Keithj
Member
- Messages
- 817
- Location
- Witnesham, Suffolk
There's an even worse scenario, Pford75.
When we bought this house, it had a roof of ugly concrete tiles (a relatively recent addition) - totally unsuitable and inappropriate. Our CO and the PC were very supportive of our plan to remove them and replace with pantiles. However, we then got a letter from Building Regulations to tell us that the tile work would make it a "new roof" which must comply with the 2011 heat insulation rules (Part L, I think it was). The on-cost would have been many thousands of pounds - Celotex between all timber joists, thermal blanket over the timbers, and more.
The fact that the walls are traditional Tudor laths with lime render, so not exactly heatproof, was not relevant.
Fortunately, the roof structure as built in 1500ish didn't provide a space to fit the Celotex, and in the end Building Regs agreed it could be omitted.
In general, LBC rules are "don't change anything" - plastic gutters there are, plastic gutters must remain. Crittall metal windows fitted years ago to replace period wooden ones - metal windows must remain. Most COs will readily agree to a proposal to replace with the more appropriate product as long as the "wrong" one isn't a significant feature in its own right.
When we bought this house, it had a roof of ugly concrete tiles (a relatively recent addition) - totally unsuitable and inappropriate. Our CO and the PC were very supportive of our plan to remove them and replace with pantiles. However, we then got a letter from Building Regulations to tell us that the tile work would make it a "new roof" which must comply with the 2011 heat insulation rules (Part L, I think it was). The on-cost would have been many thousands of pounds - Celotex between all timber joists, thermal blanket over the timbers, and more.
The fact that the walls are traditional Tudor laths with lime render, so not exactly heatproof, was not relevant.
Fortunately, the roof structure as built in 1500ish didn't provide a space to fit the Celotex, and in the end Building Regs agreed it could be omitted.
In general, LBC rules are "don't change anything" - plastic gutters there are, plastic gutters must remain. Crittall metal windows fitted years ago to replace period wooden ones - metal windows must remain. Most COs will readily agree to a proposal to replace with the more appropriate product as long as the "wrong" one isn't a significant feature in its own right.