5 meter extension pitched roof?

[Tommo2482]

Hi, looking for a bit of advice - I've done a 3m and a 4m extension before and used a standard pitched roof from the house - the pitch and the span was just within regulation for the 4m extension.

The question is now I'm planning a 5m extension on my new house - what would be the cheapest and easiest way to do this as obviously the span exceeds the maximum for timber joists.

Any help appreciated !

[ayjay]

Hi, looking for a bit of advice - I've done a 3m and a 4m extension before and used a standard pitched roof from the house - the pitch and the span was just within regulation for the 4m extension.

The question is now I'm planning a 5m extension on my new house - what would be the cheapest and easiest way to do this as obviously the span exceeds the maximum for timber joists.

Any help appreciated !

Use larger timber - (roof timbers are rafters, joists are laid level for floors), I've used both joists and rafters in over 7m spans before now so the span is not a problem with the correct sized timber.

[Tommo2482]

Thanks for the advice, would I then need a steel purlin underneath ( the extension is 8m wide so timber won't do)?

[steviejoiner74]

Can you not get trusses made from a truss manufacturing company? They are all engineered,made for you and light and easy to install.

[Bob225]

iirc the min pitch is 13º and a max of a 150mm head lap

what sort of tile ? cement, clay or slate ? BC with usually be ok with a minor spec change as long as you not in a conservation area

both Marley and Redland have the specs on there site most tiles are 15º or greater