ASHP & triple glazing

[Crastney]

quick google search


we're in Norwich - 1900s ish house.

we've still got single glazed on the back main room, the ceilings are high, so it's quite a bit of glass - wooden frames. It's the coldest room in the house as it never gets any sun, due to the rear extensions on either side.
I added a single glazed plastic sheet solution, which uses metal strip attached to the window frames, and magnetic strip attached to the plastic sheet, and it's fully removable, but makes such a difference, noise and heat loss wise. some of it has come loose and I need to redo it, but the wife is now using that room as an office and has her desk right in front of the widows so I need to diarise a time to move everything around and get to the window to do some glueing. we've turned the heater down in that room since adding the secondary glazing!
(which reminds me I need to turn the heating off the scheduled timer now it's getting warmer)

the secondary glazing was easily DIY-able, and reasonably cost effective. I measured each framed window, had the clear plastic cut to size, measured the total perimeters and ordered enough of the magnetic/steel edging tape. The windows are on the larger size so I ordered thicker acrylic to deal with the larger size, and not wanting to put in reinforcing bars.

[Richard77]

Richard77

If you hanker after 3g have you considered the tertiary glazing options

Moxi

Thanks Moxi... Never heard of that.

I'll be honest though, changing the glazing is probably going to be years away and quite a way down on the list of stuff to do on this house.

Whether it would make more sense to be higher I don't know. But for now:

1. Sort gable wall out.
2. Insulate Insulate Insulate (ewi or internally).
3. More solar.
4. Front garden wall/gate.
5. Fencing down side of house.
6. Back of garden area.
7. Glazing?

Probably best to sell, find some land and build a new house. Would love to do that actually.... I'm probably the only one in the house though who would unfortunately. So probably a no-go.

[Richard77]

I am always weary to get tradespeople in nowadays after cowboy builders nearly brought the whole back of the house down when creating an opening for bi-folds and removing a chimney breast a few years back.

Still trying to get back on track after that...

Cowboys everywhere unfortunately. I can imagine there are plenty fitting windows, as it's very "diyable". YouTube is a godsend and a curse sometimes. Watch a few videos, buy a van and next thing you know they are doing jobs on people's houses!

I've always hated getting trades in, as they always seem to do something wrong, I'm very hands on, there's not much i haven't done. My brother and I removed about 3.5 meters from the back of my house to fit bi-folds, no issues apart from the shear hard work fitting goal post steel work down to the foundations and all signed off.

About 30 years ago just after I met my wife, she had double glazing fitted to the house shed just bought, the fitter did such a poor job, I don't think he used a single screw just foamed them in, but he didn't even clean the dust and dirt off, or make the brickwork moist. I think he walked off the job early one day as my Mrs ripped into him.

It's shocking how bad some of them are out there and it's quite scary what damage they can do.

We have had so many cowboys work on this house, I'm surprised it's still standing. It's a minefield out there now. I try to do what little I can myself (not much due to my lack of skills and full time working). Obviously for the cost benefits, but also due to the lack of trust I have in the quality/morals of a lot of "tradespeople" at the moment.

[Joeboy]

Even with doors and windows open we have went from 16.8 to 17.3 degs solar gain only. I am interested to see how well the home retains those gains tonight when the lads leave.

The temperature sensor that is reading that 17.3 is in the centre of the house, unwindowed and three rooms away from Southern aspect.

Here's a couple of a finished window so you can see their finishing standard. I've gotta admit, I'm impressed.






In this one I'm just showing off, no doubt!

[Richard77]

Nice triple glazing flex with the 3 glass cert marks in the corner!

Yeah looks a really high quality finish.

[Joeboy]

It is 17.10 and the whole house is sitting at 17.5degs. I'd normally have knocked on some form of heating by now. Probably a very, very low running wbs. Don't need it. Don't need the ashp apparently either.

Although I did inadvertently knock it on for 10 minutes or so. Flow temp got up to 25degs. Total accident but I'm annoyed at myself.

I can only assume that as the whole house was brought up to temp by the ashp over the last few months that I'm enjoying it's benefits?

The remaining big 2g units (3 of) are obviously leaking heat but right now you wouldn't know it.

I miss the flames but I'll resist and see what temps are at later. If need be, I'll bring on the ashp at 0.2 heat curve. Unknown Territory for sure.

[NoraBatty]

Shame about the issues but the new units look fabulous Joe.
Have they taken all the old units away?
Just had a thought that it may be beneficial to think about a window for the new shed build, so if you have some laying around im happy to make a donation and take 1 or two off of your hands.

[Joeboy]

Shame about the issues but the new units look fabulous Joe.
Have they taken all the old units away?
Just had a thought that it may be beneficial to think about a window for the new shed build, so if you have some laying around im happy to make a donation and take 1 or two off of your hands.

Thanks Nora, the old windows are away. They cut the frames in half in situ and collapse them outward. I had thought about it for the vanport but shouldn't need it as open sided, sorry.

The vanport is on its way.


Overnight I tried HP at 0.2 heat curve, too low at the moment so it's back up to 0.25.

No wbs on last night, low heat pump. Centre of house is 16.5 degs, North facing 3g rooms are at 15.8 and Southfacing big lounge with 2g remaining in majority is at 11.7 degs with no solar gain and 6 degs outdoors.

That's as clean and uninfluenced a comparison test as I can run 4.1deg difference on bead edge.

It's the surface area of leakage that I find difficult to qualify in my mind. Is there a way to work out a heat loss of 4.1degs over 28 mtr sq in kWh? .

Nuts eh? Just constantly pissing away to atmosphere.

[Joeboy]

Rough as anything for today temps and if fully installed.

Old system on average for age
3.9x 28x 10.5x 24 = 27.518kWh loss per day

New hotness
0.7x 28x 10.5x 24 = 4.914kWh Loss per day

22.6kWh difference per day.



There is a valid thought that with the heat pump installation I shouldn't be bothered and left it at that.

Let's say I achieve a 1 year scop of 5. That loss figure on the old glazing system only cost me 4.52kWh of power bought via the ashp to negate the losses.

With the batteries, overnight charging and solar days factored in.... that figure in £'s drops to £0.31 per day dropping to zero then into fully negative via export financial returns.

Significantly over 150 years payback.

Funny that, never bothered to work that out until this morning. Although I was very aware of it.

It's obviously not about the financial roi for these works. It's about comfort as we live our lives manifested in a constant temperature, no cold drafts and no noise. And being fully honest, it's about control.

All four of us in the family are control freaks but in a nice way. We won't try and control you but we will exert ourselves to ensure that we win. This is now manifested in snow?, gales? Thunder & lightning? Sorry, didn't notice.

No1 son was round last night and approves as does daughterly via photos sent to Edinburgh. SWMBO will very likely say no to the outward opening doors on her return tomorrow/Monday but it's only a £200 new frame hit to the company as the glass, handles etc are transferable. I'm looking forward to phase two but will enjoy the gains and chance to compare until.then.

[Joeboy]

Almost finally,

Wandering about waiting for the kettle to boil and I can say that the two Northern facing rooms are now the most comfortable by a mile. They both had insulation work, 3g and are served by the ashp. They are complete units.

Essentially went from the worst to being the best and a window of what is to come throughout.