How to Dot & Dab Insulated Plasterboard - a DIY Guide

In today's video I will be showing you how by installing insulated plasterboard, you can transform the warmth of your house!

Today's Toolkit:
mains powered drill

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I've now insulated 4 rooms in my house - 3 using this method of fixing insulated plasterboard with adhesive bonding, and our bathroom where I mechanically fixed the plasterboard to battens. I find adhesive bonding a much easier method as with battens you need to pack out each batten to get it plumb and to line up, whereas with adhesive bonding, you can use the thickness of the dabs to adjust the finished position of the plasterboard.

Building Regulations

Kingspan Resources
- General advice Insulation Technical Service Department UK – Tel: [phone]

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LET'S CONNECT!
Charlie DIYte

[graememaguire]

Charlie, tidy quality job. I've been plastering 40 years and I'd score you 9/10. Just a few comments, too much adhesive. Dabs only need to be 600 centres edge and middle of the board, dabs were too flat and should pretrude from wall 75-100 mm and board from window reveal out toward corner of the room All these tips will use less materials but all in all you have done a great job 👍

[mel]

I've learned so much from this. Was nearly about to have insulated plasterboard put up on all four walls without being aware of building regulations. Life saver, thank you!

[stringerbell]

Nice job Charl, I would never have known job like this had so many pitfalls for a nightmare outcome. Nicely explained, great that you listed all tools necessary. Really impressive, really interesting. Well done!

[CharlieDIYte]

For anyone thinking "didn't he post this a few days ago", you're absolutely right! I took it down to add a few important details!

[Jcoughlan]

Had a mate that retro insulated 5 houses like this except he used PU foam adhesive to adhere it to the wall. And mechanic fixings afterwards. PU adhesive is less likely to draw water through the wall. But you can’t use it to plumb the wall.

Great if your walls are fairly flat and plumb to start off with.

[mrflatroofer]

Good video. Done this system 45 years ago. Still there.

[MtBArN]

I do this on a daily basis. Well done!

[Grayman]

Well done mate I am a brit living in canada and iam going to try your method on my son's bedroom because we also live in a 1920s house

[robandamyp]

I'm a plasterer and I'd like to say very nicely done make sure you use a secondary fixing the adhesive is more like a packer I like to use 6 fixings more like a 6 on a dice than the way the manufacturer recommend but top job I've had lads working for me with years of experience that turn out worse boarding than that well done

[deanbond]

Nice video, well explained and set out.
Anything is possible with research, the right tools, and time.
I feel D.I.Y gets better with trial and error, practice brings confidence to every job after the very first.
What ever that might be.

Thanks to guys like you, people can see its possible to have a go.
Cheers 👍🏽

[gregnelson]

Thanks Charlie for the really useful info on your channel I have learnt a lot about insulating our home.

[jeffjeffjeff]

Fantastic video, thabks for taking the time to record, edit and share. I'm going to tackle my front porch which is only a single skin of brick as it's the cold spot of the house and I was looking for recommendations for an insulated and moisture-proof board and this came up right away. I'll probably go with the batten fitting solution as I doubt it has anything in the way of moisure prevention currently. Thanks again.

[JasonJFlippingLife]

Thank you so much for taking the time to do this video and the one about relative humidity. I'm planning to purchase a property in Central Portugal where the older homes are notorious for being cold and humid during the winter. I now have a general understanding of how to tackle those issues.

[johnniewarren]

Love how comprehensive your videos are a pleasure to watch look forward to seeing more of your projects

[georgenixon]

Great video Charlie, clear and well presented. I have bought a villa in Spain with solid walls, and the rooms are COLD in the winter. I had thought about insulated plasterboard. Having watched your excellent video, I will be insulating the wall, so hears to a warmer property.

[scottishpatriot]

I worked for a double glazing and conservatory company a few years ago. We would always use kingspan as insulation. I remember it had a fishy smell when you cut it lol.

[Jeff-gwdv]

Charlie brilliant video just what i needed as am going to do my small bedroom after having a steel girder fitted to extend kitchen dinner below so have ripped out old dob and dab plasterboard and will now fit the 50mm kingspan as the dobs on old ones were nearly 2" thick.!!

[mattyp]

Useful video Charlie thanks for posting. You do make it look easy! I imagine some complexities not mentioned, such as boarding around the window and needing to extend window sills and what about electrical wiring, the cables would need to be long enough to feed a patress that was now further from it's original location and would need to be fixed to whatever the new insulation has been fixed to. No expert here so maybe i'm overthinking it.

[Philsy]

Retired builder good demo Charlie. No rambling tech waffle nice straight down to brass tacks! Many rather pay its still a tough job ok if fit and enthusiastic!

[reginap]

Another brilliant video, thanks Charlie. The way you installed your insulation was so much more thorough than our builders! Re solid walls and dot & dab v mechanical fixing: On an early Victorian 4 storey terraced house, we were advised by Kingspan to mechanically fix on the 2nd floor where the walls are thinner and there was a risk of water penetration but I wanted to let others know that we got away with dot and dab on the 1st, ground and basement. The basement has no soil against it and the walls and floor were damp proofed with a Newton membrane. In addition, the walls get thicker as you go down the house so Kingspan calculated from our dims that they would not suffer from water ingress. We also observed the walls over a couple of years and knew that there was no damp issue. So it is always worth checking with the very helpful technical team at Kingspan.