ear problem

[spoonse]

Hi to all on this site,im posting to seek help with my outhouse.Its timber framed and clad with ply sheeting on the outside with vapour barrier then e.m.l and two coats of render.Each time i go into the roomspace my ears swell up and have been told the pressure treatment may be to blame,so i need to find out what i can tosh over the studwork and ply to keep any vapours sealed into the timber, has anyone got any ideas?The floor is concrete and even after 16 months it maybe a little damp so i'll paint that over as well?

 

[Bespoke]

Hi

You could consider lining out your shed with a second layer vapour barrier plus using something like kingsspan between the studs prior using the vapour barrier. The vapour barrier can be a medium gauge of plastic sheeting but you will need to put it on all sides and ceiling and seal all edges / joints using duct tap or similar. All this prior to plaster boarding.

You may wish to check out the following sites.

http://bmdinsulation.com/celotex-kingspan-insulation.html.htm

http://www.screwfix.com/search.do?fh_search=roofinginsulationsavings&ts=54640

http://www.screwfix.com/prods/67489/Building/Damp-Proof/Damp-Proof-Membrane-1000Ga-4-x-15M

http://www.screwfix.com/prods/48805...-Tape/No-Nonsense-Silver-Duct-Tape-96mm-x-50m

 

[spoonse]

thanks for that mate,if i do double up on the plastic and then board it that should rule out the timber being the problem shouldn't it?At the moment ive taken down the sheeting which was on the face of the plasterboard just as a tester really but i noticed a hell of a lot of moisture on the face of the sheeting on the ceiling which was quite odd,there's been no heating in there either so i took it down because of this.

 

[Bespoke]

Hi

The moisture is due to it being colder on the out side than on the inside even that there is no heating in the shed, plus it is al so due to that there my be no ventilation? You may find the moisture will now dry out, open the door and let the air circulate.

If you file the void with insulation this will elevate the problem of moisture or you put some form of ventilation in the void such as soffit vents

http://www.screwfix.com/prods/68936/Building/Damp-Proof/Circular-Soffit-Vent-White

Or

http://www.screwfix.com/prods/16105...ing/Fixed-Louvre-Vent-White-9-x-6-229-x-152mm

Doubling up on the plastic will do no good what so ever just a waist of time and pennies you need insulation or veneration. If I was you I would go for a minimum of 50mm kingspan cut to fit tight between the studs / roof rafters.

 

[JohnD]

if you have a concrete floor with no dpm, it will bring a lot of damp out of the ground into the building.

usually ventilation is the way to get rid of vapour from preservatives.

what sort was it, and when was it applied?

if you are insulating a building you MUST have a vapour barrier on the warm side of the insulation. otherwise warm damp air will get through and will condense when it reaches the cold area.

p.s. I haven't heard about this swollen ear thing before. did your doctor tell you it might be preservative fumes, or was it a guy down the pub? and what do you mean by roomspace?

 

[spoonse]

Yep i know my ears react every time i go in there and i get the same response from everyone as they too haven't a clue what it is.Have been to allergy people,ent consultants and have looked at mostly everything down that road.
The concrete floor has been layed but not sure if there's anything( dpm )undeneath ,ive cut six vents through the walls to give it all some air and now leave the window open all day but the timber seems dry underneath the plasterboard where ive taken them off,maybe it'll pay me to take off all the boards and let it all breath for a couple of weeks.I think the treatment may be Wolmanit which i'm told is pretty harmless but you never know.I looked into the old methods and found that they used to use arsnic right?When i first used insulation i used normal isowool which is used in dry lining /party walls and loft spaces (which ive still got above the ceiling) but you say Kingspan would be better?and should the floor be coated with some kind of bitumen layer?by roomspace i just meant the room itself

 

[Bespoke]

Hi

If it was me I would put down a floating floor; consisting of 1000g blue plastic sheet 25mm Jablite and 18mm moisture resisting flooring grade chipboard. See drawing I have done for you.

http://www.alanwakefield.co.uk/spoonse.pdf

http://www.jablite.co.uk/

 

[spoonse]

thanks for the drawing mate,that kind of floor looks good,would i give the sheet an envelope which flaps up on the skirting areas and then tape up on to the sheeting which i'll hang on the walls?

 

[Bespoke]

Yes