Roof insulation beneath the roof covering.
If the roof has to come off anyway, that is the moment to insulate. The insulation sits beneath the roof covering, so doing it later means redoing the whole roof.
Four simple steps
Request a quoteMeasuring and inspecting
I come out, measure your roof and look at exactly what it needs.
A keen quote
You get a clear quote with no obligation. No surprises afterwards.
We build your roof
Once you agree, we schedule the work for a time that suits you.
Handed over watertight
The roof is handed over fully watertight, with a 10-year guarantee.
Is your roof coming off anyway?
Then this is the moment to insulate. Give me a call and I will work out what fits under the bitumen and what that means for the roof edges.
What this work includes
- PIR and EPS insulation on the roof deck
- Insulating during a roof renovation
- Replacing soaked insulation
- Raising roof edges and upstands
- Advice on thickness and insulation value
- Finished straight away with new bitumen
Roof insulation, and what you notice of it
Roof insulation
On a flat roof the insulation goes on top of the decking and under the bitumen: PIR boards, or EPS where that is enough. The roof becomes a few centimetres higher, so roof edges, upstands and outlets all have to be raised with it. That is part of the job and is stated in the quote.
The signs
When the roof covering is replaced, when a bedroom or extension under a flat roof is cold, and when the old insulation has become soaked. That last one happens more often than people think: a small leak will wet a whole board in a couple of years.
Why insulation and roofing belong together
On a flat roof the insulation sits on top of the decking and under the bitumen. There is no way at it without taking the covering off. Anyone who insulates later therefore has to have that same stripping out done a second time. So on every renovation I first look at what lies underneath and whether it is still dry. If insulation goes in or comes out, the roof rises a few centimetres and the roof edges, upstands and penetrations have to rise with it.
What people ask about this
On a flat roof that makes no sense: the insulation sits underneath, so the covering has to come off either way. That is why we combine the two.
A cold patch in the room below, or a roof that gives in one place. You only know for certain once the covering is off; then it is immediately visible.
That depends on what lies underneath and how much height there is to gain at the roof edge. I work it out and set the options side by side.
What kind of roof is it?
The most used board on a flat roof: a high insulation value at a limited thickness, which saves raising the edges.
Where thickness matters less, on a garage or an outbuilding for instance, EPS does the job perfectly well.
A small leak soaks a whole board within a few years. It no longer holds any heat back and has to come out.
The roof is coming off anyway. This is the one time the insulation can be replaced without extra stripping out.
The roof becomes a few centimetres higher. Edges, upstands and penetrations rise with it; that belongs to the job.
A cold kitchen or bedroom under a flat roof is nearly always a roof with no insulation or with saturated insulation.
Request a quote for roof insulation, no obligation.
Fill in the form or give me a call. I come out, measure it up and tell you what is needed. A 10-year guarantee on watertightness, and you are tied to nothing.
Roof renovation
Due for replacement? I measure up, assess it and tell you honestly whether a repair will still do.
Flat roofs and bitumen
New bituminous roofing on a house, extension, garage or commercial building.
Roof edges and fascia
Where nearly all wind damage begins: aluminium roof trim and new upstands.