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Problematic Sash Window

Tiresias

Nordic Pine
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Ok. First post (other than in welcome) on here and it is a problem.

And it is one of those ‘Well, I wouldn’t want to start from there’ type ones. In an ideal world I wouldn’t do it like this at all. However…

I have a bathroom that has been compromised when a lift shaft was out in to accommodate the old Lady when she got doddery on her pins. Late 70s I would reckon. The lift is not in use now (one of those H&C Homelifts with the unique ‘plummet’ feature because of the propensity of the gears to strip) but we may reinstate it soon.

Anyway, the window is now partially obscured and natural light gets into the bathroom via a sort of corridor around the back of the lift shaft. So:
DSC04877.jpg
Access is through here and here.
DSC04951.jpg
DSC04955.jpg
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So, a bit tight. (Top window is out, ‘cause I’m repairing it just now).
In plan it looks like this (apologies for the quality – I had a pencil, a pen and a ruler and no other drawing tools down here at the time):
Broughters bathroom 4.jpg
The two red lines are ventilation ducts stylishly done in grey 4 inch drain pipe. Which vent through the outer two panes of the upper sash. One through a clear plastic pane and one through a nailed on piece of plywood. Hmmm. Shrieks quality, don’t it.
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Yes, I know vents protruding through window are ghastly. But the wall is about 750mm thick, and other than escape tunnel Charlie described above we are talking 15m height or so of scaffold bridging a lower pitched roof. So, for a temporary solution I’m going to go with still taking ventilation through the sash. In the fulness of time I may do it differently, but, for this winter…

Now, I have taken out, repaired, reglazed and repainted the two sashes (photographs available if anybody is interested – I don’t think those windows had had any attention for 40-50 years, and the paint /putty was mostly non-existent, but the wood was solid. Amazing). All that time spent playing Tetris wasn’t wasted, they do actually fit through the under basin door.

Soooo.

1. I am going to replace the drainpipes with flexible (probably insulated) ducting. If I can, I will have both vents exiting in the same pane, hidden from view from the bathroom (where the lift shaft vent used to exit). Would the best way be a floating panel of marine ply painted and sealed into the existing glazing aperture with putty, or silicon, or some form of beading with a neoprene squish strip? It might need to come out again, you see.

2. Previously the two sash windows were prevented from moving in relation to each other by the good ol’ fashioned 4 inch nail through the stiles into the frame. Any reason why I can’t just put thumb screws through the meeting rail, so essentially the two sashes are a single unit, but easily separable?

3. Is it worth trying some form of heat recovery, rather than just a straight extractor? It’s cold on this hill, this window gets a lot of weather (we’ve had -15C in my memory, plus 70+ mph winds). But it’s just a very small room, and it is really only used for guests, or washing the hound. An in line fan would be about £60, a single room MVHR about double that, if it would work with ducting.

Oh, and before anyone says anything the listing chaps know about this and seem to accept that, unless I go bonkers, whatever I do will be better than it was.
 
Oh dear what a b4lls-up to have to contend with.
Shame you might need to re-instate the lift as my first thought would be to rip it out.
Heat recovery might work if you have a route for ducts without creating too much chaos but for a little used room is it worth it compared the say an electric towel rail when you have visitors or a wall mounted fan heater with switch off timer.

I cant imagine a problem with an upgraded 4" nail in the window. Not really worth much more sophistication when hardly anyone would see it.

Sympathies

Bob
 
Oh my goodness. That's almost a third world problem. Whoever inserted that lift needs a damned good thrashing.

I'm not completely clear as to whether or not the window serves any purpose now. If it wasn't listed I might have suggested filling in the window opening (in a removable way), leaving the repaired window standing ready in that little cubby hole. As it seems the building is listed, that won't be an option.

I don't see any advantage in inserting a heat recovery device in that circumstance. The recoverable ventilation heat losses from a small irregularly used bathroom would hardly justify the effort, let alone the money. Personally I'd consider insulating the inserted walls and hatch as best you can, and call it job-done. As it happens, the ghastly grey soil pipe is a more efficient duct than the purpose made duct you're about to insert...but as I said, the losses are so trivial as to not be worth worrying over.
 
That might be one of the wackiest things I've ever seen!

Could you fit Brighton Fastners on the sashes to lock them together? That may be a bit more expensive than nailing it though ;)
 
Thanks chaps. A sort of consensus emerges.

None of us thinks this was a good job.

It isn’t worth putting in a single room heat recovery fan.

I'm fine just attaching the two sashes together (it will be nicer than a nail, trust me).

So thanks for that.

Oh, and Trevanion, ‘wacky’ is almost precisely the word I keep muttering to myself every time I have to wriggle round the underside of the basin panelling and then squirm down the back of the lift shaft. Almost precisely.

Mind you, I have seen similar weird provision for natural light in bathrooms in New Town/Stockbridge tenements, in the corner flats, particularly where the frontages meet at an acute angle. Mind you those were original, not a 70s act of butchery…
 
Digressing slightly although within the theme of 'wacky'.

I visited a work colleague who lived in a terraced row of Georgian houses. He had a cellar and invited me down to have a look. Nice and dry and very roomy. He asked me to stand on top of a conveniently placed step-up and gently lift the 6" round glass disc in the ceiling and tell me what I could see.

"I can see a room with furniture in, a piano leg....ah, you haven't got a piano, have you ?"

Yup...his cellar extended well under next door.
 
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