Calculator Terms of Use

To access our free-to-use online software, please provide your company name, name and email address in the boxes below, read the statements and then tick the box to agree to the terms of use:

Your Details

Company Name:

Your Name:

Your E-mail Address:


Use of the interactive features indicates acceptance of data collection & use.

Architects, engineers or other users of this software must satisfy themselves in respect of the adequacy of their design.

Guttermaster can not be liable for any design undertaken by users of this software.

All calculations and output generated are unique and relevant to Guttermaster products.

They should not be used in conjunction with any other roof drainage products.