To discuss your project give us a call on 01392 861763

Sustainable Building Forum

The place to share best practice advice about all things sustainable building. Use the search icon to find the topic you’re interested in or register as a member to comment on topics and ask your own questions.

Notifications
Clear all

What type of paint should I use on wood fibre internal wall insulation systems?

 
Paint finishes for lime plasters
Last Post by Chris Brookman 8 months ago
4 Posts
3 Users
2 Likes
1,135 Views
 Chris Brookman
(@chris)
Posts: 80
Member Admin
Topic starter
 
Any paint finishes that are applied to the lime plasters should be classed as breathable. This is usually a pretty vague description but I would suggest that any clay, lime or silicate paints would be plenty vapour permeable enough. Additionally, products such as acrylic supermatt are fine but do not use any vinyl based paint. A single coat would not be a problem but successive coats would begin to reduce the permeability of the surface too much, particularly on insulation covering brickwork or porous stonework.
 
Companies such as Keim and Baumit do nice silicate paints (although Baumit are more set up for commercial users rather than domestic as the smallest tub they do is 5 litres). Earthborn do nice clay paints but equally there are many other suppliers out there that have a good offering.
 
Hope that helps.
 
Posted : 09/02/2021 5:36 pm
Vickie Ward
 Vickie Ward
(@vward)
Posts: 1
Member
 

I used a natural paint from AURO and it is beautiful to use and apply - can stop painting a wall and go back the next day and there are no 'overlap' marks, it joins up beautifully.

https://www.auropaint.co.uk

There is a distributor who does their own range of colours using Auro as its base, which includes 40% and 60% colours.

https://www.edwardbulmerpaint.co.uk

 

Photos of the paint on my house here:

http://wordpress.easterdown.co.uk/?p=1500

 
Posted : 10/03/2021 9:45 am
Chris Brookman reacted
 Heike
(@heike)
Posts: 1
Member
 

Hello Chris,
Do you have experience with Climate Coating paints for internal applications (ThermoPlus, ThermoVital)? They claim the paint is breathable and capillary active and, thus, can even regulate room humidity. If its declared properties were valid, it would make a great addition to the internal insulation.

 
Posted : 24/04/2023 11:38 am
 Chris Brookman
(@chris)
Posts: 80
Member Admin
Topic starter
 

Thanks for your comment @heike 

Whilst I don't know the paints specifically, there is very little impact that a coating so thin is going to have over the surface of the wood fibre systems, which are already vapour permeable and extremely capillary active. I suspect you'd get a noticeable benefit on uninsulated masonry but I'm not sure you'd perceive any benefit over the plastered wood fibre.

Hope that helps.

 
Posted : 24/04/2023 1:52 pm
Heike reacted
Forum Jump:
Share:

CPD Training

We offer CPD training for architects practices across Devon and Cornwall.

Software Modelling

We offer dynamic heat and moisture modelling as well as condensation risk analyses.

Building Plan Review

If you have some plans and would like our opinion on which materials would be the best for you, contact us.

Overview

Back to Earth is a natural building material supplier. We're not your typical builders'​ merchant though and instead work closely with our clients during the planning, designing and building phases of projects.

Back to Earth is a proud signatory of the Anti-Greenwash Charter:

Social

Twitter
LinkedIn
YouTube

Legal

Terms and conditions
Privacy & cookies policy
Data protection policy
Delivery information
Returns and exchanges
Green Claims Policy

Menu

Products
Services
About us
Blog
Contact

 

© 2023 Back to Earth