How To Patch A Hole In A Hollow Core Door
This particular hole was caused by a doorstop in which most cases it usually is. Hollow core doors are not very impact resistant so if you have hollow core doors in your home or place of business this How To fix a hollow core door tip will really help you save money and eliminate having to replace your doors.
You will need :
1 can of expanding foam such as GREAT STUFF™ (you can find this at any hardware store or Wal-Mart™)
1 tube of white all-purpose acrylic painters caulk (you can find this at any hardware store or Wal-Mart™)
Razor blade or flush cut saw
100 grit sandpaper (optional)
Door & Trim paint
Small painting Brush
How To Fix A Hollow Core Door:
To start off you want to remove all loose pieces from your doors damaged area. Shake your can of expandable foam for about 30 seconds and fill the hole from the inside of your door slowly working your way out. Be sure to wear gloves! This stuff is very intense when it gets in contact with your skin! Let it cure for as long as the label suggests. (I let this sit overnight) You will see that it expands quite a bit.
Your next step is to use your razor blade or flush cut saw and cut off the excess foam. Be sure to cut it back far enough so that it is not flush with your doors panel. You want to cut it back just a little because you will be applying your painters caulk over it which will then be flush with your panel. If you are having trouble cutting it back you can use a piece of 100 grit sandpaper.
Once you cut your foam back you are ready to apply your painter’s caulk. I used my razor blade to spread the caulk evenly making sure it looks smooth and the foams texture is not poking through the caulk. If that is the case you will have to cut back the foam a little more until you get a smooth finish with your caulk and let it dry before applying your second coat.
When you apply your second coat of caulk use your razor blade or an old credit card to mimic your doors wood grain pattern by slowly pulling your blade vertically over your caulk. This will leave a rippled imprint in your fresh caulk layer. It might take a few times but once you get a feel for it you will see it is quite simple to do but makes a big difference in your final outcome.
After your final coat of caulk dries you are ready to paint. Any cheap paint brush will do when applying your paint just be sure to use up and down strokes to blend in your paint and match the wood grain pattern. And that is how to fix a hollow core door for under $20