Kingspan Kooltherm K7 Plus boards

Drakon

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I'm considering adding extra insulation to the attic of my house. As I want to use half the attic space for storage, I'm thinking of laying down Kingspan Kooltherm K7 Plus boards. These are the ones with chipboard bonded to one side of the insulation board.

I was wondering if any members have installed such insulation boards? Or any similar insulation boards?

Thanks.
 
I've put similar in my attic, they work really well.

The Kingspan ones look better than the ones I have in that the have t&g on all 4 sides. Ones I have just have it along the length, so there can be some movement on mine at the end where they're not jointed.
 
Thanks Leo.

What make are yours and do you recall how much they cost?

Thanks.
 
Mine are the generic ones B&Q sold, so they wouldn't be of the same quality as the Kingspan ones I'd imagine. But they do the job well. I got them when they were on offer of something like €10 for 3. Each one is ~1.2m x 0.3m with 100mm insulation.
 
Despite contacting a number of retailers whose details I got from the Kingspan "our suppliers" webpage, and speaking to one of their sales reps, I was unable to get my hands on any of these Kingspan loft boards. Eventually I went with Xtratherm instead.
Not a cheap form of insulation, that's for sure. I covered about half of my attic with these boards, costing €900. The other half I'm going to cover with rolled insulation. This is coming in at €180. So, the loft board insulation costs about five times as much. The advantage is that you do get to use (some of) the attic as storage space. Handy for the likes of Christmas decorations, suitcases and other items that get used only once a year or so.
Interestingly, the pallets that the boards were delivered on are made from the same rigid insulation as is used for the boards. I suspect the insulation must be a very cheap product to manufacture if it costs less to used it to make pallets rather the timber!
 
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