craig

Sh!te, get an independent surveyor. They're Scottish suppliers/installers, they "should" know 90% of everything in Scotland goes in behind the ingo (check reveal). That tells you everything you need to know. He is of course correct. Stand your ground, they're obviously not accepting responsibility or saying we've ****ed up, these are the options available and our preferred solution is x. Is this acceptable?

uPVC not really my field tbh but the likes of AluPlast are good profiles but like most profiles, only as good as the manufacturer that makes the window. Edit: look for how the windows opens/closes, welds of the corners, how many gaskets (2 good, 3 better). Uf value (frame), if they try upsell you to triple for better performance on a sh!te frame. A Uf in region of 1 to 1.2 would be good enough but the lower the better.

What did they say regarding measurements and unit sizes?

It’s a relatively easy fix but it does mean building out the opening a little further externally and internally. In the grand scheme of things, it’s 40mm total in width/height. Once you pack out, you’ll never know. I’d be asking them to cover the costs of the work and recompense for the inconvenience. Once done, you’ll have the same result.

It's exactly what they have done.

Call them before it goes any further and have a discussion with them, I don't know any window supplier or manufacturer that recommends a 30mm tolerance. It's an expensive **** up tbh.

There is no way they allow a tolerance of 30mm all around, but, stranger things happen. Ask them and check the other openings and the tolerances before doing so. Reality bites, can you live with it? Yeah probably, is it what you wanted? No. I would personally say live with it and ask for some recompense. Let's say 20% of the cost of the window and expect 10% of the cost back. To be honest, you could reject it and get into a disagreement about it & a fair bit of going back and forth, getting nowhere fast. Is it worth the headache?

Was he wearing a blindfold when he measured? 10mm all around is all you need, that window is too small for the opening.

That’s putty, just been painted over.

Just to add, the units are not 8mm, it is still a double-glazed unit. Fineo vacuum works similar to how laminated glass works. Two panes of glass sandwiched between a lamination layer. Instead of lamination, it is vacuum sealed (0.1mm gap between the two panes). The unit can be 22mm to 34mm.

It's by AGC glass, so your good.

External Venetians? The guide rail will have a stopper at bottom at a fixed place (most likely). If you want them lower, you can reposition but you’ll likely need to reset (train) the new position and may not have required slats to go further. Basically put, the stop position is predetermined.

With MBC, they generally eat the tolerance but not always. Sometimes we will with MBC. Most others it will need to be us that eat the tolerance.

Anything with 300mm of a door should be. However, Pas 24 will generally be all ground floor windows and any that are easily accessible from ground.

To much emphasis is placed on the acoustic values and it’s generally the glass that is rated and not the unit. That being said, most ignore the most important aspect. That is how sound travels. Sound is like water, it’ll find a way. That’s why a very important factor is how the window is installed and the materials used. If they just used PU foam for example, that will have lots of pockets of air. Having the outside aspects around the window filled with a Compriband seriously reduces the noise levels. Noise doesn’t just travel through the window but around the window. Noise will also travel through the ground and up through the floor and through walls etc. Very good idea to get a good dB level of glass but installation of that unit is paramount to it’s success.

Looks good to me 👍

Safety glazing should be inner and outer, no current regs re triple glazing. Yes, regarding middle pane and thermal stress.

An excel sheet with the sizes quantities and types is usually good enough, window schedules are usually best and take away any ambiguity. If you can also specify what windows are below 800mm from FFL that will help, with any specific security requirements (i.e. SBD/Pas24, Emergency escape windows). The one thing to look out for with your quote is glazing (especially triple). Look out for the middle pane of glass being float glass and those that toughen the middle pane (more so on South East to South West windows). We did this with one of our suppliers for a while to match everyone else's price as it's very competitive and to be honest, you all like to do cost comparisons on m2 prices and it can be the difference between winning or losing a job. However, it's important to note that this is the number one way to save costs but it can cost you in the long term if it breaks (whether that be from slamming shut, thermal stress, or thermal fractures) the bill for this is left with you. We always did this with our Austrian supplier but not with our other suppliers - a lesson has been learnt.

It's a Gutmann window , manufactured in one of the Baltic states as Gutmann do not manufacture them. Gutmann is a good company and we deal with them and use some of their products. https://www.gutmann.de/en/building-systems/products-1.html

That’s a different kettle of fish, but not to dissimilar. Only difference is responsibility falls onto who ordered and measured, install wise you can only fit what you’ve been asked to fit. If it doesn’t then cost for lost earnings etc. would/should have been agreed.

Honestly? Every job requires a return and anyone telling you otherwise for a new build is being disingenuous with the truth. At least one return is required. However, that doesn't mean that the installation, of windows, doors, and openings, is wrong or not ready. It just means our install teams perform service calls within the 1st year (at least we allow for it anyway) and the client can choose whether it is something they want. However, you will find that building movement/settlement requires adjustments; if not taken, it's chargeable once the installation has been completed and signed off. "If" the doors don't fit, then why? What has caused the issue, is it the product size? If yes, is it our fault? If yes find a solution if available and address it with agreement from the client/contractor and foot the bill. Has it been the install team, have they incorrectly installed at the wrong height/position? If yes, then they foot the bill and re-attend. "if" it is building related etc. and there is nothing we can do, advise the client/contractor of the problem and what needs to be done. Move on to the next item and continue. If it doesn't add extra time (i.e. the install team have 5 days allowed, 2 days to erect/install a large sliding door, for example, 2 days for windows, then install all the windows) if in 3 days it's not ready. Then it will require a return visit. That will incur additional costs for travel and accommodation and potentially an extra day, and then the client/contractor will have to foot the bill for it. Proportion for wasted time, no. Time shouldn't be wasted, the site and installers should be ready for the installation of the windows and doors if any time is wasted it's generally due to the site not being ready but it also can be a result that the delivery hasn't turned up when requested. An example, if 5 days install is allowed, it's actually only 4, 1 day of that is for travel to the site (distance dependent) and offload/distribution. If it is delivery that has been delayed, the haulier foots the bill. However, we are pretty decent with hauliers and if any delays we know 2 or 3 days in advance and can plan ahead. It has happened a few times now with delays at customs.

How many people? The sliding doors can take a day to fit, they can be relatively straight forward especially if typical UK sliding doors and not lift and slide and as a result less than a day. The 2 doors should take no more than a couple of hours. I'd send 3 guys for that personally and they'd have everything done in a day (if products already on site, not having to offload etc.). £350 per man per day. Others charge per item, i.e. a door could be £150, sliding door £250.00+. Is any lifting equipment included, materials, travel, accommodation etc? £2K sounds steep but it depends on what has and hasn't been included.

The window supplier should be checking the wind data for your area on large items (especially when coupled), installation position/detail is generally set out on drawings by the architect and finessed by the supplier/installer. Sizes on new builds are based on the known structural opening, usually taken from as-built or confirmed frame sizes for example. Tolerance requirements are different on different windows/suppliers but a rule of thumb is 5mm or 10mm.

Being generous here, 16 windows at £1.5k each (some will be higher, others lower), £24K, £8k for your doors, £32K. 2 men x 4 days @ £700 (3 days install, 1 day offload and setting out), £2.8K excluding travel call that £200, accommodation £250 a night, call that £1K and delivery £2K. I would say it should be around £36/£38K, £44.5K sounds a bit steep without seeing schedule/quote, for 19 items to be honest.

Assa Abloy, model DC840a for the concealed option. https://www.assaabloy.com/ee/en/solutions/products/door-closers/concealed-door-closers-/assa-abloy-dc840