Loft Insulation Glenrothes

Glenrothes housing

A town built twice

Glenrothes was designated in 1948 to house miners for the Rothes Colliery. The pit flooded, closed in 1961, and the town was left with housing built for an industry that never arrived. It was then rebuilt around electronics, and grew again through the 1960s and 1970s.

That history is still in the streets, and it is the most useful thing to know before insulating a loft here. The decade a house went up tells you more about what is above the ceiling than the style of the house does.

The first wave, roughly 1950 to 1960

Woodside, Auchmuty and the earliest parts of the town. An energy efficient home was not a design consideration in 1952. Built quickly, to the standards of the day, which meant little or no insulation at all when new. Most have had something added since, often under a council programme, but rarely to anything like the depth now recommended. These lofts usually hold a thin, settled layer sitting level with the joists. Topping them up to full depth is among the cheapest ways to improve energy efficiency in the town, and it significantly reduces what the house costs to heat.

The second wave, roughly 1960 to 1980

Macedonia, Caskieberran, Pitteuchar, Cadham and Collydean. Bigger, and built when insulation had started to be taken seriously, though the standard of the time was still far below 270mm. Some of this stock is non-traditional construction, and a proportion has shallow roof pitches or unusual truss arrangements that make the eaves tight to work in. It is entirely insulatable, but it is worth someone looking before a price is given, because thermal performance depends on how well the material reaches the eaves rather than on how much goes in.

The older villages

Leslie, Markinch, Thornton and Kinglassie predate the new town by centuries. Stone properties, more varied roof spaces, and a much higher chance the loft has never been touched. These are the biggest single improvements available around Glenrothes, and the energy savings are correspondingly larger.

The work

How we insulate a loft, and to what depth

Loft insulation slows heat escaping through the roof and keeps it in the living space below. Around a quarter of the heat loss from an uninsulated house goes upwards, which is why insulating your loft is the primary insulation measure for most homes and the one that pays back fastest. Proper insulation means lower energy bills, steadier indoor temperatures and a better energy performance certificate, and unlike most home improvements the cost of insulation work is recovered within a few years of reduced heating bills.

The recommended depth in Scotland is 270mm of mineral wool. That is guidance for an existing home, not a legal requirement, and 270mm is not a legal minimum that anyone can enforce on you. Because ceiling joists in older Ayr properties are often only 100mm deep, reaching that depth means one layer between the joists and a second laid across them.

Where the space is a room in the roof rather than an open loft, depth is not the measure that matters. The sloped sections have a fixed cavity between the plasterboard and the sarking, so the job becomes about achieving a sensible U-value within the space available while leaving a ventilation gap above the insulation. That is a different specification, and a different price.

Choosing a type of insulation is less complicated than the marketing suggests. The real question is whether the insulation materials need to be natural or synthetic, and how much depth the loft space allows. There is no single best insulation type for every house, and the insulation solutions that suit a coastal bungalow are not the ones that suit a room in the roof, which is why we look first and recommend second.

• Mineral wool insulation: the standard specification, and the best value insulation product for most lofts.
• Sheep wool and hemp: sustainable insulation in natural fibre that handles moisture well, which counts for a lot on a wet, exposed coast.
• Multifoil: a slim reflective quilt where depth is restricted or at rafter level.
• Rigid PIR insulation boards: the usual choice for room in roof insulation, at the slope and the dwarf walls.

We do not install spray foam insulation. Applied to the roof slope it traps moisture against the timbers, prevents inspection, and has caused serious problems for homeowners selling or remortgaging.

It is worth being clear about scope. Loft and roof insulation is all we do. We do not offer cavity wall insulation, external wall insulation, internal wall insulation or underfloor insulation, and we are not a general home insulation contractor. If your house needs one of those measures, you want a firm that fits them every week rather than one adding it on. Plenty of insulation companies in Ayrshire cover the full range, and there is no shortage of choice.

Should old loft insulation be removed?

Usually not. Dry, clean, evenly laid insulation can be topped up, which is cheaper and works just as well. Removal is justified where material has been soaked through a leak, contaminated, or degraded to the point of doing nothing. It is worth being direct about this: removal is the most commonly upsold item in loft work, and it adds several hundred pounds. Ask why it is being proposed, and expect a specific answer about your loft rather than a general one. Our guide to removing old loft insulation goes into it properly.

Is loft insulation a DIY project?

An open bungalow loft, yes. If the space is accessible and safe to move around in, laying wool is not difficult and the materials are inexpensive. What a professional insulation specialist brings is expertise rather than muscle: spotting blocked eaves, cables buried under the existing layer, downlights that must not be covered, or damp that needs dealing with before anything goes on top.

A room in the roof is not a DIY job. It involves opening up finished surfaces, and getting the ventilation wrong in a sloped ceiling causes condensation inside the structure where you cannot see it.

Can I still use the loft for storage?

Yes, with a raised loft storage system that holds the deck above the full insulation depth. Loft boarding screwed straight to the joists crushes the layer beneath and wastes most of what you paid for, which is the most common way good insulation is made ineffective. In a bungalow, where the loft space is usually the only spare storage in the house, this is worth getting right rather than discovering later.

How long does it last?

Mineral wool does not wear out, but it settles and compresses, particularly where people have walked on it. A layer laid in the 1980s is usually performing well below its original figure. That is why we measure rather than take the previous installer's word for it.

The work

What we are actually looking at

Most lofts fall into one of these. The survey is about working out which, and what it needs.

Choosing insulation installers in Glenrothes

Professional installation earns its money on the detailing rather than the laying. Five things worth asking anyone quoting in Glenrothes, ourselves included:

• Find out which decade your house belongs to. A 1950s loft and a 1970s loft need different things, and an installer who has not asked has not looked.
• Get the existing depth in millimetres, measured rather than estimated from the hatch.
• On the shallower new town roofs, ask specifically how they will reach the eaves without packing them solid.
• Speak to Cosy Kingdom before you commit. If funding covers you, it costs you nothing to find out.
• Get the price and guarantee in writing before any deposit changes hands.

We work across Fife most weeks, covering Kirkcaldy and Dunfermline as well as Glenrothes. Every job starts with someone going up through the hatch and coming back down with a number. That number, not the house type, is what the written quote is built on. Fully insured, trading since 2016, and the peace of mind people are really paying for is that the team that quoted is the team that turns up.

Frequently asked questions