I would give them so many more stars if I could. I hired 4Nalski Construction to replace 15 windows in my home. I had heard of them from someone who was delighted with their work. Having used other co's over the years 4Nalski stood out as the best one ever. They were so patient and explained everything so well. Their work was exceptional. Timely complete and very meticulous. These gentlemen are so professional and have such easy and kind personalities they were a dream to work with. I then hired them to fix some other issues with the house. Fixed my back deck, reshingled an area on my house, replaced trim and built a completely new front stairway that's beautiful. They have excellent vision and understood my style and what I wanted to achieve right away. I can't say enough good things about this company. My neighbor across the street hired them to do some shingling that turned out great! Going forward I wouldn't use anyone else.
Windows and doors, installed tight and trimmed clean
Replacement windows and exterior doors, flashed and sealed for coastal weather, then trimmed inside and out like they came with the house.
Windows & Doors on Cape Cod, done the Fornalski way
A window is only as good as its installation. We set every unit level and square, flash and seal it against wind-driven Cape rain, insulate the gaps, and then do what most installers skip: finish the trim inside and out to match your home, because we are finish carpenters first.
One window or the whole house, we handle drafty old units, fogged glass, rotted sills and doors that never latched right. Clients tell us the house feels quieter and warmer the first night, and looks better for years after.
A window install is really a weatherproofing job with trim on top. We set every unit square and plumb, seal and flash it against Cape weather, and then do the part most installers rush: casing and sills fitted so cleanly the new unit looks like it was always there.
What's included
- Full-house window replacement
- Single window and door swaps
- Exterior and entry doors
- Sliding and patio doors
- Proper flashing and air sealing
- Rotted sill and frame repair
- Interior and exterior trim to match
- Locks and hardware adjusted right
How your project runs
You tell us what you have in mind, we visit, measure and listen. Free, and with zero pressure.
A clear scope, a real timeline and a price you can plan around. Everything in writing before work starts.
Our own crew, on schedule, with one point of contact and a job site swept clean every single day.
We walk the finished work together, detail by detail. It is done when you say it is done.
Recent projects
A few real windows & doors jobs. See more in our full portfolio.
What homeowners say about this work
We worked with Gabriel to have rotted trim, old/broken gutters and an exterior door and window replaced. It was an excellent experience. Gabriel gave us a schedule and continually kept us up to date on the progress until completion. Super happy with the work and a genuinely good experience.
I highly recommend Gabriel and Sérgio from 4nalski. They made sure they understood what the job entailed and explained what they could do. They are busy but I appreciate how they worked with me fit my little job in.
Common questions
How many windows can you replace at once?
Do you repair the trim and siding around the new window?
My window frames are rotted, is that a problem?
Will new windows really make the house warmer?
Do you install doors too?
Get your free windows & doors estimate
Tell us about your project. We visit, measure, and send a written estimate with a clear scope and timeline. No pressure, no surprises.
Get a free quote in 3 easy steps
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