###Available products
Available products
Aerogels in composites are typically two to four times more thermally insulating than the next-best alternative.
And since the recent expiry of some aerogel patents, the number of suppliers of these products has started to increase. The Space Loft and Thermal Wrap products at the site linked in the question are indeed aimed at the residential market, as well as the industrial.
The RockWool company now offer Aerowolle, a hybrid of aerogels and rockwool, as well as aerorock id-vpk - internal wall insulation (IWI) which combines aerogel with a plasterboard.
In Britain, the ThermaBlok range includes self-adhesive aerogel strips for fitting on studs and joists, to prevent thermal bridging; wall boards, ceiling boards, floor boards, and an insulating blanket..
You can also get aerogel-composite tiles, for retrofitting insulation on the reveals around windows: one of many cases where very narrow spaces require a material with particularly high thermal-insulation characteristics.
And there are aerogel particles, which can be blended into paints and plasters, for a wide range of applications: suppliers include Sto (StoTherm In Aevero), Fixit (222), Tnemec (Aerolon), Birdair (Tensotherm), Wasco (Lumira aerogel Skylights) and TGP (Profilit channel glass system)
###Costs
Costs
Given planning-permission constraints (e.g. in Britain), and given the high unit cost of land in many cities, aerogels and other super-insulators have a key role to play: internal space is at a premium, so the space-saving offered by super-insulators can be very valuable. That high pressure on the demand-side, together with an industry that was until recently constrained by patents, means that aerogel composites are (as of early 2014) more expensive, per unit of heating energy saved, than materials such as PIR. When you take into account the economic value of lost space, aerogel products are often cheaper.
###Suitability
Suitability
Wherever space is a constraint, and you've got the budget, aerogel products offer some interesting opportunities. The supply chain is best-developed in and around Germany at present, but is growing elsewhere. Like fibreglass, it can in some forms be dusty and unpleasant to work with: see the material data sheets and take appropriate safety precautions when installing.