Types of Duct Insulating Materials

Types of Duct Insulating Materials

1) Duct warp

Duct wrap insulation is probably the cheapest duct insulation out there. It is insulation on a roll that is very easy to work with. Duct wrap is typically made of fiberglass or mineral wool.

They are mostly used to insulate oval or circular ductwork but can also be used to insulate square and rectangular-shared ducts. Additionally, duct wrap has factory-applied foil-facing that not only reflects heat but also acts as a continuous vapour barrier. 

Duct wrap insulation is very easy to install. We have discussed the details of installing duct wrap insulation in detail, in our previous blog.

2) Fiberglass Duct warp Insulation: 

Duct Insulation by Isover from Saint Gobain is probably the cheapest ducting insulation and costs around £5-£6 per square meter. Made with top-quality glass mineral wool, this ducting insulation gives top-of-the-class thermal insulation, soundproofing, fire and vapour resistance.

3) Mineral Wool Duct wrap Insulation:

At Buy Insulation Online, we stock mineral wool duct insulation by Rockwool. Rockwool duct wrap insulation is made with superior-quality mineral wool. This duct wrap insulation is supplied as a meter-wide insulation roll and costs around £6-£7 per square meter

4) Nitrile Rubber Insulation:

Ducts can also be insulated using foamed nitrile rubber insulation. Nitrile rubber insulation is flexible, easy to install and highly resistant to corrosion. This feature makes the rubber foam insulation sheet ideal for insulating all types of ductwork, especially the metal duct range. Additionally, rubber insulation is ideal for insulating cold water ductwork. 

5) Duct Boards:

These are rigid insulation duct insulation boards made of phenolic foam, polyiso (PIR) or mineral wool. Duct insulation boards are mainly used to insulate rectangular and square-shaped ducts.

6) Mineral wool Duct boards:

As the name suggests, these duct boards are made of mineral wool. Duct boards give superior thermal insulation at a reduced thickness. At Buy Insulation Online, we stock the following duct insulation boards:

Rockwool duct insulation board is about 1m long and 600mm wide. They give superior thermal insulation to heating and ventilation ductwork and cost about £8-£9 per square meter. They have factory-applied foil facings that not only reflect radiant heat but also give superior resistance against water ingress.

We also stock specialist insulation boards like Rockwool FirePro DuctRock that can be used in applications that require superior fire resistance. This Rockwool Insulation gives up to 2 hours of fire protection.

Another specialist duct board we stock would be Rockwool DuoDuct board. These are used to insulate external ductwork carrying warm or chilled air or dual-purpose

7) Thermal duct

Thermal ductis basically PIR insulation for ductwork. With an unmatched and low thermal thermal conductivity of 0.023 W/mK, Therma duct insulation ensures that the heat stays inside the ducts. It means that your heated or conditioned air remains at the temperature you want them to be, as PIR insulation strictly prevents heat loss. Therma duct insulation costs around £11-£12 per square meter

8) Phenolic Foam Insulation:

Phenolic foam insulation gives exceptional insulation. With similar thermal conductivity as Therma duct boards, phenolic foam insulation boards are ideal for use in all types of ductwork.