as i have been in the building trade for 18 years now i find i come across lots of useful tips for home improvement.
and i am going to need them as i am moving home soon and my new house needs a lot of work.i.e new kitchen ,new bathroom,loft conversion ,walls knocked down ,new garden and a lot of plumbing nd plastering.
if anyone needs any hints for home improvement i would be glad to help with any advice i can give

What exactly do you? Construction, contractor?

I'm an electrician with thirty years of experience in construction, I too would be willing to field any question that may arise.

i own a tiling company we do domestic ,commercial,industrial contracts i.e factories ,houses and supermarkets.
as an offshoot we also do household repairs i.e plastering ,plumbing ,electrics e.t.c.

I've got a question;

Because we get an ungodly amount of snow here, and I'm getting much to old to shovel the snow off my roof. I reinforced the 2x6 rafters (24 inches O.C.) in my house by turning them into trusses. I used 2x6's on edge for the top runners making them 2x12. Tied them in with 2x6 collars. Then built knee walls to shorten the span.
The original sheathing is 1/2 OSB (wafer-board) I'd like to put 5/8 CDX plywood over the top of the OSB to double the sheathing.
Should I remove the shingles, or could I go right over the shingles with the plywood. I plan to use Ice and Water barrier half way up the roof, then metal roofing. (hoping the snow will slide off, knowing that it never does.) Or do you think using the 5/8 plywood is overkill?

We broke annual snowfall records last year. 144 inches I think it was.

Hi 12x48y, You never want to overlay sheeting over any roofing material.

Have you check with your local building and planning department to see what the current codes for the snow load in your area are?

Here is a good article on understanding construction for snow loads.

Metal roofing is making a comeback in popularity where I live, they're long lasting are quick to install.

Where do you live?

OK that's what I thought. I'll remove the old shingles, (actually it's rolled roofing) I thought I could save a step, and the cost of a dumpster.

Local codes requires 5/8 plywood or 5/4 hemlock, but thats minimum codes. I want to go above minimum codes requirements. Many buildings in my area
have collapsed roofs, due to snow load, including the local True Value Hardware store. Which, by the way, had engineered trusses.

I live close to Redfield NY. We made the news (CNN) this past winter with the most snowfall. But that's nothing new for us. It's just the first time someone kept track of the snowfall, and reported it.

Thanks for your help.