How To Replace A Rotted Interior Window Sill
Window sills are quite prone to damage from pets, plants, and weather over time. Repairing or replacing old window sills is an easy home repair project that only takes a few hours and bones tools.

We beloved our homes, only they aren't impervious. Cruddy cracks, dings, and everyday damage can build up over time and window sills are quite prone to harm from pets, plants, and weather. A interior window sill is the bottom portion of the window, and ordinarily has a lip that overhangs the trim molding.
In today's tutorial, I am showing how to replace interior window sills from some of the most common bug:
- Rot
- Water Impairment
- Bubbles MDF or pressboard
- Pet damage and deep hook marks
Repairing trim is actually practical, economical, easy to install, and only takes, at nigh, a few hours!

And so, start, nosotros have the crime. There'south actually iii of these that look this bad. This damage is all from a wonderful pup we rescued. Unfortunately, he had astringent separation anxiety, just information technology seems to have calmed downwardly afterwards a year of working with him. So information technology's fourth dimension to say goodbye to this eyesore!
Tools and Materials
- Hammer or prybar
- Utility Knife
- Mitt Saw or Jig Saw
- Nails or Brad Nailer (This is the peak rated kit we utilise)
- A board and router or a millwork board to lucifer the other sills in your home
- A product to stop rot (you may or may not need this but we have used this i in the by)
- Forest Filler
- Putty pocketknife
- Level
- Trim Caulk
Removing Window Casing and Sill
The first step is always the well-nigh worrisome, right? The window itself isn't actually fastened to the interior sill. The sill should be installed into the framing.
Step one: Remove any side casing
Casing is trim that is effectually the outsides of doors and windows. Not all windows have casing, as our was just connected to drywall and caulked to hibernate seams. You will likely have to remove this because the casing sits on elevation of the sill, preventing the sill from moving upward.
The photos below are of me removing door casing, but all the same steps apply.

To remove casing, cut the caulk line on both sides that hides the drywall and window framing seal. Drag a razor knife top to bottom to do this, making certain to become the full caulk line if yous can. Cutting any caulk effectually the sill as well. (photo ane)
I use a crowbar to pull out the casing from the drywall. If prying, make certain employ a brace confronting the wall so you lot don't dent the drywall. (photograph 2) Cleanup the excess caulk and remove nails/staples. (photograph 3 & iv)
Oft times the casing tin can exist salvaged and put back on if you lot are careful, simply sometimes information technology needs replaced.
Pace ii: Pry off the sill.
Use a prybar or chisel to slowly pry the sill up. A hammer also helps. Keep the sill in one slice so you can use it equally a model when cutting the new sill. So set information technology bated for later.

Dealing with Rot
At this stage, the biggest thing to watch for is any rot that may be effectually the frame. Rot will need to exist removed, or it volition continue to spread. If you do find pocket-sized mold or rotted wood, replace or clean and apply a product like this to finish rotting.
Rot needs two things to happen: a disease inducing bacteria or fungus and h2o. Brand sure that you are fixing the source of the h2o that caused the rot.
If y'all detect major rot (structural or the h2o source can't be found), here is where I recommend seeking professional aid as the window and framing may need to be replaced.
Later solving those problems, if whatsoever, hither is a smashing opportunity to fill any gaps if they exist to ensure a more air tight seal. Take window spray foam and spray into the gaps and allow to dry. Cutting abroad the excess foam with a razor blade prior to installing the new sill.
Step 3: Cut The New Sill

We made our own hither. A simple meet the router to create a bullnose edge makes whatever appropriate board a proper sill. If you practice not have a router, most window sill material can be plant in the millwork section at a home improvement store similar Home Depot. Hither is an example similar to ours. You will need to cut it to size however. Mark the board using your template from previous sill and cutting.
Step 4: Attach new sill
Utilize nails or brad nails to install the wood board into place ensuring to nail into the framing below. I do not recommend gluing as it isn't needed and will make any future repairs more than hard.

Pace 5: Add Window Trim
If y'all had casing to remove around the window here is when you tin can reattached around the window.
Step half-dozen: Final Touches
This is both the easiest and longest footstep for professional results. Depending on your detail state of affairs, you may demand to:
- Make full and smooth all blast holes with wood filler in wood areas.
- patch whatever dings in the drywall.
- Caulk around the edges of all the window trim and frame.
- Prime and pigment as needed to match the existing trim in the house.
In our case, the window trim under the sill had some gouges and dog chewing harm too. I elected to fill this particular piece as the edge cuts are non easy.

Expert Tips
- I have used a lot of wood filler and this is my favorite product. I thinned information technology out with a bit of h2o to get in the smaller areas.
- For filling this type of woods, I dearest these sponges because they accept edges that I can hands control and get into the ridges.
- Try to observe real forest products rather than the cardboard-like pressboard that new houses use. It is a much better product that is easier to work with and is less prone to harm and issues.
- If you would similar more than information on caulking, check out our footstep-by-step guide to Caulking baseboards.

LOOKING FOR More than SIMPLE Ways TO IMPROVE YOUR Home?
- The Easiest Way to Make Baseboards look Beautiful Again
- Make Basic Cabinets Look Expensive with Trim
- Building A Custom Closet
- How to Pigment Sometime Kitchen Cabinets
Well, at present that's over, the dining room makeover will look much more than finished. Information technology'southward hard to make a room inviting, cozy, and beautiful with eye sores such as these. If y'all desire to encounter our finished dining room makeover, check out our dwelling house tour tab with all of our before and after makeovers.
Ofttimes Asked Questions
How do you fix peeling paint on a window sill?
Scrape off any peeling pigment. Apply a paint stripper or sand with 120 grit sandpaper until smooth. Vacuum and wipe all dust off, then paint with two coats of durable paint.
Why do window sills rot?
Rot needs two things to happen: a affliction inducing bacteria or fungus and water. Although sloped, a windowsill is a horizontal shelf where water can accumulate. The first footstep to repairing rot is to remove whatsoever exposure to the source of h2o.
What finish is best for window sills?
A highly durable pigment or poly topcoat is essential for protecting a windowsill. Cheap paint often becomes gummy and items assault it can stick. Use a satin or semi-gloss paint that is UV resistant.
How much does it cost to supersede a window sill?
Whether interior or outside, materials price less than $fifty for wood window sills. If you have to hire a contractor, expect to pay boosted labor charges of $100-250. Both calculations presume at that place isn't more all-encompassing damage to the window or framing, which would increase costs.
Sign up below to receive updates including gratis printables, system tips, home comeback projects, recipes and more!
More Trim Tutorials
-
Adding Trim to an Isle -
Beautiful Baseboards -
How To Caulk A Bathtub -
Update Your Cabinets
PS I love seeing your creations! Exist sure to take a photo and tag#cravingcreative on Instagram! Y'all can as wellstay in touch with me through following me on Instagram, Pinterest, and Subscribing to the Newsletter!
-
Manus Saw or Jig Saw
- 1 Window Sill Board cut to length
- Wood Filler
- Nails two inch finishing nails or brad nails
- Trim Caulk
- Paint
- Drywall spackle
-
Cut the caulk line around both sides of the casing and the window sill itself. Drag a razor pocketknife acme to lesser to do this, making certain to go the full caulk line if you can.
-
Utilize a crowbar to pull out the casing from the drywall. If prying, make sure to utilise a brace confronting the wall and so you don't dent the drywall.
-
Use a prybar or chisel to slowly pry the sill up. A hammer besides helps. Endeavor to keep the sill in one slice so you can use it equally a model when cut the new sill.
-
Mensurate the sill area and utilize the one-time sill as a template if possible. Cutting the new sill to size. Dry fit several times as the walls is likely not be completely straight.
-
Use nails or brad nails to install the wood board into place ensuring that information technology is nailed into the framing below.
-
Reattach or replace the side casing and trim that was removed with nails or brad nails.
-
Complete the finishing of the window. Fill up and smooth all nail holes with wood filler and patch walls if necessary. Caulk around the edges of all the window trim and frame. Prime and paint as needed to lucifer the existing trim in the house.
General Tips
Source: https://www.cravingsomecreativity.com/replace-interior-window-sill-trim/
Posted by: lovellgeopers.blogspot.com
0 Response to "How To Replace A Rotted Interior Window Sill"
Post a Comment