All coupons have some restrictions. The most significant restrictions are as follows:
When using Lowe's coupons in-store, all items in your order must be full, regular price. Your coupons will not work in-store on sale items, "New Lower Price" items, "Contractor Pack" items or with any other discount. If your coupon shows a $0 discount instead of the expected savings, this is the most likely reason.
When using Lowe's coupons online, most Lowe's accounts may use up to 2 coupons in any 30-day period. Using more coupons than this will result in your orders being canceled by Lowe's without any explanation. In that case, your coupons cannot be used again.
Lowe's coupons cannot be used for the purchase of services, installation, or extended protection plans or gift cards. NXR, AGA, MARVEL, Bosch Benchmark, Heartland, ICON, Fisher & Paykel, Monogram, SMEG, Liebherr, Weber or Kichler products.
Home Depot Coupons
Home Depot coupons cannot be used for the purchase of John Deere, Cub Cadet, Little Giant LadderSystems®, Thermador® in select markets, Gaggenau®, Miele®, Dacor®, Viking®, Fisher&Paykel®, Sharp Insight™, Delonghi®, Casablanca®, Hunter Prestige®, Buckhaven, Weber, Lynx, Alfresco, OCI, Marvel, Bertazzoni, Aga, and Vent A Hood products.