Bi-Fold Door Sill

[GregH7799]

Hi all,

I've recently moved into a house with bifold doors - probably around 7-8 years old, no more than 10. The sill on the doors is looking quite tired (faded) and in a small strip (about a foot long max) it looks like some filler has come out and part of the wood has swelled as a result. This has meant that in the summer the door has scraped the wood a little and removed the finish.

Now, bearing in mind I'm far from an expert, my plan was to sand, fill and apply some wood stain/preserver. However, a friend has said (also no expert!) that the sill could be made of a composite material and I shouldn't sand, etc. I'd assumed it was a type of hardwood, although the doors themselves are composite.

Any ideas on how I would identify if composite and how I should treat if it is? (not sure if it'll help, but a couple of photos attached)

Thanks!

 

[Mr Chibs]

Doubt it’s composite, Looks like a hardwood cill, as you can see the end grain. I think I would fill it, sand and treat. Either stain the filler or get darker filler.

The damage is already done, as it should have been treated years back.

You could clad it in something like an aluminium sill, depending on size, that would protect it.

 

[GregH7799]

Hi, thanks for your reply and comments. Now to find the time to do it!

 

[Notch7]

does it have drainage holes going from track through cill to underside of cill? -if so get em cleaned out