Russell griffiths

So are you wanting to move them onto your new plot ? if so get pruning and move them with an excavator so you can take more root than if you where hand digging.

I have a cold roof ventilated at the eaves and abutment wall, a warm roof will be 175mm approx higher than a cold roof as the insulation goes on the top, my ceiling height is 75mm lower than a warm roof as I have insulation under my roof rafters. So you need to draw draw it out and work out the dimensions you have to play with. cold roof ventilation detail at abutment.

Whatever roof buildup, I don’t think your joist size will go below 125mm

I’m not understanding if it’s a cold roof then your insulation is fitted between the joists, so how does reducing the insulation thickness gain you headroom. Surely the ceiling height is dictated by the joist thickness, not the thickness of the insulation in between the joists. You wont find much to better pir for insulation value versus thickness.

Can somebody do some rough number crunching for me please. There has been a bit of talk lately about block walls with just external eps insulation, so wondered where it comes out U value wise. From the inside out. 12.5 plasterboard 25 mm service batten 150mm dense concrete blocks 130mm eps 100 25mm batten timber cladding. Thanks, oh clever ones.

I was under the impression that ladies stuff should not go down the toilet regardless of mains-drains or a treatment plant. Same as condoms, cotton buds wipes etc.

Can you recommend any.

Here’s one for you then @FM2015, what sort of methods are people using to airtight woodcrete blocks. There are a couple of questions knocking knocking about at the moment regarding this.

Why ripped off, have you any idea of the cost of moving an artic truck across the country. My windows had a £700 delivery cost, plus £700 additional for unloading and positioning on site. The first cost I had no choice the second one I avoided by doing it myself with a forklift. Pick the right product for the job not the one that has free delivery.

Why is everybody hung up on transport costs, surely it all adds up to total product cost the time you get the product to site. Product 1 is £1000 plus £200 transport product 2 is £200 plus £1000 transport. Same same.

Everybody seams so hung up on the u value of one element of there build, yet don’t seam to grasp the fact that it is a whole load of parts of a house that you need to put together well. I have seen timberframe houses with walls with very good numbers on paper, yet when built I could see out to the sky with only the lead flashing forming any sort of airtight element. It really is about choosing a good system and building it well, you can take a standard 100mm concrete block and build it to a good standard with good insulation, or you can take a highly insulated timberframe and build it badly with gaps and joins everywhere. You need to look at a system that is robust with good detailing and good methods of construction.

You use a telescopic vent to bring the air back up to your damp course level. Problems, the trench you have made around the building can collect with debris leading to water ingress through the vents. Poor air flow due to vent hidden under ground. Do you have to have beam and block its a poor floor construction insulation wise.

https://www.british-gypsum.com/~/media/Files/British-Gypsum/Brochures-and-Leaflets/Product-information/Gyproc-Soundcoat-Plus-Brochure.pdf

Why have you got your airbricks underground, it’s not really a good idea and can lead to problems.

You can, but it won’t be cheaper.

To get to our finished size we both walked around our current house with a pen and paper and a tape measure, we didn’t talk about our thoughts just walked about jotting down the sizes that we thought rooms needed to be. The boot room needed another 1.5m in the width, but we could trim 0.5 from the main bath, we then had a chin wag about it and added it all up, in total we came out at 180m of living with 40m of garage attached, none of our rooms are big, just nice and usable. I think yours is a bit tight.

Go and have a drive around gravenhill in Oxford there are more external finishes on houses than I have seen anywhere else in the world.

Have you considered digging a bigger hole and having a low retaining wall instead of having to waterproof your building walls i did this on a garage that had a height restriction.

You can search 3/8inch as well, some air con is imperial.

I’m confused as well, are you intending to live in this as you build the new place. If you want cheap then stop looking at that external tile cladding, it is eye wateringly expensive. No no type of cladding should be fixed to the osb, you will need an external weather barrier membrane on top of the osb then a batten to create a void, if mot any moisture that penetrates the rain screen will touch the osb and could penetrate, the batten allows a drainage gap and also ventilation to dry any moisture that gets through. Metal sheets will be the cheapest form of cladding, as long as you stick to corrugated and avoid raised seam. Dont go smaller than 125mm for the walls 100mm of rockwool type insulation is not enough without a serious heat source and then you will be heating the garden as much as the room. You need to identify exactly what what you need this room to do then design around that.

im not exactly seeing the problem, these are my windows, if you look the mullion is very thick where an opening joins a fixed pain. If that window of yours had 4-5 openings then the mullions would be that thick all across. Would that not give what you are looking for.

@Dreadnaught one for you I think.

It’s about having a continuous concrete core, any block can be airtight if it has a continuous 150mm layer of well vibrated concrete. Its the block junctions where you have two layers of woodcrete touching each other, the woodcrete is a poor air tight layer and the gaps between the blocks even worse. Unless you where to use a can of squirty foam between each block they are inherently gappy and require a second airtight method.

Nope, none of the woodcrete blocks are as far as I’m aware, happy to be told I’m wrong.