This guide will show you how to fix rotten wooden components of your window with epoxy. If you do it right you will no longer see that there has been wood rot! In this article you will read how you can easily fix your rotted window frame and what tools and materials you need.
First of all, you must thoroughly clean the rotted parts. Remove all rotten wood with a wood chisel and screwdriver until only good wood remains. After removing the rotten wood, ensure that the wood is properly cleaned and that all wood residue is removed.
If you are going to repair your window frame with epoxy, first make a mixture of epoxy resin with rapid hardener. You can then impregnate the places where you removed the rotten wood. You don't need a lot of resin for this. However, it is advisable not to make too little epoxy. Epoxy is very sensitive to deviations in the mixing ratio. Therefore, carefully weigh the parts of resin and hardener with kitchen scales and prepare at least 150 grams of resin (100 grams of epoxy and 50 grams of hardener).
Once you have thoroughly mixed the resin (A component) and the hardener (B component) together, you can use a small flat brush to apply the epoxy to the bare spots where you have chiseled away the rotten wood. Always use nitrile gloves when working with epoxy.
Once you have applied the epoxy, let the epoxy harden for about 1 to 2 hours, depending on the temperature. You can also choose to wait longer, but we recommend not waiting longer than 24 hours before taking the next steps. If you wait longer than 24 hours, the paste won't have a good chemical bond.
You have now impregnated the areas to be treated with epoxy for optimal adhesion. In this step we will prepare the epoxy glue or epoxy paste. We recommend using Variobond epoxy glue for this. You can apply this with a sealant gun or mix it yourself on a putty board. A cheaper alternative is to use the epoxy resin you previously used for impregnation, which you mix with cotton fibre. You can then use this to make a fillet. This is a cheaper solution but gives a coarser finish and will require more sanding.
When preparing the epoxy glue, make sure that you weigh both parts (A and B) and then mix them well. After mixing, you can apply the epoxy paste to the holes in the frame. Do this in stages and do not apply too much resin at once. Smooth the paste as best as possible and let the epoxy harden for at least 24 hours.
After filling the holes with epoxy paste, your rotten window frame is almost repaired. Once the epoxy has completely hardened, you can start finishing the whole thing. You can do this with a sander or simply by hand. Please sand with 120-180 grit.
After sanding the entire window frame, you can apply a primer and repaint the frame!
By properly implementing the above step-by-step plan, your window frame will look like new again and can last for years to come! Do you have any questions about the working method or the products used after reading this article? Feel free to contact our customer service team, via email, telephone or live chat!
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