Clean the surface

and stainless steel

and wall preparation for rendering

For frames without back attachments

WD-40 Specialist Fast Dry Contact Cleaner 290g 21104 Compact Fluorescent Clean the surfaceWD 40 Specialist Fast Dry Contact Cleaner 290g is a precision electronics cleaner formulated to safely remove oil, dirt, flux residue, and condensation from sensitive electronic components. Its fast drying formula leaves absolutely no residue, making it safe for use on circuit boards, connectors, switches, relays, and other delicate electronics. The spray rapidly penetrates into hard to reach areas, delivering a thorough clean even in tight spaces