We hereby guarantee that the casework and counter tops undertaken and completed by our concern have been done in accordance with the applicable drawings and specifications. We agree to repair or replace any or all of our work, together with any adjacent work which may be displaced by so doing that may prove to be defective in its workmanship or materials within a period of two (2) years from the date of substantial completion. Ordinary wear, tear, abuse, neglect or acts of God excepted. In the event of our failure to comply with these conditions within thirty (30) days after being notified in writing by the Owner, we do hereby authorize the Owner to proceed to have the defects repaired and made good at our expense. Charges for such work may be billed directly to our concern, and we will honor and pay the costs and charges for it upon demand.