Contact PerBond

PerBond is a small, independent, ad-supported site — there is no support team standing by, but a real person reads what comes in to support@perbond.com.

A few things this address is genuinely useful for: a calculator that gave you a result you think is wrong (say which tool — the adhesive coverage calculator, epoxy mix ratio calculator, bond strength calculator, cure time calculator, coverage per cartridge calculator, or lap joint designer— and what you entered); a tool or topic you wish existed on the site; an out-of-date fact or broken link in the blog, learn section, or the museum; or a bug in how a page looks or behaves on your device.

There’s no fixed response time to promise, and no ticket number or live chat — email is read and handled as it comes in. If a question is really about a load-bearing or safety-critical joint, a qualified engineer and the adhesive’s technical data sheet will give a more authoritative answer than this site can; PerBond’s tools produce general estimates for planning, and the site isn’t affiliated with any adhesive manufacturer or brand.

Before writing in about a tool result, it can help to double-check the numbers you entered — the area, ratio, shear strength, or dimensions are the most common source of a surprising answer. If it still looks wrong after that, that’s exactly the kind of message worth sending.