Window Cleaning · Southern NH & North-Central MA
We bring clarity to every view.
Joslin & Co cleans residential and commercial windows across southern New Hampshire and north-central Massachusetts: interior glass, exterior glass, storm windows, and screens.
$1,000,000 insured
General liability plus workers’ compensation.
Owner-operated
Nico Joslin has cleaned windows for ten years.
Same crew, every visit
The same cleaners return to your property.
COI on request
Certificate of insurance and net-30 for commercial.
Family owned · New Ipswich, New Hampshire
A family-owned company, and the same crew comes back
Nico Joslin has cleaned windows for ten years. He founded Joslin & Co in March 2024. This is an owner-operated company, not a franchise with a manager and a rotating roster.
The same cleaners return to the same property. A homeowner who is uneasy about who is around the house knows exactly who is arriving. A property manager gets a crew that already knows the building, the access, and which windows are the awkward ones. A national franchise cannot structurally promise that, because its crews rotate.
We work out of New Ipswich and cover two states, southern New Hampshire and north-central Massachusetts. You are messaged the day before we come, so the arrival is never a surprise.
What people worry about
Most people hesitate to book because of what could go wrong
Window cleaning is not a complicated purchase. The hesitation is almost never about the cleaning. It is about letting someone with a ladder and a blade near the house. These are the concerns homeowners actually raise before they book:
Damage to the house
Ladders resting on gutters, scratched siding, and boots through a planting bed. The clean costs less than the repair, which is why it’s worth asking who is carrying the ladder.
Broken or scratched glass
Older glass scratches more easily than modern tempered units, and a blade in the wrong hands does permanent damage. This is the single most common worry about houses with original windows.
Screens and storms coming back wrong
Screens bend. Storm windows get put back in the wrong opening or not seated properly. Both are avoidable, and both are why some companies decline the work rather than deal with it.
Not knowing who is showing up
A crew you have never met, on a day you were not expecting, or a no-show after a confirmed appointment. You are messaged the day before, and the same cleaners come back each visit.
Every one of those is a reason to ask about insurance before you ask about price. It is the right question, and the next section is the honest answer to it.
What we do
Four services, and two of them are abrasive work on glass
Post construction cleanup and hard water restoration both involve taking abrasive tools to a window. That is precisely where glass gets damaged, which is why experience and insurance matter more on those jobs than on a routine clean. See all window cleaning services if you are not sure which one you need.
Residential Window Cleaning
Interior glass, exterior glass, storm windows, and screens. Most homeowners settle into a maintenance plan, annual or semi-annual, timed to the season they actually want to look through clean glass.
Commercial Window Cleaning
Storefronts on a recurring schedule, and buildings up to five stories. Certificate of insurance on request, uniformed technicians, and net-30 invoicing. Frequency runs from weekly to quarterly.
Post Construction Window Cleaning
Construction debris and paint bond to glass and will not come off with soap and a squeegee. This is abrasive work, steel wool and razor treatment, and it is labor-intensive.
Hard Water Window Restoration
Lime and mineral deposits bond to the surface, which is why a window can be washed properly and still look cloudy. Restoration can require polishing and abrasive cleaning.
Why the insurance question matters
Ask any window cleaner whether they carry workers’ compensation
Most homeowners know to ask, “Are you insured?” Fewer know there are two different answers to that question, and that only one protects the homeowner.
General liability covers damage to your property, a broken pane, a dented gutter, a scratched sill. Workers’ compensation covers the person doing the work. If an uninsured cleaner is injured on your property, off a ladder, or off a roofline, that claim can reach your own policy.
Plenty of small operations in this trade carry liability and skip compensation coverage, because it is expensive and often not required at small headcount. We carry both: $1,000,000 in general liability and workers’ compensation, with a certificate of insurance available on request.
It is a fair question to ask every company that quotes you.
Service area
Two states, sixteen anchor towns
Joslin & Co works out of New Ipswich, close enough to the state line that the service area covers both southern New Hampshire and north-central Massachusetts.
New Hampshire
Keene · Peterborough · Milford · Nashua · Manchester · Concord · Salem
Massachusetts
Worcester · Leominster · Fitchburg · Littleton · Chelmsford · Lowell · Marlborough · Concord · Acton
New England glass
Storm windows, divided lites, and why older houses take longer
A lot of window cleaning pricing and scheduling assumes a modern house with large single-pane sashes. Much of the housing stock in southern New Hampshire and north-central Massachusetts is nothing like that, and it changes the work.
Storm windows
Exterior storm windows sit in front of the primary sash, which means there are additional glass surfaces to reach and the storm itself has to be handled before the window behind it can be cleaned properly. Triple-track and double-track units need to be moved through their tracks to expose the outer face of the lower sash. It is real additional labor, and it is the reason some companies decline the work outright.
We clean storm windows. If your house has them, it does not disqualify you from getting the glass cleaned properly.
Divided lites and grids
A six-over-six or eight-over-eight colonial sash is not one pane of glass. It is twelve or sixteen small panes, each with its own perimeter of muntin to detail around. A window with true divided lites takes several times longer than a modern picture window of the same size, and it needs hand work rather than a pole. This is the single most common reason two houses on the same street quote very differently.
Older glass
Antique glass scratches more readily than modern tempered units, and wooden sashes swell and stick with humidity. Both are reasons to be careful about who takes a blade or a scraper to a window in an older home.
Screens are cleaned as part of residential service, along with interior and exterior glass.
How the work is done
Water-fed poles for reach, hand work for detail
Two methods do most of the work in this trade, and the right one depends on the window rather than on habit.
Pure water and water-fed poles
A water-fed pole system filters tap water to remove the dissolved minerals that cause spotting. Ordinary water leaves those minerals behind as it dries, which is what produces spots and streaks. Purified water carries nothing to leave behind, so the glass can be rinsed and left to dry without toweling. It also means upper stories can be reached from the ground, which keeps ladders off gutters, siding, and planting beds.
We use water-fed pole systems along with traditional methods.
Hand detailing
Interior glass, divided lites, delicate glazing, and anything needing close inspection is worked by hand. A pole is efficient on open exterior glass and wrong for a colonial sash with sixteen small panes.
When abrasive work is needed
Post construction cleanup and hard water restoration are different again. Construction debris and paint bond to glass and need steel wool and razor work to come off. Mineral scale needs polishing and abrasive treatment. Neither responds to soap and a squeegee, and both carry a genuine risk of damaging glass if handled without judgment about what the surface can take.
What changes the price
How we price window cleaning
Two houses with the same square footage can be very different jobs. These are the factors that actually move the number, which is why we look at the property before quoting it.
| Factor | Why it matters |
|---|---|
| Number of panes | Pricing tracks panes, not rooms. A grid sash counts as many small panes, not one window. |
| Divided lites and grids | Multiplies detailing time substantially over plain sashes. |
| Storm windows | Additional surfaces, and the storm has to be worked to reach the sash behind it. |
| Screens | Removed, cleaned, and reinstalled as part of residential service. |
| Interior and exterior | Interior work adds access, furniture, and floor protection. |
| Number of stories | Ground-level glass is faster than anything requiring pole reach. |
| Access | Decking, plantings, slopes, and tight side yards all slow ladder and pole placement. |
| Glass condition | Mineral scale, paint, or construction debris is restoration work, not routine cleaning. |
| Frequency | Glass on a maintenance schedule never reaches the state that one-off cleans start from. |
For commercial work the same logic applies, plus storefront frontage, story count up to our five-story ceiling, and how often the schedule runs.
When to book
Spring and fall are when this work gets done in New England
Window cleaning in this region is seasonal, and the two natural windows are straightforward.
Spring
Winter leaves road salt, sand, and grime on exterior glass. Spring cleaning clears it and restores light after the darkest part of the year. One thing worth knowing: booking during the heaviest pollen weeks means fresh pollen lands on newly cleaned glass within days. Scheduling once the worst of it has passed gives a much better result.
Fall
Clearing summer pollen and dust before winter matters more than people expect, because grime left on glass through cold months has time to bond. Fall cleaning also buys maximum light going into the shortest days of the year, which is the part most homeowners actually notice.
How often
| Property | Typical frequency |
|---|---|
| Most homes | Once or twice a year |
| Homes on a maintenance plan | Annual or semi-annual |
| Storefront and retail | As often as weekly |
| Offices and low-rise buildings | Quarterly through semi-annual |
| After construction or renovation | Once, as a restoration-grade clean |
Most residential customers settle into a twice-yearly rhythm. It is the simplest way to keep glass from ever reaching the state where it needs more than a routine clean.
Common questions
Window cleaning questions we get asked
How often should I have my windows cleaned?
Once or twice a year suits most homes in this region, timed to spring and fall. Houses near busy roads, under heavy tree cover, or exposed to irrigation overspray benefit from more frequent cleaning, because the material landing on that glass is the kind that bonds if it is left.
What if it rains after you clean?
Rain does not make clean windows dirty. Dirt makes windows dirty. Clean glass with nothing on it to bond to sheds rain without spotting. What causes spotting is rain running over glass that already carries dust, pollen, or mineral residue.
Do you clean storm windows?
Yes. Exterior storm windows and the sashes behind them are part of residential service. Not every company takes that work on, so it is worth asking whoever quotes you.
Do you clean the inside as well as the outside?
Yes. Residential service covers interior glass, exterior glass, storm windows, and screens.
Are you insured?
Yes, and it is worth being specific about what that means. We carry $1,000,000 in general liability and workers’ compensation, and a certificate of insurance is available on request. General liability covers damage to your property. Workers’ compensation covers the person doing the work. If an uninsured cleaner is injured on your property, that claim can reach your own policy.
Can I remove hard water stains myself?
Household glass cleaner and a squeegee will not remove bonded mineral deposits. That is what defines the problem rather than ordinary soiling. Removing it requires polishing and abrasive treatment, and abrasive work on glass can leave the window worse than it started if it is done without judgment about what the surface can take.
Why does post construction cleaning cost more than a regular clean?
Because it is a different job. Paint, adhesive, mortar dust, and construction debris bond to glass and need steel wool and razor work rather than washing. It is slower and harder on materials, and it carries real risk to the glass, which is why it is quoted separately.
Can you give me a price over the phone?
No. Pane count, grids, storms, stories, access, and the condition of the glass all change the job, and none of that is visible over the phone. Call (978) 340-3890 or send the form, and we will come out, look at the property, and quote it, and on most jobs we complete the work on that same visit.
How high can you go?
Up to five stories. Above that you need a company set up for greater height, and we would rather tell you that than take the job.
Do you work with property managers and businesses?
Yes. Storefronts, offices, and buildings up to five stories, on schedules from weekly to quarterly. Certificate of insurance on request, uniformed technicians, and net-30 invoicing.
Get a quote for your property
We explain how the service works, come out to look at the property, and quote it. On most jobs we complete the work on that same visit. There is no separate estimate appointment and no second trip.