JamesP

And @SteamyTea Thanks for that, will have a read and could replace with rockwool. I read that some type of aluminised vapour control membrane needs to be fitted. I will look for a drawing.

I have a 12m x 6m garage with carport on the end. I have now enclosed a 3m x 3m area to accommodate a sauna, 2m x 1.3m, separate shower +WC, and kitchen sink. Large enough to lie down, 3 seated. I had some 150mm Celotex left over so used that on the base, + 50mm concrete screed with electric UFH. Fitted Celotex in the external walls. External cold shower and above ground plunge bath eventually. Stud work completed, waiting for the electrician..

In 2017, BPC supplied a metal silencer, ASM 150600 with my kit. I fitted it between the Vent Axia unit and supply manifold only. Unit fixed down well? It might help temporarily, disconnecting one of the supply from the manifold to the bedroom as you have a double.

Just had a quick glance at your drawings, looks great. I do like the split level, we have a sloping site and all 4 entrance /exits are flush with the outside. Any doors to separate the hallway from the main living area? Noise might be an issue upstairs. We have 2 pocket doors (Not noisy) and are in use most evenings if others are in the bedrooms. I would spend time and money on soundproofing between bedrooms and bathrooms.

I fitted about 55sqm of Parador Trendtime 5 LVT, rough dimensions 900mm x 450mm x 6mm. Floating on Caberdek. Good quality product but does slightly lift where sited in direct sunlight in front of 4 metre sliding door. Very slight bow between first and second tile now. It just lays flush up against door threshold, I left expansion gaps against walls and under kitchen cabinets. Gaps all hidden. I plan to lift the first row and apply either glue or double sided. No obvious movement issues anywhere else.

Not Bosch. Lots of good advice on thread, if not ready to spend I would recommend again hiring for a weekend at least 40cc + machine. Fill it up, plug in your AirPods / headphones and keep clearing until the tank is dry, repeat and see how you feel. The site needs clearing by you or others and then kept cut back, mown using a flail / topper, ideally.

Depending on the area and frequency you wish to cut back the overgrowth, I would rent a 40cc + Husqvarna or similar for starters. It will need heavy duty strimmer line or a metal 3 tooth blade for dense and heavy grass and small woody stems. You will need a harness and eye / ear protection. Fuel and oil. I have a Huqvarna 545 RXT, it's a brute, yes expensive but will last me out if maintained. It can be exhausting clearing large areas so be realistic about your goals.

I did B, no movement or cracking. Taped and skimmed. Lets ask the boss @nod

I agree with @Mr Punter. Have 2 runs. Not a professional but I exited pipework out of the building to avoid long runs within the slab. Bit of extra external excavation but all accessible.

Please explain why you call it a softwood? Paging @SteamyTea

It has been working fine, been in use for 5 years now, emptied twice as we have a septic tank here as well for another building. Very simple operation, has been redesigned since this model. Air pump housing was basic plastic box which reverberates so needs careful placement sound proofing, etc. No settled sludge, no smells. Much missed Joe90 passed away in February.

Yep, a race to the bottom and we are winning. Their is a lower and standard rate depending on qualifying materials.

Correct, most composite doors have a solid timber / foam core surrounded by uPVC.

You would need to check the lipping amount on each vertical edge. Our internal doors have 6mm lipping. External doors are usually constructed using solid strips / blocks of timber but you would need to check the door spec on each stile. You probably need to move / replace the door stops depending on thickness of replacement.

Rough, you need an architect.