I have a council garage in a block of garages and basically the inside of the metal roof is always soaking wet when we have a frost and drips shit loads of water on my car......(pain in the ass when its clean)..... What I want to do is stop this happening so what I'm thinking is boarding the inside and putting loft insulation between the roof and the boards.... will this work or am I wasting my time???


Cheers
Steve

 

im no expert

not sure if would still happen if insulated

but i would put a platic membrane under the roof first


as you will just dampen the rock wool and it wont dry out



sure someone will put up a more sensible answer

 

pointless putting insulation the boards through time with the dripping water will soak into the boards and maybre collapse

get on the roof and try and find the leak then silicone it up then do the membrane stuff and make sure their is some ventilation for the insulation.

 

he didn't say there was a leak it is clearly condensation forming on the roof.

 

As above..... its not leaking as the roof is brand new but condensation is forming on the underside and getting my car soaking wet

 

ok i misread it.

 

Form a suspended ceiling below it...say 100mm lower using 50mmx50mm timber. Insert kingspan insulation inbetween the timbers and then board over. You then MUST vent from the outside the 50mm gap between the top of the timbers/insulation to stop condensation forming..

 

is there power inside,if so try a dehumidifier
with wot lee says

its not as if lee dos,nt know wot hes talkin about hes a builder ,click on his web site




oh fook ya can,t,some arsehole been moanin

 

carcoon?

 

Basky

roflmao

 

Meant to say before i went to the expense of all that, id bang a couple of air grates in if possibe at high level opposite each other and use a dehumidifier. If that dont work then go for it...unless you are wanting a nice snug garage

 

dont give to much away lee
they,ll have you for advertising

 

Basky


PMSL thought i was being discreet

 

It does have good ventilation..... remeber its a council garage at Ł7 a week rent so not exactly built well... the door doesn't exactly fit snug and I can see light thru the back end of it all the way along infact I think its a result that the roof doesn't leak.....lol
And as you'd expect with council it has no electricity either...

 

you,d have to go with wot lee said



but dont tell anyone he told you

 

maybe a good outside car cover is the easiest and cheapest way

 

carcoon then or good waterproof cover Steve

 

or.......

sell the car

or.......

leave the car outside it'll save me Ł7 a week and probably stay drier


last winter when I have the Fiesta in there I didn't notice the wetness... probably because I had the car covered up from Oct to Feb and only opened the garare twice maybe 3 times in that period..



Anyway, basically my idea is a load of poop then in my 1st post ????


Cheers for your help peeps
Steve

 

Hi

It sounds like condensation probs are your woe.

The easiest idea to install more ventilation right up in the eaves to encourage some airflow to flow along the underside of the sheets and try and stop the moisture building up.

Cheap alterntive could be to hang some visqueen up (make sure its baggy and not tight underneath the roof, say 200-300mm away and loads of gaps front and back for air ventilation) and use it as a channel to shed to water off towards the back/front/side of the garage.

That said, this is all trying to rectify a problem with a garage you rent that the council have just re-roofed....sounds like the sheets installed (whilst waterproof) are not functioning correctly. Some of the NT boards can actually absorb the early morning condensation and slowly evaporate throughout the day. Get the council to sort it.

Silver

 

As above,when i rented a garage from the council i had the same problem,they came out replaced the roof !!! Let them know and they will sort it

 

my bros garage is the same.its wooden and in the winter its so cold that drips of water are coming on to ma car.be aswel parking it outside.we are gona try insulate it this weekend

 

Insulating is ok as long as you ventilate it well too....otherwise youll make it worse as warm air carries more water vapour,,,cant get out and it hits a non pourous surface and turns to condensation...

The visqueen idea wouldn't work either, as yes it will catch and channel water from above, but will have its own build up underneath so wheres that gonna go?

 

Try hanging it like a bivvy.

If its steep enough it will run down and leave a big puddle (this is a prety crap idea as you will now have a sopping wet floor!!!)

However, this doesnt cure the original problem of the condensation.

Get the Council out to rectify.

Silver

 

Right this is my 1 and only plan that I "was" intending to do...... gonna cost me Ł44 as I begrudge paying more than this on a council garage and if its anymore I may as well buy a waterproof cover....

I have a well ventilated garage with no electricity and it too far from my house to get electric to.... It has a corogated steel roof thats new and doesn't leak. It has 4 wooden beams running from side to side that are approx 6" x 4" thus giving me a 6" gap between roof and wood if I put a 2nd inner roof skin up. The actual roof measures 17" long x 8'6" wide so I was intending to use 4 x 8' x 4' wooden sheets up so it'fd give a 6" gap either end and a 3" gap side to side for "breathing", now between the outer metal roof and inner wooden roof I was going to insulate with loft insulation.... Now my question is will this be of any benefit or just a waste of Ł44 and I might as well give up and buy a waterproof cover


If it were my own garage on the side of my house I'd fully insulate it, run some electricity in there and get some sort of heater to keep the old girl warm....



Steve

 

Id go for boarding it out steve with the gaps for venting, dont even bother with insulation mate. see how that goes. At the end of the day, even if the condensation still exists it would take YEARS for the small drops to rot the boards.....

Old houses...like cottages and stuff that hardly have any ventilation in the roof space have condensation on the underside of the felt which drips onto the plasterboards and generally doesnt cause too much problems....so im sure your garage will be fine.

 

I had this problem with a garage a few years ago. I ended up buying a sort of moisture trap from B&Q. It was basically a plastic tub that you filled the top of with granules and the condensation formed in a bowl at the bottom of it. The only downside was that it filled up with water so quickly that i had to empty it every couple of days and i got through bloody sackfulls of granules

 

Put a few bowls of dried peas around the garage

 

What about a few bowls of Pot Pouri. That,ll soak it up and make it smell lovely too

 

Cheers all.....

 

pmsl