Terms of Use

By using ExteriorCalcs.com you agree to these terms.

1. Service

ExteriorCalcs provides free, informational home-exterior calculators and reference content. Use requires no account.

2. Estimates only — not a bid, not professional advice

All results are deterministic estimates computed from the inputs you provide and standard constants. They are for planning and education and are not a bid, quote, or professional roofing, construction, engineering or safety advice. In particular, roof, shingle, roof-cost and gutter tools may imply work at height: working on a roof is dangerous — measure from the ground where you can, use proper fall protection, or hire a licensed professional. Code checks (egress, ventilation) cite the 2021 IRC edition; local amendments prevail — confirm with your building official.

3. No warranty

The site is provided "as is" without warranties of any kind. While the formulas are tested against known values, we do not guarantee that any result fits your specific situation. You are responsible for verifying figures and measurements before relying on them.

4. Limitation of liability

To the extent permitted by law, Redbit S.r.l.s. is not liable for any damage arising from use of the site or reliance on its results.

5. Intellectual property

Content and design are protected. You may use the calculators for personal and professional purposes; you may not copy the site's content wholesale.

6. Provider

Redbit S.r.l.s., Viale della Grande Muraglia 494, 00144 Rome, Italy (VAT IT15237911001). Contact: [email protected].