Double glazing replacement

Numb_fingers

Roughly how much would it take to replace these windows in white pvc? - excluding porch window - in Merseyside area?

FreeBear

The bays are going to count as four windows each, and you'll want support posts between each section. Maybe £6-7K ?

Judging by the style of the house, I'd hazard a guess that it is a prewar build - You may need lintels inserted above each window to support the outer leaf. That will bump up the cost if you do.

Numb_fingers

I don't know if there is already lintels above the bay windows, if they are not already there is there a requirement to have them on a new install, should the installer suggest/insistt they be added?

I know the extension window has a thin metal lintel, but looking a bit rusty now 

BarelySentientAI

Numb_fingers said:

I don't know if there is already lintels above the bay windows, if they are not already there is there a requirement to have them on a new install, should the installer suggest/insistt they be added?

I know the extension window has a thin metal lintel, but looking a bit rusty now 

The "requirement" is that the wall might fall down if they're not there.

Vortigern

Numb_fingers said:

I don't know if there is already lintels above the bay windows, if they are not already there is there a requirement to have them on a new install, should the installer suggest/insistt they be added?

I know the extension window has a thin metal lintel, but looking a bit rusty now 

The frames of the lower bay windows could be supporting the upper bay.  Do you know what's behind the render?  My parents had problems with UPVC replacements of their original bay windows. The "wall" between upper and lower windows was just tiles hung on a wood frame, plasterboarded inside.

That thin metal lintel is more substantial than you think, the greater part of it is concealed within the cavity between the outer and inner walls.

FreeBear

BarelySentientAI said:

Numb_fingers said:

I don't know if there is already lintels above the bay windows, if they are not already there is there a requirement to have them on a new install, should the installer suggest/insistt they be added?

I know the extension window has a thin metal lintel, but looking a bit rusty now 

The "requirement" is that the wall might fall down if they're not there.

Unlikely that the wall would fall down. What happens is the brickwork starts to drop giving tell tail signs of staircase cracks above in the shape of a pyramid.

stuart45

Numb_fingers said:

I don't know if there is already lintels above the bay windows, if they are not already there is there a requirement to have them on a new install, should the installer suggest/insistt they be added?

I know the extension window has a thin metal lintel, but looking a bit rusty now 

They didn't use lintels on that type of bay back then. The timber windows supported the weight from above, which was normally a timber frame, or single skin of brickwork. Nowadays there's lintels like Catnic specially designed to support cavity walls over a bay.
When a timber bay is replaced with a plastic one the fitters should use bay jacks to support above. 

Goddo

We live on The Wirral and had ours done by John Knight Glass might be worth sending them an email, they should be able to help you out with a realistic price. They did a great job for us.