Replacing single pane windows in 35y/o house

NeptunesMoon

I'm looking for a recommendation on a company to replace the windows in my mams house.

The windows are approximately:

1 of 1.5x1.5m
3 of 1.5x1m
2 of 1.8x2.5m
2 of 1.5x2m

there's also the front and back door, would it be pointless getting the windows done without the doors done too?

I've done a little research and seems triple glaze is the best option in terms of heat retention although it would let in less light. Would this be a dramatic difference to single pane? The house is quite bright with the windows being big compared to the room size, but brightness is important.

I've seen it mentioned I should be looking for a U rating of 0.8 I think it was. Would almost all the triple glaze windows have the argon gas in them too or is this something you need to make sure of before agreeing anything?

As it's going to be my mam dealing with them I want to ensure it's a decent company who will do it right and no chancers or cowboys trying to trick my mam, but at the same time she's going to be very restricted budget wise so it needs to be quality work as it's a big cost.

Also, any rough guesses on the cost for the above?

cheers

cpoh1

A bit of perspective with triple/double glazed windows - the difference in u values is about 0.4-0.6.

Now consider your mums house, how well insulated is it? The house is old, has it been drylined, externally insulated, attic etc. What is the air tightness like?

All the above issues will far outstrip the value in going triple glazing over double. Unless the cost is insignificant for the upgrade to triple I wouldnt bother.

Drift

My understanding is that there's not a huge difference in price for double vs. triple these days. I think most manufacturers use the same frames for both so essentially the only price difference is the double glazing glass unit vs the triple glazing glass unit. Most suppliers will give you a quote for both OP.

But as cpoh1 says - if the difference is significant you won't notice the benefits in an old house.

People might be able to pm you recommendations if you say what part of the country you are in.

BryanF

In a retrofit senario assuming this a budget job and no other major works are being done- consider double glazing with overall u-value of 1.2wm2k or better this will exclude many of the Cowboys out there.

NeptunesMoon

cheers, so would I best off just getting triple then by the sounds of it?

the house has had a bit of work recently such as insulation and cavity wall insulation, so I think windows would be the next step?