Among a number of issues causing ultimate frustration during our extension project, this one remains particularly tricky...
The fitting of our bifolds took place on agreed measurements before screed and tiles were put down. The end result is the weather track sticking out over the floor tiles by at least 20mm when the bifolds are fully open. This is also way off compare to the floor/tracks I was shown in their showroom.
The story in brief, building contractor asked to order the bifolds but the screed was not laid down at the time. When the supply and fitting company surveyor turned up he was adamant I will need to sign off on the finished floor levels for them to process the order. The builder argued it was their job to take reference from the house floor levels as he would match to that. Waiting for the screed would have generated serious setbacks to the project. I don't know what would have been the standard.
Since this was an important investment I requested they liaise together to ensure the height is correct. The builder used a cross level laser to provide a level on the shell blocks while the surveyor carried out measurements of the opening, lintel etc. I received an email from the bifolds company with 1 millimetre precision heights to sign off, involving track height from the lintel of the opening, the screed and the floor thickness. I double checked with the builder and once everyone was happy we signed off. After all I had no means of checking this any further myself.
The doors were fitted a couple of weeks later, a month later the screed and tiles were down. Once the tiles were in the offset was more than evident. The tiler even said he could not compensate more for the lip and his floor is perfectly level with the existing house floor.
I put a significant amount of time into revisiting the agreed heights and luckily have a number of photos from the fitting. Checking both on the interior and exterior of the track at this point I am 100% confident the entire bifold system was fitted higher than agreed by an offset of 15~20mm. I have no access to the details passed on to the fitter but it appears too many spacers were used on the underside of the track, lifting the whole thing too high. The lintel position is always the key reference to all the heights. The tiled floor height from the lintel underside matches height agreed to within 4-5mm, so the issue falls entirely on the bifold fitting.
The bifolds company argued they fitted everything as agreed --not, I asked them to come and survey about a month ago but still chasing up. Unfortunately the work was paid before I had the chance to realise the problem. I understand this is logistically impossible to fix now as the cost and damage involved is over the top.
But is such margin of error acceptable for this type of product?!
/end of rant
The fitting of our bifolds took place on agreed measurements before screed and tiles were put down. The end result is the weather track sticking out over the floor tiles by at least 20mm when the bifolds are fully open. This is also way off compare to the floor/tracks I was shown in their showroom.
The story in brief, building contractor asked to order the bifolds but the screed was not laid down at the time. When the supply and fitting company surveyor turned up he was adamant I will need to sign off on the finished floor levels for them to process the order. The builder argued it was their job to take reference from the house floor levels as he would match to that. Waiting for the screed would have generated serious setbacks to the project. I don't know what would have been the standard.
Since this was an important investment I requested they liaise together to ensure the height is correct. The builder used a cross level laser to provide a level on the shell blocks while the surveyor carried out measurements of the opening, lintel etc. I received an email from the bifolds company with 1 millimetre precision heights to sign off, involving track height from the lintel of the opening, the screed and the floor thickness. I double checked with the builder and once everyone was happy we signed off. After all I had no means of checking this any further myself.
The doors were fitted a couple of weeks later, a month later the screed and tiles were down. Once the tiles were in the offset was more than evident. The tiler even said he could not compensate more for the lip and his floor is perfectly level with the existing house floor.
I put a significant amount of time into revisiting the agreed heights and luckily have a number of photos from the fitting. Checking both on the interior and exterior of the track at this point I am 100% confident the entire bifold system was fitted higher than agreed by an offset of 15~20mm. I have no access to the details passed on to the fitter but it appears too many spacers were used on the underside of the track, lifting the whole thing too high. The lintel position is always the key reference to all the heights. The tiled floor height from the lintel underside matches height agreed to within 4-5mm, so the issue falls entirely on the bifold fitting.
The bifolds company argued they fitted everything as agreed --not, I asked them to come and survey about a month ago but still chasing up. Unfortunately the work was paid before I had the chance to realise the problem. I understand this is logistically impossible to fix now as the cost and damage involved is over the top.
But is such margin of error acceptable for this type of product?!
/end of rant
