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Window Flashing

Window Flashing
The process of window flashing protects the water from seeping through the gaps and into the surface below. Explained in the following sections is the process of how to go about the same.
Medha Godbole
Window flashing is a process which prevents the water from seeping in through the gaps when there are adjoining building surfaces. It is installed around the windows, and is typically made of galvanized steel or aluminum. It needs to be installed prior to fitting in the siding on your house, and it needs to be durable, weather-resistant and suitable to the material surrounding the intended spot of flashing used in the construction. There are various types of flashing materials available - sheet metal, vinyl, and tape that you can choose from.

Installation Process

The tools required for this project are -
  • Safety Gear
  • Hammer
  • Nail Set
  • Tin Snips
  • Tape Measure
  • Bleach Solution
  • Rubber Gloves
  • Work Gloves
  • Towel
  • Spray Bottle
  • Pry Bar
  • Putty Knife
  • Nail Puller
  • Aluminum Flashing
Step 1
Pull off and remove all the nails along the upper edge of the window with the help of a nail puller. Then after you are done with the nails, pry the siding and loosen it a little bit. This will help you to install the window flashing under the siding.

Step 2
For scraping off the caulking which is present, use a putty knife. Follow that by mixing a water and bleach solution. Pour the solution in a spray bottle. Apply this solution to the casing to get rid of any debris which might be lodged there. Remember to wear gloves and safety glasses when carrying forth this task.

Step 3
Next, apply a silicone sealant along the window edge in a thin line. This is vital in order to prevent the water from entering the siding and casing.

Step 4
Then, measure the flashing (the new one which you are going to fix onto the window). Ensure that it overhangs around half an inch on each end. Do not forget to wear your gloves while cutting the same.

Step 5
Slide the flashing beneath the siding first. Follow that by nailing it through the existing holes.

Finally, you will have to sink the nails underneath the surface of the siding with the help of a nail set. The last thing to do is to fill the nail holes using wood putty and sand. But that cannot be done before the flashing application dries up.
Man with caulking gun
Carpenter Using a Nail Puller
Construction working tools