How To Replace Casement Windows?


Casement windows look great in almost every home type and that’s just one of the reasons for its high popularity. It’s stunning, easy to use, low maintenance, and easy to replace or install. You don’t need a lot of technical expertise to handle a DIY replacement project. 

Although casement windows look unique and appear quite different from other window types, replacing them is very much similar. For those who are going to do it for the first time, here is a brief guide on how to replace casement windows. If anything goes wrong, get in touch with us for professional assistance in repair and installation.

Step 1: Plan, Measure, And Gather Supplies

Having the right set of tools can make a huge difference in a DIY project. Gather the following supplies for window replacement.

  • Safety glasses

  • Hammer

  • Waterproof shims

  • Gasket sealing tape

  • A level

  • Caulk gun

  • Screwdriver

  • Power drill or a power driver

  • Putty knife and a utility knife

  • A small pry bars

Step 2: Remove the Old Casement

Once you have gathered all the supplies, it is time to remove the old casement. It's best to have a friend or family member to help you carry the casement carefully. Use a small pry bar and hammer to remove all the nails carefully. Make proper arrangements for the disposal of the old unit as it has glass panels in it.

Step 3: Make the Window Opening Watertight

You are left with a window opening. The first step is to make this window opening watertight. It is essential to prevent water leakage between the window gasket and wall. Aluminum tape is very effective in securing the opening. Most of the DIY-errs use water seal gaskets for ease of installation. Roll out the materials and start from the bottom sill. Fix it till the top and make sure there are no gaps.

Step 4: Level the Opening

New shingles are to be installed on the sides and top so make sure you extend out the gasket edges. Make perfect corners by cutting the excess and folding it properly. The next step is to level the opening to ensure the window fits perfectly. 

Use a bubble level on the bottom sill to check the level. If it’s not right, raise the lower side with a small shim. Continue the process until all of the sides and top make a uniform opening. The preparation phase takes a long time but if you want seamless results, spend your energies in insulating and leveling the opening.  

Step 5: Install the Window Casement

Now is the time to bring the new casement window to the opening and fix it carefully. You will need the assistance of one or two people to adjust it into the nailing flange. While you are installing the window, make sure the shim hasn’t moved. Nail the window in its place.

Step 6: Caulk the Flanges

Once the window is secured, caulk the flanges to seal the edges. Whether you opt for wooden or Vinyl Casement Windows in Houston TX, caulking is essential to prevent your investment from mold and water damages.

Step 7: Interior Installation

Install the interior casing and then you are ready to paint and finish it. Hang molding and you are good to go. 

Still In Doubt? We Can Help!

Despite all the instructions provided, window installation can be a bit tricky. If you are finding it difficult to handle or just don’t have enough time to do it on your own, give us a call. We provide professional Casement Window Glass Replacement services and a lot more.

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