Cash back savings offer on Andersen Windows, only at Riverhead Building Supply

Andersen Windows – up to $750 cash back!

Earn cash back on your Andersen Window purchases


From October 1 - November 28, 2017, you can earn up to $750 cash back when you purchase Andersen Windows from Riverhead Building Supply.

Purchase $20,000 - $28,000 of Andersen Windows, receive $500

Purchase over $28,000 of Andersen Windows, receive $750

Offer expires November 28, 2017

Download and complete the rebate form to receive your cash!

VELUX Savings

 Optimize Energy Efficiency with Seasonal Automation with VELUX

Velux Skylights reduce energy dependency and maximize efficiency by allowing the homeowner to control blind positioning or the system to automatically optimize energy performance based on outside conditions. 

Receive an average of $730 on product and installation with federal tax credit eligibility. For more information, visit

Velux offers easy programmable remote control for winter and summer modes, improving energy performance rating up to 40%.

GAF REWARDS- rewarding you all year long!


Join GAF REWARDS, the industry's best rewards program today with rewards starting at 0.5% for every qualifying residential product purchase you make in 2017!


  • Purchase qualifying GAF Residential Products between January 1, 2017 and December 31, 2017
  • Have your Authorized Account Holder log on to your account at
  • Click on "Submit an Invoice," and complete the online claim form with your invoice(s). 
  • Redeem GAF Reward Bucks upon validation of claim by clicked "Redeem" and following the instructions provided.