- Joined
- 14 Sep 2015
- Messages
- 2
- Reaction score
- 0
- Country
Hi all,
I live in a mid terraced house which has an extension with a flat roof which I would like to convert to a lean to roof with two roof windows approximately 150mm by 100mm.
To my knowledge the max span of a lean to roof is 2.4 metres but what I want would exceed that by a metre or so. approximate dimensions of pitch would be would be 3500mm width 938 mm height and a span of 3620 mm making it a 15 degree slope.
I've got 3 decent (i think) quotes so far but none have address the issue of the max span as i hear it can cause sagging. I was considering doing it myself until i found out about the 2.4 metre issue.
The questions i have are:
should I be concerned about the builders not addressing the 2.4 metre issue?
is 2.4 in fact the maximum span for a lean to roof? if not is it something I could do with a span of 3620 mm and would that be done in a traditional way?
If i could do it myself what would be the suggested rafter sizes?
Any info would be greatley appreciated.
I live in a mid terraced house which has an extension with a flat roof which I would like to convert to a lean to roof with two roof windows approximately 150mm by 100mm.
To my knowledge the max span of a lean to roof is 2.4 metres but what I want would exceed that by a metre or so. approximate dimensions of pitch would be would be 3500mm width 938 mm height and a span of 3620 mm making it a 15 degree slope.
I've got 3 decent (i think) quotes so far but none have address the issue of the max span as i hear it can cause sagging. I was considering doing it myself until i found out about the 2.4 metre issue.
The questions i have are:
should I be concerned about the builders not addressing the 2.4 metre issue?
is 2.4 in fact the maximum span for a lean to roof? if not is it something I could do with a span of 3620 mm and would that be done in a traditional way?
If i could do it myself what would be the suggested rafter sizes?
Any info would be greatley appreciated.