Tbh I was not prepared for the cost of bee keeping and amount of equipment required. My better 1/2 was not fully on board with my new pursuit to begin with and was horrified with the costs involved. So I had to do everything possible to keep costs down. Using ply has given me a cheap way to get started. But now the miss loves bees, so fortunately I am allowed to spend a little more.
My roofs are made from a ply off cut deep eak, with pallet wood over the top, water proofed with a bin bag! Them Yorkshiremen always think they are the experts at being tight, well I cut one bin bag in half to cover 2 hives - beat that. I am not recommending this, but when there are bees in the tree and the budget is spent...
/QUOTE]
YES... I know the feeling, there are daunting costs in the first few years - When I started beekeeping my first hive (still very serviceable) was made almost entirely from reclaimed materials. 'Er indoors still hates my bees (except when she wants a jar of honey for one of her mates) and I still tread a very thin line about what I spend on my beekeeping. Fortunately, the honey sales are quite obvious and most of my costs are covered by reinvesting the money from those (I won't say profit as I know from my calculations that I have ALWAYS run at a loss as a running total - but - it's a hobby and you have to expect it to cost you something).
As for roofs .. I often see part rolls of roofing felt for sale on Gumtree - and very occasionally offered on Freecycle. It makes a very durable and effective roof covering You can get an awful lot of roof coverings out of a 10m roll ... Even if you have to splash out £20 for a new roll it's not a huge expense.
https://www.screwfix.com/p/roof-pro-green-shed-felt-10-x-1m/820ht
It's flexible enough to do 'hospital corners' and I used it on one of my sheds a couple of years ago and it is still in good order, it's a bit thinner than more expensive felts but actually that's better for hive roofs where there is a fair bit of folding required. Cheap but - better even than Waitrose carrier bags ..