★ 4.9 Google Rating | Licensed & Insured | Since 2003

Drafty Windows?

We measure every opening and give you a clear written estimate for new windows.

Why Alan Construction:

Replacement Windows That Seal Tight

Old windows let heat out, cold air in and make rooms noisy. We replace them with energy efficient windows that are measured for each opening, installed level and square, and sealed with proper flashing and trim so air and water stay out. Whether you are replacing one window or every window in the house, our crews do the work on homes across Pittsburgh, from Squirrel Hill and Brookline to Mount Lebanon and Bethel Park.

Window Styles We Install

We help you choose the right style for each room, with energy efficient glass throughout.

Double Hung

The classic Pittsburgh window, easy to clean and ventilate.

Casement

Cranks open for full airflow and seals tight when closed.

Sliding

Slides side to side, good for wide openings.

Bay and Picture

Big views and more light for living rooms.

Repair or Replace Your Windows?

Some window problems can be fixed. These signs tell you new windows are the better choice.

Replace the Windows

A Repair May Do

Signs It Is Time for New Windows

Old windows cost you money every month. Watch for these signs.

Drafts

Cold air you can feel around closed windows.

Foggy Glass

Condensation trapped between the panes.

Hard to Open

Windows that stick, jam or will not stay open.

Rotted Frames

Soft wood or peeling paint on the frames.

High Energy Bills

Heating and cooling costs that keep climbing.

Outside Noise

Traffic and street noise coming through the glass.

Measured, Flashed and Sealed

A good window can still leak if it is installed badly. We measure each opening, set every window level and square, and finish with proper flashing, sealing and trim so air and water stay out. Our windows use double or triple pane glass with Low E coatings and argon gas fills for better insulation. Wondering how long the job takes? Read how long it takes to replace a window.

Vinyl Siding

New siding and new windows together give the whole house a fresh look.

Soffit and Fascia

Finish the exterior with clean new soffit and fascia.

What Our Customers Say

Word for word from Pittsburgh homeowners on Google.

Alan and his team did an amazing job on our roof. Great communication along the way. Quick set up, thorough, safe, and well done job, finishing our entire house in one work day. Would absolutely recommend them for roof, siding, windows, etc.

Google reviewer avatar
Aaron K. Google review

Outstanding workmanship and professionalism! The roofing crew is superb and the quality of work is exceptional! I highly recommend this company, and frankly I could not be happier with the final craftsmanship. 6 stars!

Google reviewer avatar
Henry L. Google review

Alan was very easy to work with , he walked me through everything and made the whole process very smooth! They were efficient professional and had the job done quickly ! Overall no complaints and I have already recommended Alan Landy construction to friends !

Leanne T. Google review

Tha Alan Construction crew did a great job from the beginning to cleaning up at the very end I would recommend them above any other roofing contractor.

Mike V. Google review

How a Window Job Works

1 .

Free Estimate

We measure every opening and help you choose styles and options.

2 .

Order

Your windows are made to the exact measurements of each opening.

3 .

Install

Our crew removes the old windows and installs, flashes and seals the new ones.

4 .

Walkthrough

We clean up and show you how each window works.

Window Replacement Questions

Drafts, fog between the panes, windows that are hard to open, rotted frames and rising energy bills are the main signs. Single pane windows or windows over 15 years old are usually worth replacing.

Double hung, casement, sliding, bay and picture windows in vinyl and other durable materials.

Yes. Our windows use double or triple pane glass with Low E coatings and argon gas fills for better insulation.

Modern energy efficient windows reduce air leaks and heat loss, and most homes with old single pane windows see a difference after upgrading.

Most replacements of existing windows with similar sized units do not need a permit in Pittsburgh. If the opening changes, a permit may be required, and we handle that paperwork.

Most homes are finished in one to two days once the windows arrive, depending on how many we are replacing.

Yes. We replace a single window or every window in the house.

Yes. Every window gets proper flashing, sealing and trim so air and water stay out.

Fog between panes means the seal has failed and the insulating gas has leaked out. The glass unit or the window needs replacing.

Yes. Double and triple pane glass blocks more street and traffic noise than old single pane windows.

Doing both together lets us tie the trim and flashing into the new siding cleanly and gives the house one finished look.

Call us or fill out the form at the top of this page and we will come out to measure.