Shed - no access to 2 sides, how to prolong life

[roodles]

Sorry for the long rambling post, just looking for pointers.

TL;DR, want to re-treat side of shed with 5" access haha


I've just moved into a house which has a shed with electrics installed, armoured cable going in and it's own fuse board. So the shed cannot be moved. I want to beef up insulation (celotex is quite expensive) and make it a home office.

There are 2 sides of the shed butted against fences. I cannot access them as it is neighbours gardens and there are extensive shrubs etc.

One side has a 2" gap between shed and fence, and the roof overhang is about 3" so actually over the fence very slightly.

The other side is about a 5" gap (so about a 2" gap from the roof overhang to the fence).

The roof slopes into one corner, which is on the side slightly overhanging the fence. I think the water therefore runs off over the fence (need to check this when it rains).

What are the best options to prolong the life of the shed - it looks virtually new at the moment. I was thinking maybe installing guttering and trying to squirt some spray wood preserver down the sides from the roof?

Any shed experts got any pearls of wisdom for me?
Cheers
Rob

 

[Burnerman]

Fix some guttering and guide the water well away from the shed.
Apply preservative with a garden spray.......the type with a longish lance maybe?
Allow a good draught on the underside if possible......block any access with wire mesh to keep the leaves out.
John