Garage Conversion and Using KingSpan to Insulate new Walls Ask questions and find answers on a range of subjects relating to self build projects

[nicholas.booth]

Hi

Not sure if this is the right place for this post, but am planning to convert my attached garage built with the house circa 1980. The Garage is currently stepped back from the front of the house by about 2.5mtrs. Planning told me I can bring it forward level to the front of the house without planning and just building Control.
As I want / need to gain as much space from this as possible, I see I can use something like KingSpan K118 on battens affixed to DPC on the walls to insulate the current walls, but can I do the same for new extended walls. More to fact, I would actually like to use a normal cavity on the front facing wall, but Kingspan on the side walls. This will add support for the roof that will be replaced for one built with Scissor joists rather than standard to allow a little extra height also.
Can this be done? and if so how would you tie them together or would you create a single front cavity wall that is sealed brick to brick and then Kingspan the side walls?

Thanks in advance if you can help

Nick

[stoneyboy]

Hi nicholas.booth,
I suggest you ask the planners for confirmation in writing that you do not need planning permission.
I don't see any advantage in forming cavity walls on the front elevation you may as well make the whole inner like a timber framed building.
You will need to get the building inspector in before you start so why not discuss your proposals with him - he may have some good guidance.
Regards, stoneyboy.

[nicholas.booth]

Hi nicholas.booth,
I suggest you ask the planners for confirmation in writing that you do not need planning permission.
I don't see any advantage in forming cavity walls on the front elevation you may as well make the whole inner like a timber framed building.
You will need to get the building inspector in before you start so why not discuss your proposals with him - he may have some good guidance.
Regards, stoneyboy.

Many thanks for the reply. The idea of the end wall being cavity is that I actually need to mount a lot of cupboards, etc hold quite a bit of weight. Rather than do this on the the single brick wall, by adding the cavity wall and a row of blocks I can mount to the block wall instead. I don't mind losing a few inches from the length as it will be nearly 8mtrs, but the width is narrow and want to save as much of that as possible.
Am meeting with BC next week to go through my plans so I can make some written designs to put in to them and get some real pricings as well.

Nick