- Joined
- 26 Oct 2021
- Messages
- 4
- Reaction score
- 0
- Country
Hi All
We are looking at putting in a log cabin/summer house in our garden, which is approx 7.7m wide. We had a design done for a building that is 6m wide (and 3.95m deep) and so it cannot sit 1m away from the side boundaries and is obviously made of combustible materials (56mm logs).
When we asked about building regs, the company stated:
Does applying HR Prof really make wood be classed as non-combustible and therefore avoid building regs? Or are building regs just not needed if it is not living/sleeping accommodation despite being 15-30sqm, made of wood and within 1m of boundaries?
Notes: Ridge height of gable roof would be ~3.5m and therefore planning required for sure. We intend to have electrics & networking in there but no water or sewage.
Many thanks in advance.
We are looking at putting in a log cabin/summer house in our garden, which is approx 7.7m wide. We had a design done for a building that is 6m wide (and 3.95m deep) and so it cannot sit 1m away from the side boundaries and is obviously made of combustible materials (56mm logs).
When we asked about building regs, the company stated:
"Due to the fact that the cabin is under 30 sq.m internal floor area, and not being used for living/sleeping accommodation, then the project is exempt from building regulations approvals. The only aspect in which you should comply with building regs is satisfying class 0 spread of flame. As mentioned over the phone there are two aspects to this:-
- The inherent char rate of the wood must give 30 mins char rate. Yours quoted is a 56 mm log at 0.7mm char/minute = 80 minutes
- Reduction of spread of flame. This is achieved by applying HR Prof which is a fire retardant. This only needs to go on the walls within 1.0m of a boundary. Where this is applied you do not need to apply the preservative also as the HR Prof contains preserving abilities. HR Prof will advise how much you need, and then it is a simple case of applying layer by layer until you run out."
Does applying HR Prof really make wood be classed as non-combustible and therefore avoid building regs? Or are building regs just not needed if it is not living/sleeping accommodation despite being 15-30sqm, made of wood and within 1m of boundaries?
Notes: Ridge height of gable roof would be ~3.5m and therefore planning required for sure. We intend to have electrics & networking in there but no water or sewage.
Many thanks in advance.