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Hi team,
I have an east-facing awning window and its sill needs a good level of attention. My goal is to restore it without having to replace it(full or partial)
Please review the photos.
I have reviewed previous articles in the forum and understand that the general approach is to:
- remove as much rotten wood as possible
- treat the surface with the wood hardener
- fill any void/gap with external-grade wood filler
- prep surface
- undercoat
- top coat with water enamel paint
I have previously tried to repair the same section using builders bog & low sheen Weathershield and ended up with paint chipping off (Some of the photos show this)
Do you think this happened because I skipped the process to remove rotten wood & harden its surface?
Secondly, is it still advisable to fill the groove with the bog only after hardening the surface? I think I have already sanded enough.
I realise that I may need to trim off the bottom of the jamb/sash using the multi-tool, chisel, etc and refill the space with filler, etc.
Thank you in advance.
Welcome to the Bunnings Workshop community @hmukai. It's brilliant to have you join us, and many thanks for your question about repairing a window.
It sounds like you have the method down pat. It's a bit hard to tell why you previous repair has failed. I suspect it was likely due to the window scrubbing on the repaired area when opening and closing. I can't see any other reason why the Builder's Bog would be chipped out like that. Ensure there is enough room, at least a few millimetres. Trimming/sanding the edge of the window frame might be needed to establish this room.
Weathershield is a softish paint whereas an enamel is much stronger.
I would suggest filling areas after you have hardened the timber.
Please let me know if you have any questions.
Mitchell
