3C SealantsWood Repair 2-Part Filler 620ml – Long Lasting, Heavy Duty Wood Filler for Durable Repairs & Restoration Projects

Very good product. I have used it to repair some windows that were rotten. I managed to save all the windows which are over 100 years old. Repairing holes is straight forward, but more tricky where I needed to rebuild sections of window frame that had rotted away. Some of the corners were completely gone, no mortise or tenons left. I think these large repairs need Perspex to shutter the area being repaired. I unfortunately didn’t have any so had to build the corners up, shape them and then sand. I didn’t think it was going to work, but came out great. Hardens fairly quickly, however can’t be sanded until next day.Works in a standard silicone gun which is a massive bonus. When doing large repairs it doesn’t go very far, so far I’ve purchased 3 of them. Expensive but cheaper and quicker than having to machine new window frames. Needs the primer, I’ve used one primer set for 3 sets of the epoxy filler.

This stuff is great. A million miles from that horrid two part epoxy stuff that sets like concrete and won't ever smooth.Set time is realistically overnight but it can do any depth in one go and and is much easier to work once dried.It is expensive though. You'll make it go a lot further by using bits of wood as packing and/or as glue for splicing.

Great for sorting out rotten timbers when paired with a good wood hardener like Siramico.Beware if using in cooler temps as can take a long time to set.In summer 8 hours is about right and you can mould at about 5 hours if needed.Bit pricey but it really is the duck's nuts for a solid repair job.

I've found most of the more well known two-part tub fillers 'go off' far to quickly for the larger jobs - so when it came to repairing three, long, heavily damaged 80 year old window boards, I'd decided to try this 2-parter from 3C..WHAT a revelation.. using the ( solid, non essential but nice-to-have ) 'double barrel' gun, equal parts, A & B, are dispensed easily, mix readily & remain pleasantly workable for the duration, minimising waste & costs, all round..The longer cure time ( bumpf suggests 5-6 hrs & it is still tacky after 2 or 3 hrs ) lends itself to the larger repairs, but with the replaceable caps & air tight tubes, it's no problem to dispense as little or as much as you need..Workability is outstanding - fill & spread like ( non crunchy ) peanut butter with your favourite blade - a final pass, gives an near paintable finish, with minimal sanding ( the photo is next day, fully cured & unsanded )Initially, it would seem to be a fairly expensive solution - however, I'd suggest it easily pays for itself in terms of lack of wasted product & time repeatedly knocking up small batches of other well know tinned fillers..Highly recommended

Been using this product on a project at home and have to say it’s amazing stuff easy to mix easy to apply sands down easily and easy to paint over. Would be 5 start but the price is high good do with it be more competitive, I find myself having to use it sparingly and filling in with cheaper products that aren’t so good. Apart from the price I’d highly recommend

Excellent quality & solid final finishExpensive but worth it

When combined with the two part 3C Primer this product costs over £85. Although it is better than your average two-part filler, I found this product harder to work with than say EasyFlex 4 where intricate shapes needed to be formed. I used a range of spatulas, but just couldn’t get that finished look. Might be worth paying the extra for a proper epoxy filler.

Seems perfect for my rotten woodwork. Just want to know when you’ll restock it as I need more! 5*