WHY DO BRAND NEW REPLACEMENT WINDOWS/DOORS LEAK?

Share this post

At some point, homeowners frustrated by drafty doors or fogged double-pane windows will decide it’s time to bite the bullet and plan a replacement project.

19362071 - selection of doors and windows with a white background

And updating doors and windows can do more than stop wintry winds from sneaking into the home and expensive heat from slipping out. Today’s doors and windows are likely to be more energy-efficient, easier to use and more stylish, too. Materials used in these products have come a long way in the past couple of decades and offer a host of looks that weren’t possible when many homes or multi-family buildings were constructed.

But no matter how good-looking, or how high their energy-efficiency ratings are, when they’re in place, they’re only going to be as good as the installation job. When looking at such a major— and often costly — project as replacing a houseful of windows, it’s important to make sure the job is done right.

It is a common practice to replace windows and doors by removing the old component(s) without inspecting the frame and the surroundings.  It is easy, quick and cheap — but not necessarily professional.

The best way to ensure an air/water tight installation is by removing the entire window and frame, replacing deteriorated wood, adding house wrap, flashing the sides and leaving the bottom free to breathe.  Make sure the new window or door has flanges and that a mechanical top has been added, and that a material like QUAD Advanced or its equivalent is used instead of silicon caulk.

After all, homeowners want their new doors and windows to look sharp, work properly, and last a long time. As with many home improvement projects, spending a little extra time and money to do the job right will pay off in the long run.

Building Smarter

Subscribe for Project Insights & Updates

Get the latest tips, project highlights, and financing updates delivered straight to your inbox. Stay ahead with expert guidance from Lemus Construction for multi-family and commercial properties.

Related articles

Tracy C.
5 years ago
Lemus is very responsive, dependable, and THE BEST roofing company that we've used at multiple Residential Homeowner Associations and Condo Associations. They also do a beautiful Job with Deck installation AND window installation!
Response from the owner:Thank you, Tracy! Your review means so much to us. It’s been both a privilege and a pleasure working alongside you and your property management team on townhome and condo projects over the years. From roofing to decking and window installations, we’ve valued every opportunity to support your communities. Your recognition of our dependability and responsiveness means a great deal to our entire team. Long-term partnerships like ours are at the heart of what Lemus Construction does best, and we look forward to continuing to protect and enhance your properties for many years to come.
Pamela T.
4 years ago
Lemus Construction is top notch. Their integrity, dedication, hard work and attention to detail shows in all their completed projects. They are always friendly and reliable which is an added bonus. I can't say enough great things about this company. They take the worry out of hiring a contractor.
Response from the owner:Hi Pamela, Thank you so much for this 5-star review. We really appreciate you being a loyal collaborator and helping to share the word about us. We’re here for you anytime.
John M.
9 months ago
Superb craftsmanship! Adherence to our established budget and excellent communication throughout.
Response from the owner:Thanks John for taking the time to share your experience and the kind words, it means a lot to our entire team. We take pride in delivering quality craftsmanship and maintaining clear, consistent communication from start to finish. Thanks for the opportunity to work with you & please don't hesitate to reach out for any other goals.
Gamboa C.
2 years ago
Response from the owner:Hi Gamboa, Thank you for your 5 star review! We’re so proud of what we do, and it’s amazing to know that our hard work was noticed and valued. We can't express our gratitude enough.
Esperanza M.
4 years ago
I replaced all my windows, and they did an excellent job. Super, dependable family-owned company. I highly recommend Lemus Construction. The estimate was done by the owner and he stayed right on target. They crew is very skilled. They were efficient, responsive and easy to communicate with. Our windows look amazing! It feels like we are in a brand-new house. Thank you Lemus.
Response from the owner:Hi, Esperanza. We are thrilled that you had a positive experience with us! Thank you so much for the kind words.
Bryan B.
6 years ago
Response from the owner:Hi Bryan, thank you for your feedback! We are glad you enjoyed your experience with us.
Mary and J.
4 years ago
Lemus Construction replaced my roof, skylights, and my attic ventilation. They also resided my home. I was so pleased with the quality of their work! They showed up on time, was very clean with all their materials, and the quality of their workmanship was first to none. I will not have anyone else do work on my house. A superb company with excellent workers. And all the work comes with their guaranteed warranty.
Response from the owner:Hi, Mary and John. We appreciate the kind words and are glad we could provide you with a positive experience!
Howard A.
9 years ago
Professional, good prices and workmanship that is second to none! Everyone is friendly and work gets done on time and on budget.
Response from the owner:Hi Howard, we strive to provide the highest level of service possible. Thank you for taking the time to share your experience!
MANNY
4 years ago
Outstanding service and Professionalism!
Response from the owner:Thank you so much for taking the time to leave us a 5 star rating - it's much appreciated!
Alex R.
12 months ago
Acabo de remodelar mi casa hicieron un gran trabajo
Response from the owner:Gracias, Alex. Nos alegra saber que quedó satisfecho con el trabajo de remodelación. Fue un placer trabajar en su hogar y agradecemos la confianza que depositó en nuestro equipo.
Marianne C.
4 years ago
Response from the owner:Hello Marianne, Thank you so much for taking the time to leave us a positive rating!
Nicole B.
4 years ago
Lemus is a great company to work with from their ownership and administration to service- they have a great team. As a property manager, its crucial to have reliable vendors. My residents always comment about how hard Lemus works and their workmanship shows in the quality of their finished product. I highly recommend Lemus!
Response from the owner:Thank you so much for taking the time to leave us a rating. We feel very fortunate to have the opportunity to work with you!
Joe A.
1 year ago
Response from the owner:Hi Joe, thank you for the 5-star rating! We appreciate you taking the time to support our team—your feedback means a lot.
DAVE T.
4 years ago
Great company, I highly recommend! Complete roof tear off (2 layers) and replacement on a 2800sf colonial including removal of old solar panels and skylight replacement as well as gutter replacement completed in under 2 days. Extremely professional and knowledgeable crew and management. They are efficient, neat, courteous, and meticulous. The finished product is amazing, price and financing options are great, and the Warranty is the best in the business.
Response from the owner:Hi, Dave. We are thrilled to learn that you had a positive experience with us! Thank you so much for the kind review.
Andrew J.
12 months ago
The foreman and workers were efficient and polite. They told us everything they were doing and got it done in a reasonable time. Very good company, would highly recommend them
Response from the owner:Thanks for the support Andrew! We love to hear of our teams excellence and efficiency & glad that we kept the consistent & clear communication. It is important to us that every homeowner knows exactly what is happening during their project, and I am glad our methods kept you well informed. We are grateful for the recommendation and are always here if you need anything in the future.
Neal H.
4 years ago
On time, on budget— and no issues once they wrapped up. Guys were great. I highly recommend this company.
Response from the owner:Hi Neal, Thank you so much for your 5-star review! We will share this with the our team to let them know to keep up the amazing work.
Patti W.
4 years ago
Response from the owner:Hi, Patti. We really appreciate the rating, and are glad we could provide you with a positive experience!
Rui L.
4 years ago
I have been dealing with Lemus Construction since 2010, Victor and his team have are great and very professional over the years they completed various of my projects commercial and residential, i recommend Lemus to all my family and friends.
Response from the owner:Thank you for taking the time to share your experience. Your loyalty is immeasurable and extremely valued by our team!
Guerin H.
5 years ago
Servicio profesional
Response from the owner:Hi Guerin, Thank you for your positive feedback! We are at your service.
Kyle B.
3 years ago
Absolutely thrilled with the window installation and painting services provided by Lemus Construction! From start to finish, the process was seamless and professional. Mike and his team arrived promptly, worked efficiently, and paid meticulous attention to detail. Our new windows not only look fantastic but have significantly improved energy efficiency. Additionally, the painting job transformed our space, with flawless results that exceeded our expectations. Communication was excellent throughout, and the crew left the site clean and tidy. I highly recommend Lemus Construction for their top-notch craftsmanship and exceptional customer service!
Response from the owner:Kyle! Thanks for taking the time to share your review of our services! Your feedback is invaluable in helping us provide the best service for our clients. We really appreciate you taking the time to help us grow!
Henry R.
1 month ago
Great company kudos to Annette and chris service is there middle name
Response from the owner:Thanks Henry! Always a pleasure!
Patty B.
4 years ago
The staff at Lemus was great to work with. I would recommend them. Great communication and very accommodating.
Response from the owner:Hi, Patty. Thanks for taking the time to share your positive experience with our staff. We all truly appreciate it!
Lisa S.
1 year ago
I can’t say enough good things about Chris, JJ and the contractors who replaced my roof. Chris showed up at 7am to accommodate my work schedule, had a quote to me within a couple of hours and answered any and all questions. JJ was amazing at sharing the progress and issues that were found, took care of remediating everything and finished timely. The area was clean of debris. He pulled the permits for me, worked with my HOA and was available for any question
Response from the owner:We can’t thank you enough for this wonderful review. Chris and JJ always go above and beyond to make sure our homeowners feel supported throughout the entire roofing process. It’s great to hear everything from scheduling to cleanup was handled to your satisfaction and we'll be sure to pass along your good graces to the team. Thanks for choosing Lemus!
Jill G.
4 years ago
I am the manager of a condominium association in Lansdale, Pa. We just finished a 7-year roof and gutter replacement project with Lemus Construction. After bidding this project out and meeting with all the bidders, we knew that Lemus was the contractor. The crews are the hardest working people, very respectful, and experienced. Lemus helped us through this project during COVID, inflation, and unexpected circumstances. The adminstrative team and owners are excellent. They met with the Residents each year with powerpoint presentations and answered all their questions to ease their concerns. We sent surveys out each year, and the results were outstanding. I would highly recommend Lemus for your roofing and gutter replacements. They also did some siding repair for us along the way. I cannot say enough about Lemus. Thank you for making my job easy.
Response from the owner:Hi, Jill. We really appreciate the kind words and are so glad we could provide you with a positive experience!
Fran H.
1 year ago
We had a disastrous situation by a previous contractor (I'd love to name them but won't) on our commercial roof. We were expecting a full replacement would be needed. Victor met with us on site. We walked the entire roof and he pointed out the problem spots and explained in detail, the work that would be needed to remedy our issues. His estimate was very fair and he was up front about some potential additional work that might be needed that could not be determined at the time of the survey. Those costs came in at a minimum when the work was done. Lemus's professionalism & craftsmanship was incredible from the start of the process to the end. Our issues are completely resolved and we are no longer worried every time it rains!
Response from the owner:Hi Fran, we’re so happy to hear this feedback! From the start, our goal was to provide you with a clear, honest assessment of your commercial roof and create a repair plan that would last. Victor’s walkthrough, pointing out problem spots and explaining the process, is exactly how we strive to keep homeowners and property owners informed every step of the way. We’re proud that our roofing team delivered quality craftsmanship that not only fixed the issues but also brought back your peace of mind. You’ve been a pleasure to work with, and we’re truly grateful for your support and trust in Lemus Construction.