Planning information only
ProjectMeter provides educational information and arithmetic planning estimates. Results are not architectural, engineering, structural, electrical, plumbing, HVAC, environmental, legal, surveying, inspection or trade advice.
Calculation limits
A result is only as accurate as the dimensions, product values and project model used. Hidden damage, uneven substrate, access, design changes, local practice and package availability can change the final quantity. Confirm critical measurements and the exact product coverage before ordering.
Safety and regulated work
Stop when a task involves electricity, gas, refrigerant, structural loads, hazardous materials, unsafe roof or ladder access, excavation, pressurized systems or required permits. Use the appropriate qualified local professional and follow product instructions, utility-locate procedures and authority requirements.
Repair-guide boundary
Repair guides describe visible, non-invasive first checks only. They do not authorize removal of guards or panels, live testing, bypassing a safety device or opening a regulated system. Emergency conditions—including gas odor, fire, carbon-monoxide alarm, structural movement or electricity near water—require immediate action from a safe location.
Cost and schedule information
User-entered prices and published planning ranges can exclude tax, delivery, minimum orders, labour, removal, disposal, permits, regional availability, site protection and concealed work unless specifically stated. Market references are dated context, not a contractor quote, offer or guarantee.
External information
Manufacturers, agencies and standards organizations can revise or relocate information. Check the current document for the selected product and jurisdiction. A source link does not transfer responsibility for the final project decision to ProjectMeter.
Use your judgment
Do not rely on a calculator where an error could create injury, property damage or regulatory noncompliance. The methodology explains how estimates are produced; use the contact page to report a possible error.