Replacing failed DG sealed units

[petek]

The front windows on my son's house (in the Barnsley/Sheffield area) comprise a number of approx 7" sq sealed units in wooden frames. One of these units has failed and is misted up and he wants to replace it.

Does anyone know a supplier of replacement sealed units in this area?

The existing sealed units appear to be held in place with wooden beading on the exterior face and some unkown (at this point) sealant. Any tips on how to go about removing and replacing the sealed unit? What sealant to use, perimeter gap/spacers, etc?

TIA Pete K

[Tanner-'op]

petek,

a quick google of - Glaziers, Barnsley - gave 15 hits. Might be worth a try.

Sorry I can't be more specific, but that is not my local area.

Tanner-'op

[Dave Plowman (News)]

Any glass supplier will order them.

They'll also supply the correct 'putty'.

[Peter Scott]

Doing just that job myself for the first time.

Beading out first. I used a pry bar with a nail remover to wedge the beads off.

To get the units out I found that a large knife with a retractable blade was best. It needs to be the sort with 'snap'off' sections because it is thin and flexible. Cut around the inside with the blade bent slightly and pressed against the glass. You will feel when you've cut deeply enough because you can feel the wood. Then from the outside, cut in around the edges of the unit, again until you feel the wood. Make sure you not left any bits uncut. Then gently press the unit out. To clean up the rebate I used the slanted end of the same knife blade as a scraper.

There have been threads about how to refit into the silicone. One hint was to paint the rebate before refitting. I will be doing that.

Good luck and let us know how you get on.

Peter Scott