Liquid sandpaper, also known as liquid deglosser, is used to prepare a surface for painting or refinishing by dulling the existing finish without the need for traditional sanding. It creates a slightly tacky surface that paint can adhere to, making it an alternative to mechanical abrasion.
Understanding Liquid Sandpaper (Deglosser)
Liquid sandpaper doesn't actually remove material like traditional sandpaper. Instead, it chemically softens and dulls the glossy finish of surfaces like wood or metal. This process removes the slickness, allowing new paint or varnish to bond effectively.
Benefits of Using Deglosser
- Less Mess: Avoids the dust created by traditional sanding.
- Saves Time: Often quicker than sanding, especially on intricate surfaces.
- Easier on Details: Can easily treat carved or detailed areas where sandpaper is difficult to use.
Step-by-Step Guide to Using Liquid Sandpaper
Using liquid deglosser is a relatively simple process, often involving just a few steps.
Preparation
Before applying liquid sandpaper, ensure the surface is clean and free from grease, dirt, and wax. Use an appropriate cleaner for the surface material. Protect surrounding areas with drop cloths or painter's tape. Wear gloves and work in a well-ventilated area.
Application
Apply the liquid deglosser according to the product's instructions. This typically involves wiping the liquid onto the surface with a cloth or applicator pad, ensuring even coverage. Some products require it to dwell for a specific time, while others are wiped on and off.
Drying
Allow the surface to dry completely as per the product's instructions. You may notice that your liquid sander deglosser leaves a hazy or foggy residue. According to the reference, that's okay and fully expected. This residue is part of the dulling process and provides the necessary grip for the new finish.
Second Coat (If Necessary)
If the first application doesn't sufficiently dull the finish, allow the surface to dry completely before doing the second coat if necessary.
Painting/Finishing
Once the surface is properly deglossed and completely dry, you can proceed with applying your primer or paint directly over the prepared surface and the expected hazy residue.
Quick Usage Summary
| Step | Action | Notes |
|---|---|---|
| Preparation | Clean surface, protect surroundings, ventilate | Remove dirt, grease, wax; wear gloves. |
| Application | Apply deglosser evenly | Use a cloth/pad; follow product instructions. |
| Drying | Allow to dry completely | Hazy/foggy residue is okay and expected. |
| Second Coat? | Re-apply if needed after drying | Only if first coat didn't dull surface sufficiently. |
| Finishing | Apply primer/paint | Proceed once surface is dry. |
Using liquid sandpaper can be an efficient way to prepare surfaces for painting without the physical effort and mess of traditional sanding.
