tonyshouse

I would like to see him use road planings - fines could mean black sand so you want to see a sample 0.5m2 trial patch first

From DraughtBusters website https://readinguk.org/draughtbusters/going-further/dot-and-dab/ and a brief article from 2013 https://readinguk.org/draughtbusters/wp-content/uploads/2014/04/gbf-blob-and-dob-20131.pdf

Seamless ali gutters sat inside the concrete channel for me, and kept clean

Any more there? Cheaper to reuse them and replace them with any others

Looks like an aerated concrete block, I hate them. Easy to drill and fix to 5.5 hole not on hammer red plug no10 (4mm) screw 50mm ok for rad, dont overtighten

Don’t use screws! Basically one bend as normal, second one has to be cut immediately at the dot at the top of the s line. Then clip it to the other one as if it was a bit of gutter if you get desperate it is possible to heat up and reform the bend, squeeze it and cut it to mate with the second one. They don’t male street gutter bends final potion use 135 bends and a bit of lead to redirect water over the missed bit

I would rake cement into the sand 8:1 - common practice to level out undulations. Sheet insulation would work too

No membrane on top, I would do a layer of reinforced concrete to help stop tiles cracking, yes definitely have movement joints

I buy on e-bay

Sun tunnels are best suited to hotter countries with brighter skies. A roof light would be a better option here, zinc can be soldered/braised to form upstands and a shallow pitch roof kit used or just diy 3g glass panel with downturns

Nice but majority are not properly airtight, instead passing and looking airtight but really only plasterboard tents.

I have a BEAM central vac, diy recycled rainwater system, Genvex MVHR some pics and info on my website

Don’t allow dot and dab!

I have a basement with plant room for MVHR , central vac, rainwater cistron solar PV, consumer unit , no spa though but office and gams room

You will need to comply with part L1b of the building regulations in particular the U value requirements even if not formally controlled

Go bigger 100 drain slow long radius bend ?

Glass? Do you know what area is allowed under pd?

There will always be silly little bits in a valley, even with a dry valley

If the test holds at 40mm for a couple of minutes then you should get a pass.

Insulate underneath 2 to300mm and pipes above with a sealed air void or spreader plates. Where can the heat go? It has to warm the floor turning it into a radiant floor. my floor sometimes has ufh, rarely but flow temp is never above 20 and with people, lighting etc the room is slightly warmer

Why do you want screed? It will work without it

You can never get the soil stack to hold more than the shallowest trap holds, plug the top of the svp and the manhole then push the manometer hose through a trap, WC is easiest blow in some air or water, the guage should stay at a positive pressure marked with a pencil after a few mins and not leak away to nothing 50mm of difference in level would be good but with shallow seal traps 38mm might be the best you will get

That is not really a problem, the head lap on the whole gable looks a bit short and I would rather have seen them overlapping more into the valley. New lead was a must do in my book

No decorators remove doors ! I like satin but H&S is pushing us away from oil based I no longer use white or brilliant white at home preferring off-white, natural calico or creams of various shades

Upside down guttering works well ?