Cost of Replacing Roof Underlayment: What You Need to Know: 1 Minute to Understand Roof Underlayment Replacement CostsSarah ThompsonJun 13, 2025Table of ContentsFactors Affecting Replacement CostExpected Cost RangeFAQTable of ContentsFactors Affecting Replacement CostExpected Cost RangeFAQFree Smart Home PlannerAI-Powered smart home design software 2025Home Design for FreeReplacing roof underlayment is a crucial aspect of maintaining your home's integrity and protecting it from water damage. Understanding the cost involved can help you budget accurately and make informed decisions. So, what factors influence the cost of replacing roof underlayment? Factors Affecting Replacement Cost 1. **Type of Underlayment**: There are various types of underlayment materials available, such as asphalt-saturated felt, synthetic underlayment, and rubberized underlayment. Each comes with its own pricing, with synthetic materials generally being more expensive but offering better performance. 2. **Roof Size and Pitch**: The total area of your roof and its steepness significantly impact labor costs and material estimates. Larger roofs or those with a steep pitch require more time and effort to replace the underlayment, leading to higher costs. 3. **Labor Costs**: Depending on where you live, labor costs can vary widely. Comparing quotes from local roofing contractors can help you find the best deal. Expected Cost Range The cost to replace roof underlayment typically ranges from $1 to $3 per square foot for materials alone. Labor can add an additional $2 to $5 per square foot, depending on the complexity of the job. Therefore, you might be looking at an overall cost of approximately $3 to $8 per square foot. For a standard-sized roof (around 1,500 square feet), homeowners can expect to pay between $4,500 and $12,000 in total, depending on these factors. Always consider getting multiple estimates to find a price that works within your budget. FAQ Q: How often should roof underlayment be replaced?A: Roof underlayment typically lasts between 20 to 30 years, but it should be inspected regularly for any signs of damage or wear. Q: Can I replace roof underlayment myself?A: While DIY is possible, hiring a professional is recommended to ensure proper installation and avoid potential safety hazards.Home Design for FreePlease check with customer service before testing new feature.