Hi, continuing the saga with the summerhouse half erected in the garden.
Son#2 is coming to put the felt on the roof tomorrow. In the meantime, I have been advised to stick it to the roof before tacking with white bitumen or some other adhesive, to stop it tearing off in the gales.
I mentioned this to my son, who said he will bring black bitumen to undercoat the roof panels with before putting on the felt. Is this ok?
I really really want this done properly! Thanks for any advice here!
Yep, I used cold adhesive when I re-felted our shed roof a couple of years back, the original felt blew of in the gales, probably because I did not glue it when first laid, back in 1992 just tacked it back then.
Having said that 20 years was not bad, for a £200 B&Q 8'x6' shed, not sure how many years the old shed has got left in if, but i also upgraded the cracked plastic windows with some 3mm thick! clear glass like PolyCarbonate panels.
Firm we had with our shed screwed battens on top of the felt and into the roof, then siliconed the screw tops. Don't know if that's any easier, better, or worse.
Before they turned up I'd painted both sides of every panel with timber treatment.
------------- Mike
My advice is worth no more than the price paid for it
Thank you for that, Francais! Or should I say, 'Merci'! And also for the link. I think it's a good idea as well, especially with the gales we get in winter.
It said in the instructions to use the timber treatment on each panel before putting it up... but I just couldn't see how this could be done, without separating every piece and then putting them back in the same pile. It was hard enough, once we had opened a bundle and separated the pieces, just to see what parts went where.. With hindsight, I reckon I should have marked every piece, as there was only one slip of paper saying what it was, but four sometimes more pieces that the slip referred to. Once undone, it took some time to figure out.
Should I do the inside as well as the outside after the roof is on, Mike?
We copped out. Bought the shed and had erection included. It was delivered in panels a week before they turned up so I used the time (last summer) to do several coats both sides.
Inevitably then it was marked as they put it up so I did another coat on the assembled shed inside and out.
To be fair I think we had a much easier job of it with a basic pent shed than with a summerhouse which I can see would have more components.
It's our only outside storage so Mrs G wanted garden shades inside it. Bit overkill maybe for a shed but might be nice in a summerhouse. Personal taste really, I think.
Good luck with it.
------------- Mike
My advice is worth no more than the price paid for it
Timber expands and moves with the climate. I was told many years ago to nail the first layer, two reasons, 1/ easy to remove i.e. garden spade under the felt and lift off. 2/ the first layer will move with the timber.
Get yourself a roll of under-slate roofing felt and tack this on first, then lay green mineral felt on top, and fix with tacks.
I have just fixed my first layer on but the top layer will be shingles from Wickes. These are not single shingles like my log cabin but strips about 12 inches by 36 inches. Come in brown or green and personally I think will look better than felt.
Don’t forget to post a pic when done and good luck.
I was thinking the same about the wood expanding and contracting. I think you could possibly end up with large wrinkles on the felt which then creates another issue.
I think eyebrows method is the recommended way, the green mineral felt helps to deflect the heat from the sun better than a black surface.
Flat roofs are covered in chipping stones or more likely a solar reflective paint nowadays, both do the same job.
As you can't do that on a sloping roof, green mineral felt should help.imo
------------- It is a wise man who has something to say.
It is a fool who has to say something.
Trouble with most roofing felts that come with sheds,summerhouses etc is they are usually very thin. Ours only lasted a couple of years, but as it was already cut for the shape of ours I reluctantly used it. Luckily when it did eventually split I noticed it before any damage. I had a fish pond in my garden which I took up. The pond liner I brought for this was a good quality rubbery sort of stuff and this is now on my summer house roof. This will be its 3rd year on there and has been brilliant. Our shed felt also ripped off last year and again replaced it with pond liner. Geoff
I think I'm going to have to go with the bitumen and the shed roofing stuff that came with the shed. Son is *supposed* to be coming today to do it, and today is the only day he has free, so that's it I suppose.
Will keep the suggestions in mind for when it all comes off.. Pond liner sounds much better! :)
I bought a shed a couple of years ago and it came with a very thin roofing felt. Luckily it is still looking ok at the moment but the pond liner sounds a good idea when it needs changing.
The problem I have is that the shed is a cheapie made from overlap timber. In the winter the inside of the shed, although not wet from rain, gets very damp and mildewy which can't be good for my motor mower and I have to put most things in bin liners. Once the shed is opened up and aired out when the weather gets warmer the thin film of mildew on everything seems to clear.
Is this normal with cheap overlap sheds? I was thinking of fitting marine ply sheets to the inside frame like 'double glazing' but not sure if it is worth the expense.
Quote: Originally posted by amara 520 on 30/3/2014
Seems to be a lack of ventilation causing condensation, put in a couple of air vents on opposite sides of the shed
I think the problem is too much ventilation. The overlap panels don't fit flush like tongue and groove, there is a gap between them all.
Son turned up at 4pm to start and said that the bitumen he had intended using (don't buy any Mum, I've got some that needs using) had turned to water or something, and wasn't any use. It was too late to go to B&Q to get some of the cold adhesive Francais suggested, so it went on without. So at some point in the future, it's going to need re-doing!
You just can't get the staff these days!
ETA, I wish I had paid someone the extra to do the job like you, Mike! Hindsight is a wonderful thing....