Self build conservatory. Cavity insulation advice please.

[eyespy999]

Hi.

I am part way through a self build conservatory. I have 900mm high dwarf walls which have an outer concrete solid block construction with a 75mm cavity and then thermalite blocks on the inside.

I am just about to buy some thermal cavity closers from Screfix but my question is if I am using thermalites blocks should I still fill the cavity with insulation ie something like kingspan?

The conservatoy kit is being delivered in the next week or two so I am preparing the site. I also have a swimming pool on the concrete sub floor at least the DPC is working!

Thanks

 

[^woody^]

All the heat is going up and out the glass, and out the roof. So insulating is a waste of time and money.

I would not bother with cavity closers either - just return the blocks