Min distance between dormer cheeks?

[regdorp]

Our neighbours have a loft dormer (10 years old), with the cheek sitting 20cm (1 tile width) away from the middle of the party wall.

We now want to convert our loft but were wondering how close we can practically go to their dormer? We were thinking 20cm in from centre of party wall (same as theirs), giving a 40cm, but do you think this would be enough space to tile and maintain the cheeks? If we leave a bigger gap it creates an almightly headache with stair location/headroom.

Any thoughts would be welcomed.

 

[regdorp]

Just for extra info, the neighbours won't consider any suggestion of joining the dormers.

 

[Nakajo]

You can rip off the side of their dormer, build a proper party wall, and then build your dormer up against that. Might be nice to let them know first. Oh, and establish a Party Wall award.

 

[^woody^]

You can go as close as getting your hand in to seal and dress the flashing.

 

[regdorp]

Cant join them as they are just off of the party wall. Getting a hand in is one thing, but how much space to fix and repair a tile do you think we would need? 400mm, 600mm?

 

[^woody^]

Why would you ever need to repair a tile? What would happen to it.

I'd design it without tiles and pre-form it before fixing it in place.

 

[londoner1]

I had the same problem, in the end we went close and sealed around, Bottom line they cannot access their tiles now.

 

[londoner1]

I had the same problem, in the end we went close and sealed around. Bottom line neighbour cannot access their dormer cheek tiles now.

 

[Loft Conversion]

I can see this is an old thread and sorry for posting on here but we have a similar issue. My neighbour appointed their own third party wall surveyor and from the started insisted we raise the party wall in brick for a full width loft dormer conversion. We were proposing to build off the party wall in Timber as we have to go through permitted development to build it as our planning authority would refuse a full width dormer through traditional planning. I have no problem with raising the party wall in brick but this doesn't fall under permitted development (although I appreciate this has been tested at inquiry but not in my planning authority unfortunately). The party wall surveyor for my neighbour has literally said if we proceed down the route of the full width dormer in wood he would require an oversail license,legal fees, his fees for further surveyors and ultimately my neighbour would likely refuse to agree to the license to allow my builder to oversail the airspace above her loft to tile the dormer cheek. Still with me, hang in there Therefore with the threat of further exuberant fees on top of my neighbours third party wall surveyors exuberant hourly rate, I just want to know how far off the party wall we need to be in order to feasibly tile the dormer cheek (without oversailing the neighbours roof) and therefore not need a party wall agreement for the dormer aspect (just the steels). For reference I made it very clear from the outset that I would be perfectly happy for my neighbour to build a full width dormer in the future and even gave her the detail on how we can link the two together. I know at some point this party wall surveyor (who is clearly not acting independantly) will want a method statement to demonstrate how we can tile the dormer cheek from within our land too, just to complicate it, so it is the minimum space needed to physically hang the tiles.