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About GSHI


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2008 represents our 36th year in business!
We specialize in windows & doors, vinyl siding & trim coverage, and roofing. We use only the finest products available to make properties beautiful and energy efficient. We are proud of the work we do and think you will be too! Put our experience to work for you.




Low Key Sales
We prepare comprehensive proposals, provide necessary literature and local customer references.  In the end, the final decision is yours.  High pressure just isn’t our style.

Exceptional Service
75% of our business comes by way of customer referrals, so we depend on today’s customers for tomorrow’s business.  We strive to treat our customers how we, as consumers, want to be treated.



Superior Craftsmanship
We have great confidence in our crews, their work and our products.  We understand that without excellent craftsmanship, we would not be where we are today and we take that fact seriously.

Certificates of Insurance for General Liability and Workers’ Compensation Policies are available upon request.  







We proudly introduce our talented team:

Peggy Arend is the Owner and manages the day-to-day operations of Granite State Home Improvements.  She was graduated Magna Cum Laude from New Hampshire College with a Bachelor of Science degree in Business Administration. Peggy and her husband Larry live in Newfields, NH  with their children, Katie and Jack.

Mike French
leads our sales force and meets with customers and potential customers to determine their needs and how we can best serve them.  Mike served six years in the US Navy and is presently enrolled in a business program at Southern New Hampshire University. Mike's experience includes window, siding, and roofing installation; extensive window and door installation training; and professional roofing and siding training through CertainTeed Corporation.  Mike is certified as an Installation Master through InstallationMasters™ (previously American Architectural Manufacturers Association).  Mike lives in Gilmanton, NH with his wife, Theresa.


Mike French and Peggy Arend share responsibility for sales, job coordination and customer relations.  They prepare comprehensive proposals, provide necessary literature and customer references.  In the end, the final decision is yours.  High pressure just isn't our style.  Ongoing training and testing allows us to share current information with our customers and ensure that our installations meet or exceed industry standards and specifications.

Our crews are comprised of exceptional craftsmen who take great pride in completing all installations in a timely and efficient manner.  We realize that without excellent craftsmanship, we would not be where we are today, and we take that fact seriously.  We have great confidence in all crews' abilities.



Heidi Wolf Ealy is our Office Manager and assists with the day-to-day operations, customer relations and scheduling estimates.  She has over 10 years of experience in her field and is a huge asset to our team.  Heidi lives in Franklin, NH with her husband, Paul, and her daughter Caleigh.


Support Staff - We are fortunate to have immediate field service and manufacturing support at hand from our suppliers. Vendor representatives provide technical support and we rely on these representatives to help us give the best quality service and expertise to our customers.






We are located on Route 140 in Northfield.  Stop by and see our showroom and great product displays!  


Take exit 20 off I-93.  Coming north you will continue straight through the intersection at Route 3 onto Route 140.  Coming south you will take a right off the exit onto Route 3 and take a right at the lights onto Route 140.  We are 1.4 miles from Route 3.  

Our office and showroom is within a 30-minute drive of Ashland, Alton, Belmont, Bridgewater, Bristol, Campton, Center Harbor, Concord, Franklin, Gilford, Gilmanton, Hill, Laconia, Loudon, Meredith, New Hampton, Plymouth, Sanbornton, and Tilton.  We provide service throughout New Hampshire and can provide local references in each of the communities listed above as well as in Thornton, New London, Exeter, Newmarket, Dover, Newfields, Stratham, Greenland, Rye and Wolfeboro.  For our customers we'll go to the ends of the earth - ok, maybe not that far, but certainly within the Granite state!





Visitors To Date!










~Established 1972~

 (603) 524-7152   

Route 140, Northfield, NH

(603) 778-6217 

83 Main Street, Newfields, NH

 Mailing address:   P.O Box 660 Winnisquam, NH  03289

gshi1972@metrocast.net



About GSHI  |  Windows & Doors  |  Siding  |  Roofing  |  Testimonials




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