Skew Bifold Door Wall

Hi there, we're getting a Bifold Door installed (corner door). The wall built to support this is skew (slanting downwards on the one side). It is a slow decline, but about 4cm - 4.5cm difference from right hand start to left hand end (over the course of a 5 meter corner). The builder is suggesting this is not a problem. they can just "stack" under the door. IF however the brick line is too obvious, they're suggesting knocking out some of the bricks and lifting them with packer shims... and mortaring around those. My question is. 1.) is this reasonable? To me it sounds like you're compromising the actual brick + mortar strength for an outside wall that should be holding a pretty heavy bifold door.

12 Answers

I don't know if it's the best answer, but in order not to destroy the wall at the bottom, we can add a support (eg wood or metal) at the top to straighten the door frame. Theoretically without seeing .... but practically on the spot I would surely find a way.
7th Nov 2023
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Blue & sky
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Hi there,

It is not advisable to install a bifold door on a slanted wall. Bifold doors require a level track to operate smoothly and properly. A slanted wall will cause the door to bind and sag, and could eventually damage the door or the track.

If you must install a bifold door on a slanted wall, you will need to shimming or furring strips to level the wall. This will involve removing some of the bricks and replacing them with shims or furring strips. This is a significant undertaking, and it is best to have a professional do it for you.

Here are some of the reasons why you should not install a bifold door on a slanted wall:

* **The door will not operate smoothly.** The slanted track will cause the door to bind and sag.
* **The door could be damaged.** The slanted track could put stress on the door and cause it to warp or break.
* **The track could be damaged.** The slanted track could bend or break.
* **The door will not look good.** The slanted door will look out of place and unprofessional.

If you are concerned about the brick line being too obvious, you can have the builder mortar over the shims or furring strips. This will give the wall a smooth, finished look.

Here are some additional tips for installing a bifold door on a slanted wall:

* **Use shims or furring strips that are the same thickness as the slant of the wall.** This will ensure that the wall is level.
* **Use shims or furring strips that are made of a durable material, such as wood or metal.** This will ensure that the shims or furring strips can support the weight of the door.
* **Make sure that the shims or furring strips are securely attached to the wall.** This will prevent the door from sagging or binding.

If you are not comfortable installing a bifold door on a slanted wall yourself, you should hire a professional to do it for you. A professional will be able to level the wall and install the door properly.

I hope this helps! Let me know if you have any other questions.
8th Nov 2023
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Abbeyroofline
39 Reviews, 95% Positive
If it’s face brick 40 to 50 is to much for me from one end to other if it’s render finish you can Angle grind the high side level to other end make it a perfect fit
7th Nov 2023
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The simple answer is the brickwork sounds poor and you will have issues when the bi-fold is fitted unless you intend to fit it horizontally level. Each door will have to be toe and healed to ensure the doors stay square and smooth running of the rollers. You can get away with 5-10mm but 45mm is a no-go if you have a completely level floor as it will look odd. I suggest removing a few courses of engineering bricks and laying them level. A few may need to be zipped down with a Stihl saw.
4th Dec 2023
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Both ways are perfectly fine to be done provided that any changes to the brickwork are given adequate time before becoming load bearing.
19th Dec 2023
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Bozgoru
0 Reviews
the wall must be straight first so that the door is straight, it is best to straighten the wall and then put the door
4th Dec 2023
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While using packer shims to adjust for a slightly skewed wall is a common practice, it's essential to ensure that the structural integrity of the wall is not compromised. If the brick line adjustment involves knocking out bricks and lifting them, it's crucial that the process is done carefully and professionally to maintain stability. Consult with the builder about the potential impact on structural strength and seek a second opinion if needed to ensure the solution is both effective and safe for supporting a bifold door.
4th Dec 2023
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No that’s good enough for the door you need proper concrete lentil to support the door.
18th Dec 2023
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No the brickwork should be toothed out on both returns and re done so is level and square to avoid operational problems with new bi folds. Reinforcement should be installed on altered brickwork too, maybe ties and definitely use stainless steel helical bars to tie to existing brickwork and strengthen
11th Jan 2024
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JointConstruction
2 Reviews, 100% Positive
A 4cm - 4.5cm hieght difference is quite substantial. Although this can be packed, I would recommend it is packed only of it can be covered with a suitable trim and any packing is of masonary or structural equivalent. Another aspect to consider would be to make sure no water ingress can occur.
18th Jan 2024
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Using packer shims to level the door frame is a common method to accommodate for minor variations in the wall surface. However, knocking out bricks and lifting them with packer shims can weaken the structural integrity of the wall, especially if it’s an exterior wall supporting a heavy bifold door.

If the decline in the wall is significant and compromises the stability of the door installation, it may be necessary to address the underlying issue rather than relying solely on shims and mortar. This could involve reinforcing the wall or adjusting the framing to ensure proper support for the door.
26th Mar 2024
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It is crucial to ensure that the support structure for the bifold door, especially a corner door, is sound and well-constructed. Addressing uneven walls by "stacking" under the door or using packer shims to adjust the brick line can be a common practice, provided it is carried out correctly and in line with building regulations. However, compromising the strength and stability of the wall should be avoided.

If you have concerns about the proposed approach, it is advisable to consult with a structural engineer or a qualified builder to assess the proposed solution and ensure that it will provide adequate support for the bifold door in the long term. Prioritizing the structural integrity of the wall is essential to avoid future issues with the installation or potential safety concerns.
22nd May 2024
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