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We are thinking of rendering our house but just wondered whether putting external insulation and then timber cladding on top was a suitable alternative. Any ideas how the costs compare? I may save heating costs but the house already has cavity wall insulation. The walls are pebbledashed, could the cladding go straight on top or would the pebbledash need removing?
Just go and look at houses that had wood cladding done more than 5yrs ago, most look a bit rubbish
What I found when I did our extension was.
The timber and fixings was more expensive and the time taken to fit it was longer.
End result it was about double the cost to have timber ( cedar)
Worth it in my mind not to have yet more concrete though which although functional looks naff from the off.
I’m not sure I’d choose to go down the external insulation route. If you’ve already got cavity wall insulation the benefit you feel will be minimal and then you’ve got the issue of actually fixing the cladding over the insulation.
If the Roughcast is sound you should be able to fix timber straps on top and fix the cladding back to these.
Budget anything from £50/m2 to £150/m2 for supply.
Don’t underestimate the joiners time required to fit.
Assuming it's a retrofit that you're considering, externally insulating can be complicated by detailing. Most obviously around the eaves/roofline you might find the need to make adjustments. These can make relatively straightforward installations more complex/expensive. So although given the poor state of much of the UK building stock it's generally a positive in environmental terms, the hassle and expense can put people off as the payback times are generally beyond what they will consider acceptable. IF you're planning a new build, or your existing facade openings/roof detailings make it straightforward then there is potential for fewer complications.
externally insulating can be complicated by detailing. Most obviously around the eaves/roofline
And every door and window!
And every door and window!
Yep, but that's relatively straightforward in most cases. Sorting the roof junction properly tends to be a little more intrusive.
OK thanks all, probably go for the render and external insulation / cladding on the upstairs bay window which is effectively a stud wall. Will also break up the amount of plain render on display.
I have looked at a few locally and new they look really good, but as said above after a few years they start looking a bit rubbish. 1 in particular had uneven weathering probably due to sun and rain exposure, it really looked bad. It was for sale too, so no doubt the vendor agreed.
