Pitch of a peg tile roof?
Discussion
In the middle of putting a small extension on my grade 2* property and Building Control have just thrown a bit of a spanner in the works...
On the rear of the building used to be a porch with a red peg tile roof. We have planning and Listed Building permission to extend this porch sideways (about 2.5x the original width) and to fully enclose it, creating a utility room room and entrance hall.
Planning and LBC (listed building consent) passed the plans on a similar look to the previous porch which also was in keeping with the rest of the house, so lime rendered walls an top of a red brick plinth, with a red peg tile roof.
All has been going well until today when building control came to look at the roof. My builder has noted they have said the pitch (I think 26deg) is insufficient for a peg tile roof and that slates must be used. They have apparently stated that the pitch must be 45deg which would be impossible to accommodate. The original porch never had anywhere near that pitch (am not sure anywhere else on the house has too, and that's been fine for over 520 years!). I'm pretty sure a friends' extension doesn't either (am checking with them).
Can anyone confirm what the pitch requirements are for such things? I'm busy Googling but with a number of roofing specialists on here was hoping I might be able to shortcut some searching as I could do with going back to building control with an argument or alternatives. Changing the roofing material will almost certainly lead to headaches with planning and LBC, so am hoping to be able tp avoid it (and am aware that some building control regs can be "overruled"/relaxed where listed buildings are concerned).
On the rear of the building used to be a porch with a red peg tile roof. We have planning and Listed Building permission to extend this porch sideways (about 2.5x the original width) and to fully enclose it, creating a utility room room and entrance hall.
Planning and LBC (listed building consent) passed the plans on a similar look to the previous porch which also was in keeping with the rest of the house, so lime rendered walls an top of a red brick plinth, with a red peg tile roof.
All has been going well until today when building control came to look at the roof. My builder has noted they have said the pitch (I think 26deg) is insufficient for a peg tile roof and that slates must be used. They have apparently stated that the pitch must be 45deg which would be impossible to accommodate. The original porch never had anywhere near that pitch (am not sure anywhere else on the house has too, and that's been fine for over 520 years!). I'm pretty sure a friends' extension doesn't either (am checking with them).
Can anyone confirm what the pitch requirements are for such things? I'm busy Googling but with a number of roofing specialists on here was hoping I might be able to shortcut some searching as I could do with going back to building control with an argument or alternatives. Changing the roofing material will almost certainly lead to headaches with planning and LBC, so am hoping to be able tp avoid it (and am aware that some building control regs can be "overruled"/relaxed where listed buildings are concerned).
Lotobear said:
On slate roofs laid to lower than recommended pitch, I've agreed with Building control on a number of occasions to lay a mineral felt roof on sheating ply battened and then counter battened to accept the slates (tiles in your case)
This has been accepted as being compliant with the Regs - essentially a double roof with the felt roof acting as a last line of defence if water penetrates through the slate outer covering. It could get you where you need to be.
This is in Cumbria by the way and we know all about driving rain here!
To close this one out, this approach worked This has been accepted as being compliant with the Regs - essentially a double roof with the felt roof acting as a last line of defence if water penetrates through the slate outer covering. It could get you where you need to be.
This is in Cumbria by the way and we know all about driving rain here!
Thanks for the pointers.
Couple more issues addressed so the build continues...Should be done and dusted by the end of next month
Gassing Station | Homes, Gardens and DIY | Top of Page | What's New | My Stuff