no-hassle evaluation.

Patio Enclosures

Patio EnclosuresPatio Enclosures custom manufactures every sunroom to meet your style and budget. Let our design consultants work with you to see what's best for your home and lifestyle.


Stanek Windows

Stanek Windows by Great Day ImprovementsIncrease the energy efficiency of your home and reduce energy bills with the highest quality replacement windows and doors.


Backyard Solutions

Backyard Solutions by Great Day ImprovementsImprove your outdoor space. Add shade, beauty and practical solutions that enhance your enjoyment of your backyard.


SoftWall Finishing Systems

SoftWall Finishing Systems by Great Day ImprovementsCreate a beautiful office, home theater, basement living space and more with SoftWall Finishing Systems – the alternative to drywall.


We take pride in each and every sunroom we manufacture and install while offering quality materials and craftsmanship. However, you don't have to take our word for it. Our satisifed customers are more than happy to share the positive experience they've had while working with Patio Enclosures through the years.

Check out some local reviews or leave one of your own on the following websites:

Angie's ListReview us on Angie's List Google +Review us on Google+ Home AdvisorReview us on Home Advisor HouzzReview us on Houzz

"A little skeptical regarding change of work crews between days at first but both were very professional and detailed. Found everyone very attentive to any questions my wife and I had and the work was exceptional. " – Tom V., Spotsylvania, VA | August 27, 2015 * * * * *

"The crew was awesome, very kind and polite and professional. They kept things clean and neat and they really watched out for all of our dogs. I LOVE the new patio enclosure. I would highly recommend this company to others." – Sherry P., Gaithersburg, MD | August 7, 2015 * * * * *

"My husband and I love our new Patio Enclosures sunroom. It allows us to use our outdoor space all year long! This summer was the first one spent in the new room and it was so nice to be able to entertain friends without having to deal with the rain or bugs! This is by far our favorite room in the entire house. Thanks for making our dream a reality." – Lisa and Tom S., Chantilly, VA * * * * *

"Love my new porch enclosure! It's great to be able to enjoy the outdoors while being protected from the elements. Wish I would have done this sooner. Everyone at your company was professional, knowledgeable and courteous. Thank you!" – Brian H., Bethesda, MD * * * * *

Patio Enclosures is dedicated to making our products and services affordable for our customers. As a result, we try to present offers and specials throughout the year, so check back often or follow us on Facebook.

Free Upgrade Offer
0 Interest Payments for 12 Months
Finance Your Project
3.99% APR for 84 Months
Finance Your Project

†Up to $4,000 off all-season sunrooms and solariums. Up to $2,000 off three season sunrooms and screen rooms. Some restrictions apply. See store for details. No adjustment to prior sales. Cannot be combined with other discounts or financing.

*Subject to credit approval. APR 17.99%-26.99% for the life of the loan based on Applicant's credit. All interest is waived if the entire balance is paid within the Interest Promotion Window which begins at the time of First Purchase. The 84 amortized payments with a payment factor range from $22.08 - $24.22 (per $1,000 borrowed) based on the balance after the Interest Promotion Window. Cannot be combined with other discounts or financing.

**Subject to credit approval. Fixed APR during the entire life of the loan. Interest-only payment during promotional period. Principal and interest payments due following the expiration of the promotional period based on the balance at the end of the promotional period. APR and promotional period depends on the plan used. Includes 5 monthly interest only payments with a payment factor ranging from $3.33 -$10.00 (per $1,000 borrowed) and 79 amortized payments based on the balance after the promotion expiration with a payment factor ranging from $14.41-$18.36 (per $1,000 borrowed). Specific payment factor determined by the APR used. Cannot be combined with other discounts or financing.