1. Subcontracting: Terms for engaging subcontractors - include when the contractor may need to subcontract portions of work

2. Environmental Protection: Specific environmental requirements - include for projects with significant environmental impact

3. Force Majeure: Provisions for unforeseen circumstances - particularly important in regions with extreme weather conditions

4. Variations and Additional Work: Procedures for handling changes to scope - include for complex projects

5. Quality Control and Inspection: Detailed quality assurance procedures - include for large-scale or high-value projects

6. Liquidated Damages: Compensation for delays - include when specific completion timing is crucial

7. Performance Bond: Requirements for performance security - include for high-value contracts

8. Maintenance Period: Post-completion maintenance terms - include when ongoing maintenance is part of the agreement

1. Schedule 1: Technical Specifications: Detailed technical specifications of the roofing work including materials, measurements, and installation methods

2. Schedule 2: Site Plan and Drawings: Architectural drawings, roof plans, and site layout details

3. Schedule 3: Payment Schedule: Detailed breakdown of payment installments and milestone payments

4. Schedule 4: Project Timeline: Detailed project schedule including milestones and critical paths

5. Schedule 5: Material Specifications: Detailed specifications of all materials to be used including brands and quality standards

6. Appendix A: Required Permits and Certifications: Copies of necessary permits, licenses, and certifications

7. Appendix B: Insurance Certificates: Copies of required insurance policies and certificates

8. Appendix C: Safety Procedures: Detailed safety protocols and emergency procedures