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Are you guys, TBS and LowCO saying that the method shown in the Isover clip is flawed?
totally agreeOP,
With old buildings, it is more important to ensure the walls are dry.
it will be worth insulating the wall to retain the heat and to improve the surface temp of the internal wall face.I´d do some calculations on the existing house to see if it is worth messing with the walls.
absolutely, imo fabric improvements should always come first. + the one thing often forgotten when insulating/air-tightness/heating is the the need for good ventilation/ air movement.Often the best thing to do is draught proofing, zoning the heating, putting in some heating controls and new boiler, and consider roof insulation.
+1 my preference is for the hemplime as its 'breathableWell for a start, the isover video says that the moisture layer is 'optional' and in my opinion it is vital. Other than that, it seems a handy enough drylining system.
apart from the thermal mass, a stone wall is a stone wallSuperman makes a very valid point. If your walls are say 400mm thick, there is some thermal resistance there, so they will keep in some heat and the house will feel warm enough once it heats up. This is likely to take quite some time as there will be a lot of stone to absorb heat.
I think 'finally' is the word hereThe advantage is that you have a huge thermal mass, which means that when you finally do get the house warm, it will stay at a pretty steady temperature for a considerable period.
that and the potential for interstitial condensation - will the OP tape and seal a vapour control layer at floors, ceilings, windows etc in an old house..One disadvantage of drylining is that you are ignoring the thermal mass of the wall behind - thus you will heat up a room far quicker, but once you turm off the heat the temperature will drop back down a lot faster.
There is no cavity with hemp lime. Plaster straight on. You need someone who knows what they are doing and there is a limit to how much you can plaster - maybe 60mm.Hi all,
Is this overkill? We would be very keen on using hemp but not really sure how the process is carried out? Is it just hemp plaster straight on to the stone? No Cavity? Budget is tight but at the end of the day this is probably the most important thing we could spend our money on.
Hi
I am about to start renovating a 130 year old Georgian house in Phibsboro...I have been told not to dry line/plsasterboard it as the red brick needs to breathe...any recommendations would be greatly appreciated!
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