Do You Need To Sand Glass Before Painting
You always want to verify the fitment and panel gaps before proceeding to paint.
Do you need to sand glass before painting. Gently sand the wall using very little pressure over the entire wall then use the tack cloth to remove dust. If you plan to put latex paint over oil paint then you will need to rough the surface of the oil paint first. At face value the painting process might sound straightforward.
Keep in mind that most of those paints require you to brush the paint on the glass which will give you a. Be wary about lead paint. Tips and Techniques for Painting Glass.
Besides sanding the surface any holes or cracks should be covered too. 2 Climb the Sandpaper Grit Scale. To raise the profile of low spots in the surface use a fiberglass glazing putty.
This will allow you to sand continuously between each component creating a smooth consistent jointOnce the seams are all of proper gap and fitment the items can be taken back apart. If you try to paint over that then your new paint job will start chipping off almost as soon as you paint it on there. Apply a good cleaner or degreaser with a LINT FREE cloth to give the surface a good cleaning.
If the gel coat is sanded through and the strands of the glass show this needs to be sealed with fiberglass resin or body filler. If you use the correct primer you can avoid sanding altogether. Use painters tape to tape around any areas you dont want painted that cant be removed.
Alternatively you can place a bit of soft fabric a old sock or quilt batting for example inside the glass to keep your pattern visible. Literally Ive painted countless pieces of furniture and cabinets over the past 20 years and have RARELY sanded anything before painting. They can be baked and will cure to a hard chip-resistant finish.