- Any Solid Wall Insulation experts on here…
It can be expensive, but there is a lot of decent funding about now (since the beginning of the year), depending on the spec you go for you could be looking at 70% ish funding (funding is called ECO).
Be careful of a material called phenolic, starting to get some reports of it needing repairs/replacement after a few years. EPS or mineral wool are seen to be better now. Silicon or render/dash are cheaper, but brick slips are available which would push the price of a job up and lower the %age of funding contribution.
Good idea to team up with your neighbours if they’re also living in solid wall properties, can get some cost savings through economies of scale.Posted 5 years agosa9000Member
if it is a solid wall then either the external insulation must more vapour open “breathable” than the wall itself or a internal vcl vapour control layer must be installed.
basically this means to comply with regulations eps, celotex etc need to have a floor to ceiling membrane installed
this isn’t in a lot of the manufacturers info but is in relevant British Standard It’s conveniently forgottenPosted 5 years ago
I work in the industry,for a manufacturer. Second the advice regarding phenolic. For cost v performance graphite coated EPS works well, or if you can afford it use PIR.
Most of the rendered systems have a synthetic typically acrylic or silicone finish which depsite what many manufacturers tell you about claims of “self cleaning” or otherwise which will eventually need to be recoated.
Go for a mineral render or dry dash finish if you want it to last or want less amintenance.
Look for an installer who is PAS 2030/green deal acreddited. Many will be starting to offer the 25 year SWIGA guarantee. Ideally look for an installer who is a memebr of INCA or the NIA.Posted 5 years ago
Celotex and kingspan have phenolic products, they also have products using other insulants.
We’re getting reports from some of the EWI installers we work with and some housing associations that the phenolic solutions are needing to be ripped out and replaced. One of the installers is refusing to work with phenolic. Might be designed for the life of the building, doesn’t mean it’s turning out that way. I need to get more info on what the exact problem is, I’ll let you know what they say.Posted 5 years ago
Celotex is PIR,Kingspan is phenolic.PIR is cheaper than Phenolic.
Takiswawa,Gas pipe generally needs to be accesible so trunking,with a lid and vented.
Not a good idea to bury a gas pipe in insulation or render for obvious reasons…………..
Ideally if it is spaced off the wall,then ou can get insulation beihnd it otherwise it will act as a cold bridge.
Not much you can do about the conservatory other than work round it and accpet that,there will be an area of compromise.Posted 5 years agospooky_b329Member
At Openreach we’ve just had emails about external insulation. Apparently some stuff can’t take the weight of a ladder leaning against it, also installers have been going straight over phone cables run round the building, and where overhead dropwires are fixed, they are insulating/rendering over/around them so you can’t replace the dropwire…the wire just disappears into the render!
No secure fixing = no phone service until a solution is found. And from the sound of it, its down to the home owner to provide a secure fixing, Openreach don’t appear to have a solution at present…hard to fit an expanding eyebolt into insulation 🙁Posted 5 years ago
We often have fixing issues on large scale social housing refurbishment projects. The installer will often put a timber block recessed into the insulation to fix too,particularly for satellite dishes.
Alternative is fixing through the insulation with a sleeve and and then sealing with a mastic.
Very light fixings can be surface mounted but you should always check with the system supplier. We have some standard fixing details showing the various options.
Ladders are Ok if you avoid the point loads by resting it against a board. Good installers should provide this information to the client.It`s certainly freely available form the system manufacturers.Posted 5 years agoslowoldgitMember
There was a posting on timber cladding over insulation recently…Posted 5 years ago
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