Grand Banks Building Products

05/28/2026

DATE CHANGE! CSL RENEWAL COURSE - June 18th & 19th

Still need your 12 CSL credits? This is not your typical sit-down-and-zone-out renewal class.

Builder’s Briefcase brings real-world contractor conversations to the table — covering the contracts, scenarios, and day-to-day situations builders actually deal with in the field. Smaller class sizes keep things interactive, allow for real discussion, and give attendees the chance to ask questions instead of just being talked at for hours.

The feedback says it all:
“Covered a large amount of information, well-explained, not rushed…”
“Thought this would be my last renewal… might come back because of the class.”

NEW DATES:
📍 Grand Banks Building Products – Gloucester
🗓 June 18th & 19th
⏰ 8:00 AM – 2:30 PM

If you’ve been putting off your CSL renewal because every class feels the same — this one is different.

See our link in bio to register!

05/28/2026

DATE CHANGE! CSL RENEWAL COURSE - June 18th & 19th

Still need your 12 CSL credits? This is not your typical sit-down-and-zone-out renewal class.

Builder’s Briefcase brings real-world contractor conversations to the table — covering the contracts, scenarios, and day-to-day situations builders actually deal with in the field. Smaller class sizes keep things interactive, allow for real discussion, and give attendees the chance to ask questions instead of just being talked at for hours.

The feedback says it all:
“Covered a large amount of information, well-explained, not rushed…”
“Thought this would be my last renewal… might come back because of the class.”

NEW DATES:
DATE CHANGE! CSL RENEWAL COURSE - June 18th & 19th

Still need your 12 CSL credits? This is not your typical sit-down-and-zone-out renewal class.

Builder’s Briefcase brings real-world contractor conversations to the table — covering the contracts, scenarios, and day-to-day situations builders actually deal with in the field. Smaller class sizes keep things interactive, allow for real discussion, and give attendees the chance to ask questions instead of just being talked at for hours.

The feedback says it all:
“Covered a large amount of information, well-explained, not rushed…”
“Thought this would be my last renewal… might come back because of the class.”

NEW DATES:
Grand Banks Building Products – Gloucester
June 18th & 19th
8:00 AM – 2:30 PM

If you’ve been putting off your CSL renewal because every class feels the same — this one is different.

See our link in bio to register!

05/12/2026

A massive thank you to everyone who came out for The Modern Opening Install Event at True North last week!

The evening brought builders, architects, installers, and industry partners together for hands-on conversations around high-performance installation, smarter envelope integration, and the real-world details that matter most on the jobsite and add security and longevity to your installs.

Big thanks to our partners and - we couldn’t ask for a better team to collaborate with for this event!

Also, a shoutout to for being an awesome host again for us and for providing the incredible food for everyone!

Contractors - if you missed this demo but are interested in learning more about our installation practices & services, see our link in bio for more information!

05/06/2026

General Contractors - Let Us Be Your Sub!

Our crew brings years of industry experience and manufacturer’s certifications to every installation we do—from exact measurements to airtight sealing and weather-resistive detailing. This isn’t just installation - it’s expertise that directly impacts long-term performance, durability, and efficiency.

And this is just a glimpse of what you’ll see live at our event this Thursday!

Join us with our partners and for The Modern Opening: Performance + Installation Demo—where our team will perform a start-to-finish install of a large opening Marvin Modern unit, paired with best-in-class air sealing and weatherproofing best practices from SIGA.

If you care about tighter builds, better performance, and doing it right the first time—this is where you want to be.

Space is limited - see our link in bio to RSVP!

05/04/2026

Spring is the perfect time to start making those window and door upgrades and now for a limited time, Grand Banks is offering 10% savings on all Marvin Elevate windows & doors and all Trustile interior MDF doors.

From now until June 26, take advantage of this rare opportunity for additional savings on these high quality products from and - reach out to one of our sales reps for more information.

04/14/2026

Thinking about relocating but not sure where to begin? JOIN US THIS THURSDAY!

Buying and selling at the same time can feel overwhelming—but with the right guidance, it doesn’t have to be.

Join us for an informative panel discussion with local industry experts Muffy White of MWOS, Sara Seber of Engel & Volkers, and Andrea Donnelly of Movement Mortgage.  

The discussion, moderated by our very own Samantha O’Neal will cover everything from:

• First steps to prepare for your move• How to sell and buy strategically• Key financial and lending considerations• Tips for organizing, staging & planning ahead

Whether you’re moving across town or across the country, preparation is everything.

Come sip, snack, and get your questions answered by the pros!  RSVP via link in bio!

04/08/2026

Contractors and Builders—is it time to renew your CSL? Do it at Grand Banks!

We’re hosting a 12-Credit MA CSL Renewal Course designed specifically for working professionals who want clear, practical guidance on contracts, compliance, and risk management. Led by John McGowan of the Builder’s Briefcase, this course covers real issues you face on residential projects—from change orders and payment schedules to insurance, workplace safety, and consumer protection requirements under Massachusetts law.

📅 June 2-3rd
🕗 8:00–2:30
📍 Hosted by Grand Banks Building Products

Earn your required credits while sharpening your contracts and protecting your business. Space is limited—sign up via the link below!

https://www.generalcontractorslegalbootcamp.com/service-page/grand-banks-csl-renewal-12-credits

04/06/2026

Are you thinking about relocating in the near or not so near future?

Lost in the process of where to begin?

You don't want to miss this event!

Join us on April 16th at our Gloucester showroom as we take a deep dive into the entire process with our panel of top professionals who guide people through relocation every day: Real Estate Advisor, Sara Seber, Professional Organizer, Muffy White, and Senior Loan Officer, Andrea Donnelly. The panel will be moderated by Sam O’Neal, Project Manager at Grand Banks.

Space is limited and expected to sell out - grab your spot today via the link below! We hope to see you there!

https://tinyurl.com/3s7y6xpx

04/01/2026

Join Our Growing Team!

From warehouse to jobsite, precision, coordination, and care drive everything we do—and we’re looking to grow our team.

We’re currently hiring for a Warehouse & Delivery role supporting high-end window, door, and building material projects across the region.

If you:
• Take pride in being reliable and detail-oriented
• Understand the pace and demands of construction
• Want to be part of a team that values quality and professionalism

—we want to hear from you.

To learn more about the role and to apply - see our link in bio!

03/10/2026

Contractors, Builders, Architects & High-Performance Pros — this one’s for you.

Join us May 7 for an in-depth Product + Installation Clinic featuring Marvin Modern and SIGA.

The evening begins with a focused introduction to the Marvin Modern product line, including their latest innovation: Connected Home technology. From there, the Grand Banks Installation Team will perform a live, start-to-finish installation of a large opening Marvin Modern unit.

SIGA will walk through critical prep strategies for air and water control, sharing field-tested best practices for high-performance assemblies.

Clinic topics include:
• Rough opening assessment + prep
• Integrated weather-resistive barrier strategy
• Air sealing best practices
• Anchoring + structural considerations (including mulling)
• Exterior & interior weatherproofing ex*****on

Designed for architects, contractors, builders, and high-performance professionals, this session delivers practical insight you can immediately apply on site—with real installation detail and direct access to product experts.

Plus: BBQ from and brews from

Space is limited — reserve your spot through the link in our bio.

Join us on May 7th at True North Brewery for a high-performance product and installation clinic co-hosted by Marvin and SIGA.