Large span lintel

[mcjford]

I am putting in a 4790 bi fold door and need to find a cavity insulated lintel to fit the opening which would be 5090 minimum does anyone know where i can get one ?If not is there another way of bridging the gap to building regs ie steel beams etc?
Thanks

[welsh brickie]

search CATNIC lintols they will calculate the the load and supply to your specifications.

[xavi99]

You could also speak to your local steel fabricators. They usually employ an in house engineer who can calculate a steel beam size. This will usually be cheaper than any of the big lintol manufacturers such as Catnic, IG, Keystone, etc,.

However, you may have to install a cavity tray above to prevent damp penetration.

hth

xavi

[mcjford]

Cheers lads thankyou for your help.