scottishjohn

not arguing --but we don,t know what type of roof it is at this stage ,or if it is cold roof type I,m guessing as he has insulation shoved up between rafters is not a true cold roof design anyway we don,t even know if it has sarking boards+ conter batons or drapped vcl type and single batons --as in england needs some more detailed surveying before commiting to any solution

OR get it pumped with foam then add vcl on top of exsisting plasterbord -the fit another layer of plasterboard ? less mess that way and could be done without wrecking house while you are doing it

I had carpets to start with when Iretro fitted UFH --worked fine -but when i changed to tile floor it became more responsive --not sure i could see much difference in running costs cos ihad underside of supended floor very well insulated

how about icyene foam pumped into the walls --it was the solution suggested to me for a similar house -- they cannot fill the outer cavity in a brick /wood frame house -cos they might trap moisture then wood frame rots away but totally possible to just make small holes in plasterboard between vertical studs and or so and fill up all space behind your plaster board -should make it air tight and lift the insulation in one go just a small bit of decorating to do after. not sure blown cellulose will make it air tight --could be wrong

or even thermal store we all know what we mean

will it not depend on internal size of the piping on the measuring board as to how far it moves --eg smaller pipe --larger movement for same pressure diff/

If its just to see how much of a differential before and after flap -then one either side of flap would show that I suspect --and cost nothing to make and as you say if you use something without correction baro pressure-itwill be hard to compare one day to another

dare i say it --a good use for a themal mass to smooth things out

If you like home made and cheap --make yourself a water manometer basically a pipe set at 45 degrees with a u shape at bottom washer piping on a board- it is also self calibrating to actual atmospheric pressure as it is open at top -- any sensor you use will not do that unless you have another one measuring actual baro metric pressure all the time used to have a commercial made one on my spray both --cos you needed to adjust input fan to extract fan to give very ,very small pressure difference from outside --so you could not suck in crap or WD40 spray,car polish dust etc-- in the air in the workshop which could contaminate the paint surface--too much and you pollute workshop with paint fumes an altimeter from an aircraft would work as well -

where are you in uk edit --stupid question --me not reading you post correctly --too early

the first thing you should be spending on is sorting the drafty leaky fabric of the house out then how you heat it is secondary what i will say is GSHP is not going to be best option in uk --cost will be far more exspenive than ASHP GSHP only has an adsvantage in very cold dounctris like canada where you get months of -15c and the fact that the ground will stay a constant temp makes the gshp COP rate a winner but not in our mild climate but neither should be used with a poor building

maybe just me but anything bituminous is made from oil --so you sure it will have no long term effect on foam? can,t see how it can be totally solvent free? acryilic based stone chip as used on cars --is solvent free and paintable the test to me would be if you can paint it if it don,t like it and melts --then it has a some solvent me i will be having windows just covering it and overlapping stone work by small amount+ flexible sealer at join

maybe if people could name the makes that have shrunk --could it be a price related quality problem

I would dispute that --they seem to go out of the way to put up objections to one off sites telling us what our house should look like -- and fall over backwards for big builders who cut corners at every chance

and then they do not leak check all the houses --so not a fair comparison to self builder would it be unfair to suggest brown envelopes changing hands

look here -- not slow considering its self build nearly speed is always going to be down to contractor--plenty of slow TF frame builds on here and TF will need lots more sound proofing

seconds? not saying you bought seconds --but maybe you been given them

If sound is important then ICF with concrete would seem better than sips --but ask suppliers for values and maybe triple glazed asit looks like you have quite large window area in that bedroom? are you self build or turn key --? as you mention speed of build as being a factor - the biggest thing that will hold the job up is YOU not getting spec correct to start with and asking for things to be changed again your chosen suppler /builder should be able to give accurate times sending plans to a couple of sips and ICF companies should give you prices and time scales if you are going to leave building to them

ICF under build?

If it did work then cutting it into logs would be much harder when it was dry -- professioinals cut it down and block it at same time because of this , and more surface area ontheends of all the blocks make it dry quicker as well

black is high organic matter.which is what you want to grow things it would become peat in 1000years+ if it was permanently wet and then it would be brown not black you could probably mix it up to 50% with sand and it would still be very good soil and free draining

tree rats

and i warranty it will never be as good as this stuff--black as coal

always the same when you looking for it -you can,t find it and its crap or it costs a fortune I got the other small problem 100cum+ of topsoil - the forest rubbish that has settled on my road over the last 50years its like black gold yes i can move it and dump it in the quarry --but what a waste need someone who needs it and will come and scrap the road and take it away --road is tarmac underneath the down side of not being close to a city

never triple glazing and a curtain or shutters like they used to fit 200 years ago ?