Green Building Bible, Fourth Edition |
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These two books are the perfect starting place to help you get to grips with one of the most vitally important aspects of our society - our homes and living environment. PLEASE NOTE: A download link for Volume 1 will be sent to you by email and Volume 2 will be sent to you by post as a book. |
Vanilla 1.0.3 is a product of Lussumo. More Information: Documentation, Community Support.
Posted By: tbhulseI am upgrading the loft insulation too - should I be closing the cavity at the top and how? Am concerned about air tightness in the loft - any ideas on improving this other than a big can of spray foam? Any other comments appreciated.I would take off any soffit boards & carry the EWI over the top of the wall closing the cavity.
Posted By: tbhulseLike the idea of carrying the EWI over the wall, as long as I can do that without blocking the airflow.By that you mean airflow to underfloor? Not confusing with wall airtightness or water vapour breatheability. My approach is to dig a perimeter trench down to bottim of foundations, carry the EWI down into the ground as deep as feasible, backfill with Leca (lightweight expanded clay aggregate, little malteser balls, usefully insulative), optionally making a french drain out of it. Then the underfloor subsoil is kept warmish and bone dry (if french drain), so the underfloor void not liable to condensation, so you can block the air vents (which actually just import moisture) and you have a draught free fairly insulated ground floor without having to disturb it at all.
Posted By: eniacsIf doing EWI on a cavity walled house, make sure the cavitys are filled with somthing, otherwise they will have a negative effect on your toasty warm EWI coating!Why so? (can guess, but just checking)
Posted By: Swarmbeyond a certain depth of wall (something like 10cm), there are greatly diminished returns on the thermal mass effect
Posted By: samuelvincentvellaNo comments on my sketch?
I cant seem to find any best tried and tested EWI system for a 1950s Cavity wall bungalow. Can anyone point me to a good thread/blog/info source please?
Posted By: tonyIn Europe 200mm of eps is common with thin coat hitgh tech render in a thin plastic mesh for EWI
Posted By: samuelvincentvellaPhoto above finally.
Isnt board better for the roof? easier to maintain a vent gap?