extending outbuilding....help

[b21playa]

Hi all,

Wondering if I could get some help and advice before I consult the local authority.

The basic picture below shows the current layout and what I want to do.

A semi-detached house which has an old outbuilding toilet in it. I want to knock the back wall down and extend this to create a laundry room and then a shower room.

I understand I may be permission or building control for this. Currently we have no inspection chamber, so i assume it will be a requirement for this to be put in?

It is currently built out of double skin bricks. I have a load of 6" concrete blocks left over, Could I use these externally, then stud and provide insulation internally? The external will be rendered to match the house.

Any help and advice appreciated.

Thanks

Untitled

• b21playa
• 1 Sep 2009
• 1

 

[b21playa]

anyone offer any help?

 

[^woody^]

There is no reason why you can't use the blocks and have the membrane and insulation on the inner face

For inspection chambers/access points, then that's just a technical matter to be sorted with your BCO. You are going to get little waste from this, no solids, so a rodding point or small access point should do instead of a full inspection chamber. Just devise a layout and see where one fits best - preferably externally

 

[b21playa]

There is no reason why you can't use the blocks and have the membrane and insulation on the inner face

For inspection chambers/access points, then that's just a technical matter to be sorted with your BCO. You are going to get little waste from this, no solids, so a rodding point or small access point should do instead of a full inspection chamber. Just devise a layout and see where one fits best - preferably externally

Hi woody,

How much insulation would be required internally?

 

[^woody^]

Typically 80mm of Celotex/Kingspan.

It would be better to have 50mm between a timber frame (50x50mm timber) and then 30mm across the whole face to avoid any pattern staining