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Katherine

Katherine

Guru
Moderator
Location
Manchester
MikeG said:
Well, it gets a bit technical, but negative pressure is part of it, and paying a little more attention to service entry holes (2mm gaps around the radiator pipes, and so on). I had used boards over the floor because of gaps between the (300 year old) floorboards and the absence of a ceiling below, but that wasn't enough. I should have put dust-sheets down instead, and thrown them out of the window when I'd finished. Back to negative pressure.....this is basically having an extractor running constantly sucking air out of the room to the outside, which means that air gets drawn in through all the little gaps which had released the dust into the rest of the house. With the air all moving into the room it should in theory prevent dust escaping into the rest of the house.

I've got two more rooms to do, and I've learned my lesson. I will be mounting a big old Expelair on a temporary board and fixing this in place at an open window, and I'll be going around the rooms with expanding foam and filling even the slightest gap.
Click to expand...
Good luck with regaining those lost brownie points!
 
MikeG

MikeG

Guru
Location
Suffolk
Katherine said:
Good luck with regaining those lost brownie points!
Click to expand...

I have the most equable wife on the planet. It takes a huge effort or an enormous foul-up to lose brownie points. In fact, she apologised to me (for being cross when she walked in to a fog of dust in the kitchen) before I had the chance to apologise to her for creating it.
 
slowmotion

slowmotion

Quite dreadful
Location
lost somewhere
MikeG said:
Well, it gets a bit technical, but negative pressure is part of it, and paying a little more attention to service entry holes (2mm gaps around the radiator pipes, and so on). I had used boards over the floor because of gaps between the (300 year old) floorboards and the absence of a ceiling below, but that wasn't enough. I should have put dust-sheets down instead, and thrown them out of the window when I'd finished. Back to negative pressure.....this is basically having an extractor running constantly sucking air out of the room to the outside, which means that air gets drawn in through all the little gaps which had released the dust into the rest of the house. With the air all moving into the room it should in theory prevent dust escaping into the rest of the house.

I've got two more rooms to do, and I've learned my lesson. I will be mounting a big old Expelair on a temporary board and fixing this in place at an open window, and I'll be going around the rooms with expanding foam and filling even the slightest gap.
Click to expand...
That's exactly what I did.......installed a high pressure fan in the window opening of the room I was working on, exhausting to outside. We used the fan at work for leakage testing of houses at a maximum of 100 pascals. In a single room, with the door shut, not a speck of dust escaped.

EDIT: A small section of the garden looked like the surroundings of a china clay quarry.
 
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Shut Up Legs

Shut Up Legs

Down Under Member
hopless500 said:
(Mon) :tongue:
Click to expand...
Agreed. I blame Google Translate for that one. I know that the possessive pronoun for singular objects must have the gender of the object (leçon). I really shouldn't trust Google Translate too much.
 
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