We are interested in renewing the insulation here - it is now about 30 years old.
Can you send us details of local companies that can do the job? - Enid Roberts
I had a google after receiving your email and the nearest company recommended is this umbrella organization in Wrexham - a market gap there!
Perhaps it does need renewing after 30 years - but this depends on the condition it's in.
I've copied Guto Broschoot from Cyd-Enni because he's an expert on this - and lives in Tregarth!
I'm looking at insulating as well- floors for us. The usual salesmen and workers recommend Kingspan or something similar, a stiff board made of some kind of foam. They're probably the cheapest option.
I personally try to look for natural materials as well, and there are several online retailers that explain insulating materials like wool, cork, hemp, and wood and kids fibers. Those let air and moisture through better, and this is important in an old house. Another advantage is that they are plant based materials, so they can be composted or disposed of naturally once they are useful, and some of these fibers are also better at preventing fire than foam boards.
Here's a link to Ty Mawr in Brecon selling sustainable building materials https://www.lime.org.uk/, and they also give good advice on their website or over the phone. There are others for you to find out: Mike Wye, https://naturalinsulations.co.uk/, and there's information on the CAT site in Machynlleth as well.
For local workers with experience of working with more natural materials, see:
Inner World, Rachub,
Tom Goodey (lime plaster; but this is for larger walls than a roof).
When it comes to the roof, I think that wool gives you the best insulating value, and wool is pretty easy to fix yourself.
Also remember that you want to look at the whole house - insulation, keeping the house dry, ventilation - because treating one can affect the other.
Hope this is a useful start; come back for another chat if you want to!
Page updated: 24/08/21