Loft Boarding: DIY or get a professional in?

ic

I can recommend using the loft legs - you need 8 per board, though those on the edge of the board double up and also support the next board too in all directions.  When screwed properly with 30mm woodscrews, they are solid.  If you don't have one, I totally recommend an impact driver for this job - you'll have a lot of screwing to do in confined spaces.  Get some dust masks too.

I bought my loft legs from Toolstation - I later spotted they were available at a discount when buying in bulk from Amazon.  If you have insulation already, don't waste your money on more - if you're properly insulated the insulation should reach the underside of the boards if using loft legs.  If you do want more insulation, just buy the thickness you need to top-up.  Removing old will be incredibly dirty, and probably very itchy as its no doubt fibre glass.

Kiran

I sub framed mine before insulating. I used heavier duty cordek boards as I was having solar panels installed and the batteries and inverter were up in the loft.

It's definitely doable as a DIY job if you're fit, not a nice job to do when its warm though

bucksman

Likewise, I had a couple of quotes first and then decided to do it myself.  Used the 300mm stilts and added insulation at the same time. I only used the stilts in the storage area to save on cost.  At the same time, I replaced my old 1970s uninsulated loft hatch. It is a realistic DIY job, it was back-breaking and hot in the loft but well worth it and saved so much on the labour charge.  If you use stilts and they are not pre-drilled, I suggest you pre-drill them before fitting them. 

Gunner276

I've done a couple of lofts myself. First time I used loft legs which I foudn a massive faff.

2nd time I used 6x2 timber to support the boards instead. I found this a lot easier!