Pipe lagging / insulation with no space

[jacko555]

Central heating pipes on the ground floor have no lagging. Subfloor is well ventilated (read that as same temp as outdoors).

Before winter kicks in, I want to lag/insulate the pipes.

However, they are all in very shallow notches and the pipes are mm's away from the floorboards.

How is best to lag these?

I see pipe lagging comes in both 13mm or 9mm wall thickness. I reckon the 9mm would probably squash down, or maybe will if I trim the top edge to fit?

Other idea is loft insulation - add some netting underneath and just entomb the pipes in forbidden candyfloss?

I wonder what would give best insulation. Or maybe do both?

Welcome any advice or hot ideas

 

[Razor900]

Traditionally felt lagging would be wrapped around both pipes as far as possible and cable tied on.

Davant Felt Pipe Insulation Wrap Roll Grey 101.6 mm x 7315.2 mm FPCN6

Traditional stitched felt pipe insulation for economic and effective protection.

www.cityplumbing.co.uk