Good vs Bad Spray Foam Roofing Contractors: 5 Differences

The quality of a spray foam installation depends almost entirely on the contractor. Here are 5 specific differences between good and bad contractors.

1. Manufacturer Approval

Good: Manufacturer-approved, verifiable by calling the manufacturer directly, uses approved products, can issue manufacturer warranties. Bad: Not manufacturer-approved, offers only contractor warranties that expire with the business, may use non-approved products.

2. Equipment Quality

Good: Professional plural-component proportioning equipment, properly maintained and calibrated, capable of precise ratio and temperature control. Bad: Undersized, poorly maintained equipment unable to maintain proper mixing ratios — a primary cause of off-ratio foam.

3. Core Sampling Before Work

Good: Performs core samples before any proposal to verify wet insulation levels, provides objective data before recommending a solution. Bad: Makes recommendations based on visual inspection only, may skip this step entirely to save time.

4. Wet Insulation Handling

Good: Explicitly addresses wet insulation in the proposal, includes removal and replacement as a line item, won't foam over wet areas. Bad: Doesn't mention wet insulation, may coat or foam over wet areas to reduce cost — leading to blistering and system failure.

5. Third-Party Inspection

Good: Welcomes and facilitates third-party inspection at project completion for warranty issuance. Bad: Resistant to independent inspection, unable to provide manufacturer warranty documentation.