Jump to content

Dot and Dab


nod

Recommended Posts

I’ve made a start on the dabbing today

To those who already know this ignore this post

But we’ve had a few questions about air tightness and foam on block

Ive taken a couple of pictures

If you are paying a contractor to do this and it is any different than pictured Your not getting what you have paid for

and air tightness will be an issue further down the line 

Skirtings are decorative and shouldn’t need to be bunged up with foam

39CA123C-12B7-4DB1-8304-4C313EC5A82F.jpeg

81551804-0745-44C3-959A-70904942C1B2.jpeg

C231BE07-836D-4BB9-A186-17ACCA940948.jpeg

  • Like 1
  • Thanks 1
Link to comment
Share on other sites

You must be one of the tiny minority that put a decent peripheral run around the edges - 99% of dot'n'dabbers don't, and just create a plasterboard tent inside the house, with cold air able to get behind the boards easily.  Mind you, with no parge coat on the inside you're still going to get some cold air infiltration through the masonry, as it's generally pretty porous.

Link to comment
Share on other sites

3 minutes ago, lizzie said:

I'm looking at getting dot and dab done in the garage to use up a lot of left over plasterboard......I have never seen an example of dot and dab before so very timely thank you.

Thanks Lizzie

As jerremy says most bother and cold air circulates right around the house Under skirtings and kitchen units

Ive been doing this for 35 years

it really doesn’t take much more time to do it right

Much easer to straighten and fix to 

  • Like 2
Link to comment
Share on other sites

On 24/03/2018 at 16:50, JSHarris said:

no parge coat on the inside you're still going to get some cold air infiltration through the masonry, as it's generally pretty porous.

Hi

Is the parge coat really worth doing?

Does it make the airtightness that much better?

Link to comment
Share on other sites

7 hours ago, Luckylad said:

Hi

Is the parge coat really worth doing?

Does it make the airtightness that much better?

 

Uncoated masonry is pretty air permeable, so coating definitely makes a very significant improvement.  However, a lot depends on the nature of any structure or insulation outside the inner masonry leaf.  Some types of insulation, for example, can act as a pretty good wind barrier, as can some forms of outer wall finish.

Link to comment
Share on other sites

5 hours ago, richi said:

PVA solution

Thanks for the suggestion but I don’t think  it would work because you wouldn’t be able to build up a thick enough layer of pva.

18 minutes ago, JSHarris said:

air permeable

Previously we’ve only done a parge coat for sound proofing behind dot and dab.

I was undecided whether to do it on my own house.

Having seen your suggestion and read up on it, I’ll do it for airtightness ,on my own house,but it’s not something builders want to pay for.

Link to comment
Share on other sites

1 hour ago, Luckylad said:

Thanks for the suggestion but I don’t think  it would work because you wouldn’t be able to build up a thick enough layer of pva

 

I was dubious too, but the guy certainly seemed to know his onions, and had decades of experience.

 

I didn't PVA mine, because I wanted "proper" plaster.

Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...