Bi-Folding Exterior Doors and Lintels

[milbo1990]

Trying to put a detailed design together for an extension I'm planning in the near future and I've come unstuck on finding a suitable lintel to support the opening for our desired door set.

We want bi-folding doors, nice set in B&Q that's 4205mm, but I cannot find any lintels long enough. Best I've found so far is a 3600mm steel cavity lintel at Travis Perkins.

These bi-folding doors are pretty common now, so I'm guessing there's a simple solution which I've missed. Can anyone help?

Thanks in advance.

 

[limerockconstruction]

What load is it taking?

 

[saladdays]

How about this? http://www.catnic.com/lintels/CX50-100.aspx

 

[milbo1990]

How about this? http://www.catnic.com/lintels/CX50-100.aspx[/QUOTE]

Aha! That's exactly what I'm after...perhaps it's just not standard stock for most builders merchants in these lengths.

 

[milbo1990]

What load is it taking?

Not calculated yet, but it's not much because it's a single storey extension and there'll only be a few courses above the lintel.

 

[limerockconstruction]

Its not so much about the couple of courses, but potential loads of the roof - however, if you call Catnic tech department they will be able to clarify for you straight away. Its a reasonably big span..