This Old House general contractor Tom Silva saves a rotting window with a twopart epoxy filler. (See below or a shopping list and tools.)

SUBSCRIBE to This Old House: http://bit.ly/SubscribeThisOldHouse

Tom showed Kevin how to repair a rotten windowsill and trim using a twopart "architectural" epoxy. The epoxy is designed to be flexible so that it will not separate from the wood as the wood expands and contracts with changes in humidity. Tom first grinded out the soft, decayed wood using a router. Next, he applied a bonding agent to ensure a good bond between the epoxy and the wood. Tom then traced the profile of the window trim onto a plastic putty knife and cut the knife to match the profile. Tom then dispensed the twopart epoxy using a special caulking gun onto the piece of plastic and mixed the two parts together. He then applied the epoxy to the windowsill and trim using his putty knives. Back in the loft, Tom recommended another application of epoxy for "touch up" and a light sanding before applying paint.

Shopping List for How to Fix Rotted Wood with Epoxy:
twopart epoxy [https://amzn.to/2wG6uL9], used to rebuild rotted areas
painter's tape [https://amzn.to/2MyRA44], for masking off area around the repair
long, straight board, used as a straightedge [https://amzn.to/2WuO6V7]. Lexan panel [https://amzn.to/2QWpvCv], for use as an easel for mixing epoxy
100and 120grit sandpaper [https://amzn.to/2K1tJbj], used to smooth hardened epoxy
primer [https://amzn.to/2MApYf3] and paint [https://amzn.to/2IuReqd], used to finish the repair

Tools for How to Fix Rotted Wood with Epoxy:
router [https://amzn.to/2Ip5Gjn] or cutout tool fitted with a Vshaped bit [https://amzn.to/2MB2wyp], used to grind out rotted wood
paint scraper [https://amzn.to/2Wsiakc], used for scraping off paint from wood surfaces
plastic putty knives [https://amzn.to/2ItxmDw], used to apply epoxy
aviation snips [https://amzn.to/2MyId4q], used for cutting profile of wood trim into plastic putty knife
doublebarrel caulking gun [https://amzn.to/2XzlgPJ], used to dispense twopart epoxy
oneandahalf inch paintbrush [https://amzn.to/2QWUJct]
1inchwide paintbrush [https://amzn.to/2Wp7wWm], used to apply bonding agent to wood
3inch paintbrush [https://amzn.to/2wHO6BD], used to apply primer and paint

Twopart architectural epoxy for repairing rotten wood manufactured by Advanced Repair Technology, Inc. [http://www.advancedrepair.com/]

About Ask This Old House TV:
Homeowners have a virtual truckload of questions for us on smaller projects, and we're ready to answer. Ask This Old House solves the steady stream of home improvement problems faced by our viewers—and we make house calls! Ask This Old House features some familiar faces from This Old House, including Kevin O'Connor, general contractor Tom Silva, plumbing and heating expert Richard Trethewey, and landscape contractor Roger Cook.

Looking for more step by step guidance on how to complete projects around the house? Join This Old House Insider to stream over 1,000 episodes commercialfree.
https://bit.ly/2GPiYbH
 
Plus, download our app for streaming full episodes to your connected TV, phone or tablet:
https://bit.ly/34RYEP5
  
Plus, download our FREE app for fullepisode streaming to your connected TV, phone or tablet: https://www.thisoldhouse.com/pages/st...

Follow This Old House and Ask This Old House:
Facebook: http://bit.ly/ThisOldHouseFB
Twitter: http://bit.ly/AskTOHTwitter
Pinterest: http://bit.ly/ThisOldHousePinterest
Instagram: http://bit.ly/AskTOHIG

For more on This Old House and Ask This Old House, visit us at: http://bit.ly/ThisOldHouseWebsite

How to Fix Rotted Wood with Epoxy | This Old House
   / thisoldhouse